Restore standard sitetitle

So that they are at the top of the recent tab

core/modules/filterrunprefixes/cascade.js

@@ -25,20 +25,10 @@ exports.cascade = function(operationSubFunction,options) {
 					if(!filterFnList[index]) {
 						filterFnList[index] = options.wiki.compileFilter(filter);
 					}
-					var output = filterFnList[index](options.wiki.makeTiddlerIterator([title]),{
-						getVariable: function(name,opts) {
-							opts = opts || {};
-							opts.variables = {
-								"currentTiddler": "" + title,
-								"..currentTiddler": widget.getVariable("currentTiddler")
-							};
-							if(name in opts.variables) {
-								return opts.variables[name];
-							} else {
-								return widget.getVariable(name,opts);
-							}
-						}
-					});
+					var output = filterFnList[index](options.wiki.makeTiddlerIterator([title]),widget.makeFakeWidgetWithVariables({
+						"currentTiddler": "" + title,
+						"..currentTiddler": widget.getVariable("currentTiddler","")
+					}));
 					if(output.length !== 0) {
 						result = output[0];
 						return false;

core/modules/filterrunprefixes/filter.js

@@ -19,23 +19,13 @@ exports.filter = function(operationSubFunction,options) {
 			var resultsToRemove = [],
 				index = 0;
 			results.each(function(title) {
-				var filtered = operationSubFunction(options.wiki.makeTiddlerIterator([title]),{
-					getVariable: function(name,opts) {
-						opts = opts || {};
-						opts.variables = {
-							"currentTiddler": "" + title,
-							"..currentTiddler": widget.getVariable("currentTiddler"),
-							"index": "" + index,
-							"revIndex": "" +  (results.length - 1 - index),
-							"length": "" + results.length
-						};
-						if(name in opts.variables) {
-							return opts.variables[name];
-						} else {
-							return widget.getVariable(name,opts);
-						}
-					}
-				});
+				var filtered = operationSubFunction(options.wiki.makeTiddlerIterator([title]),widget.makeFakeWidgetWithVariables({
+					"currentTiddler": "" + title,
+					"..currentTiddler": widget.getVariable("currentTiddler",""),
+					"index": "" + index,
+					"revIndex": "" +  (results.length - 1 - index),
+					"length": "" + results.length
+				}));
 				if(filtered.length === 0) {
 					resultsToRemove.push(title);
 				}

core/modules/filterrunprefixes/map.js

@@ -21,23 +21,13 @@ exports.map = function(operationSubFunction,options) {
 				flatten = (suffixes[0] && suffixes[0][0] === "flat") ? true : false;
 			results.clear();
 			$tw.utils.each(inputTitles,function(title) {
-				var filtered = operationSubFunction(options.wiki.makeTiddlerIterator([title]),{
-					getVariable: function(name,opts) {
-						opts = opts || {};
-						opts.variables = {
-							"currentTiddler": "" + title,
-							"..currentTiddler": widget.getVariable("currentTiddler"),
-							"index": "" + index,
-							"revIndex": "" +  (inputTitles.length - 1 - index),
-							"length": "" + inputTitles.length
-						};
-						if(name in opts.variables) {
-							return opts.variables[name];
-						} else {
-							return widget.getVariable(name,opts);
-						}
-					}
-				});
+				var filtered = operationSubFunction(options.wiki.makeTiddlerIterator([title]),widget.makeFakeWidgetWithVariables({
+					"currentTiddler": "" + title,
+					"..currentTiddler": widget.getVariable("currentTiddler",""),
+					"index": "" + index,
+					"revIndex": "" +  (inputTitles.length - 1 - index),
+					"length": "" + inputTitles.length
+				}));
 				if(filtered.length && flatten) {
 					$tw.utils.each(filtered,function(value) {
 						results.push(value);

core/modules/filterrunprefixes/reduce.js

@@ -18,24 +18,14 @@ exports.reduce = function(operationSubFunction,options) {
 			var accumulator = "",
 				index = 0;
 			results.each(function(title) {
-				var list = operationSubFunction(options.wiki.makeTiddlerIterator([title]),{
-					getVariable: function(name,opts) {
-						opts = opts || {};
-						opts.variables = {
-							"currentTiddler": "" + title,
-							"..currentTiddler": widget.getVariable("currentTiddler"),
-							"index": "" + index,
-							"revIndex": "" +  (results.length - 1 - index),
-							"length": "" + results.length,
-							"accumulator": "" + accumulator
-						};
-						if(name in opts.variables) {
-							return opts.variables[name];
-						} else {
-							return widget.getVariable(name,opts);
-						}
-					}
-				});
+				var list = operationSubFunction(options.wiki.makeTiddlerIterator([title]),widget.makeFakeWidgetWithVariables({
+					"currentTiddler": "" + title,
+					"..currentTiddler": widget.getVariable("currentTiddler"),
+					"index": "" + index,
+					"revIndex": "" +  (results.length - 1 - index),
+					"length": "" + results.length,
+					"accumulator": "" + accumulator
+				}));
 				if(list.length > 0) {
 					accumulator = "" + list[0];
 				}

core/modules/filterrunprefixes/sort.js

@@ -25,20 +25,10 @@ exports.sort = function(operationSubFunction,options) {
 				indexes = new Array(inputTitles.length),
 				compareFn;
 			results.each(function(title) {
-				var key = operationSubFunction(options.wiki.makeTiddlerIterator([title]),{
-					getVariable: function(name,opts) {
-						opts = opts || {};
-						opts.variables = {
-							"currentTiddler": "" + title,
-							"..currentTiddler": widget.getVariable("currentTiddler")
-						};
-						if(name in opts.variables) {
-							return opts.variables[name];
-						} else {
-							return widget.getVariable(name,opts);
-						}
-					}
-				});
+				var key = operationSubFunction(options.wiki.makeTiddlerIterator([title]),widget.makeFakeWidgetWithVariables({
+					"currentTiddler": "" + title,
+					"..currentTiddler": widget.getVariable("currentTiddler")
+				}));
 				sortKeys.push(key[0] || "");
 			});
 			results.clear();

core/modules/filters.js

@@ -255,19 +255,21 @@ exports.compileFilter = function(filterString) {
 				var operands = [],
 					operatorFunction;
 				if(!operator.operator) {
+					// Use the "title" operator if no operator is specified
 					operatorFunction = filterOperators.title;
 				} else if(!filterOperators[operator.operator]) {
-					operatorFunction = filterOperators.field;
+					// Unknown operators treated as "[unknown]" - at run time we can distinguish between a custom operator and falling back to the default "field" operator
+					operatorFunction = filterOperators["[unknown]"];
 				} else {
+					// Use the operator function
 					operatorFunction = filterOperators[operator.operator];
 				}
-
 				$tw.utils.each(operator.operands,function(operand) {
 					if(operand.indirect) {
 						operand.value = self.getTextReference(operand.text,"",currTiddlerTitle);
 					} else if(operand.variable) {
 						var varTree = $tw.utils.parseFilterVariable(operand.text);
-						operand.value = widget.getVariable(varTree.name,{params:varTree.params,defaultValue: ""});
+						operand.value = widget.evaluateVariable(varTree.name,{params: varTree.params, source: source})[0] || "";
 					} else {
 						operand.value = operand.text;
 					}

core/modules/filters/filter.js

@@ -20,19 +20,10 @@ exports.filter = function(source,operator,options) {
 		results = [],
 		target = operator.prefix !== "!";
 	source(function(tiddler,title) {
-		var list = filterFn.call(options.wiki,options.wiki.makeTiddlerIterator([title]),{
-				getVariable: function(name,opts) {
-					opts = opts || {};
-					switch(name) {
-						case "currentTiddler":
-							return "" + title;
-						case "..currentTiddler":
-							return options.widget.getVariable("currentTiddler");
-						default:
-							return options.widget.getVariable(name,opts);
-					}
-				}
-			});
+		var list = filterFn.call(options.wiki,options.wiki.makeTiddlerIterator([title]),options.widget.makeFakeWidgetWithVariables({
+			"currentTiddler": "" + title,
+			"..currentTiddler": options.widget.getVariable("currentTiddler","")
+		}));
 		if((list.length > 0) === target) {
 			results.push(title);
 		}

core/modules/filters/function.js

@@ -0,0 +1,32 @@
+/*\
+title: $:/core/modules/filters/function.js
+type: application/javascript
+module-type: filteroperator
+
+Filter operator returning those input titles that are returned from a function
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Export our filter function
+*/
+exports.function = function(source,operator,options) {
+	var functionName = operator.operands[0],
+		variableInfo = options.widget && options.widget.getVariableInfo && options.widget.getVariableInfo(functionName);
+	if(variableInfo && variableInfo.srcVariable && variableInfo.srcVariable.isFunctionDefinition) {
+		return options.widget.evaluateVariable(functionName,{params: operator.operands.slice(1), source: source});
+	}
+	// Return the input list if the function wasn't found
+	var results = [];
+	source(function(tiddler,title) {
+		results.push(title);
+	});
+	return results;
+};
+
+})();

core/modules/filters/reduce.js

@@ -26,27 +26,14 @@ exports.reduce = function(source,operator,options) {
 		accumulator = operator.operands[1] || "";
 	for(var index=0; index<results.length; index++) {
 		var title = results[index],
-			list = filterFn.call(options.wiki,options.wiki.makeTiddlerIterator([title]),{
-				getVariable: function(name,opts) {
-					opts = opts || {};
-					switch(name) {
-						case "currentTiddler":
-							return "" + title;
-						case "..currentTiddler":
-							return options.widget.getVariable("currentTiddler");
-						case "accumulator":
-							return "" + accumulator;
-						case "index":
-							return "" + index;
-						case "revIndex":
-							return "" + (results.length - 1 - index);
-						case "length":
-							return "" + results.length;
-						default:
-							return options.widget.getVariable(name,opts);
-					}
-				}
-			});
+			list = filterFn.call(options.wiki,options.wiki.makeTiddlerIterator([title]),options.widget.makeFakeWidgetWithVariables({
+				"currentTiddler": "" + title,
+				"..currentTiddler": options.widget.getVariable("currentTiddler"),
+				"accumulator": "" + accumulator,
+				"index": "" + index,
+				"revIndex": "" + (results.length - 1 - index),
+				"length": "" + results.length
+			}));
 		if(list.length > 0) {
 			accumulator = "" +  list[0];
 		}

core/modules/filters/sortsub.js

@@ -25,19 +25,10 @@ exports.sortsub = function(source,operator,options) {
 		inputTitles.push(title);
 		var r = filterFn.call(options.wiki,function(iterator) {
 			iterator(options.wiki.getTiddler(title),title);
-		},{
-			getVariable: function(name,opts) {
-				opts = opts || {};
-				switch(name) {
-					case "currentTiddler":
-						return "" + title;
-					case "..currentTiddler":
-						return options.widget.getVariable("currentTiddler");
-					default:
-						return options.widget.getVariable(name,opts);
-				}
-			}
-		});
+		},options.widget.makeFakeWidgetWithVariables({
+			"currentTiddler": "" + title,
+			"..currentTiddler": options.widget.getVariable("currentTiddler")
+		}));
 		sortKeys.push(r[0] || "");
 	});
 	// Rather than sorting the titles array, we'll sort the indexes so that we can consult both arrays

core/modules/filters/unknown.js

@@ -0,0 +1,45 @@
+/*\
+title: $:/core/modules/filters/unknown.js
+type: application/javascript
+module-type: filteroperator
+
+Filter operator for handling unknown filter operators.
+
+Not intended to be used directly by end users, hence the square brackets around the name.
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var fieldFilterOperatorFn = require("$:/core/modules/filters/field.js").field;
+
+/*
+Export our filter function
+*/
+exports["[unknown]"] = function(source,operator,options) {
+	// Check for a user defined filter operator
+	if(operator.operator.charAt(0) === ".") {
+		var variableInfo = options.widget && options.widget.getVariableInfo && options.widget.getVariableInfo(operator.operator);
+		if(variableInfo && variableInfo.srcVariable && variableInfo.srcVariable.isFunctionDefinition) {
+			var list = options.widget.evaluateVariable(operator.operator,{params: operator.operands, source: source});
+			if(operator.prefix === "!") {
+				var results = [];
+				source(function(tiddler,title) {
+					if(list.indexOf(title) === -1) {
+						results.push(title);
+					}
+				});
+				return results;
+			} else {
+				return list;
+			}
+		}
+	}
+	// Otherwise, use the "field" operator
+	return fieldFilterOperatorFn(source,operator,options);
+};
+
+})();

core/modules/parsers/audioparser.js

@@ -28,6 +28,8 @@ var AudioParser = function(type,text,options) {
 		element.attributes.src = {type: "string", value: "data:" + type + ";base64," + text};
 	}
 	this.tree = [element];
+	this.source = text;
+	this.type = type;
 };
 
 exports["audio/ogg"] = AudioParser;

core/modules/parsers/binaryparser.js

@@ -23,7 +23,7 @@ var BinaryParser = function(type,text,options) {
 		children: [{
 			type: "transclude",
 			attributes: {
-				tiddler: {type: "string", value: BINARY_WARNING_MESSAGE}
+				"$tiddler": {type: "string", value: BINARY_WARNING_MESSAGE}
 			}
 		}]
 	};
@@ -38,7 +38,7 @@ var BinaryParser = function(type,text,options) {
 		children: [{
 			type: "transclude",
 			attributes: {
-				tiddler: {type: "string", value: EXPORT_BUTTON_IMAGE}
+				"$tiddler": {type: "string", value: EXPORT_BUTTON_IMAGE}
 			}
 		}]
 	};
@@ -64,6 +64,8 @@ var BinaryParser = function(type,text,options) {
 		children: [warn, link]
 	}
 	this.tree = [element];
+	this.source = text;
+	this.type = type;
 };
 
 exports["application/octet-stream"] = BinaryParser;

core/modules/parsers/csvparser.js

@@ -52,6 +52,8 @@ var CsvParser = function(type,text,options) {
 		tag = "td";
 		this.tree[0].children[0].children[0].children.push(row);
 	}
+	this.source = text;
+	this.type = type;
 };
 
 exports["text/csv"] = CsvParser;

core/modules/parsers/htmlparser.js

@@ -29,6 +29,8 @@ var HtmlParser = function(type,text,options) {
 	if($tw.wiki.getTiddlerText("$:/config/HtmlParser/DisableSandbox","no") !== "yes") {
 		this.tree[0].attributes.sandbox = {type: "string", value: $tw.wiki.getTiddlerText("$:/config/HtmlParser/SandboxTokens","")};
 	}
+	this.source = text;
+	this.type = type;
 };
 
 exports["text/html"] = HtmlParser;

core/modules/parsers/imageparser.js

@@ -28,6 +28,8 @@ var ImageParser = function(type,text,options) {
 		}
 	}
 	this.tree = [element];
+	this.source = text;
+	this.type = type;
 };
 
 exports["image/svg+xml"] = ImageParser;

core/modules/parsers/parseutils.js

@@ -123,6 +123,36 @@ exports.parseStringLiteral = function(source,pos) {
 	}
 };
 
+/*
+Returns an array of {name:} with an optional "default" property. Options include:
+requireParenthesis: require the parameter definition to be wrapped in parenthesis
+*/
+exports.parseParameterDefinition = function(paramString,options) {
+	options = options || {};
+	if(options.requireParenthesis) {
+		var parenMatch = /^\s*\((.*)\)\s*$/g.exec(paramString);
+		if(!parenMatch) {
+			return [];
+		}
+		paramString = parenMatch[1];
+	}
+	var params = [],
+		reParam = /\s*([^:),\s]+)(?:\s*:\s*(?:"""([\s\S]*?)"""|"([^"]*)"|'([^']*)'|([^,"'\s]+)))?/mg,
+		paramMatch = reParam.exec(paramString);
+	while(paramMatch) {
+		// Save the parameter details
+		var paramInfo = {name: paramMatch[1]},
+			defaultValue = paramMatch[2] || paramMatch[3] || paramMatch[4] || paramMatch[5];
+		if(defaultValue !== undefined) {
+			paramInfo["default"] = defaultValue;
+		}
+		params.push(paramInfo);
+		// Look for the next parameter
+		paramMatch = reParam.exec(paramString);
+	}
+	return params;
+};
+
 exports.parseMacroParameters = function(node,source,pos) {
 	// Process parameters
 	var parameter = $tw.utils.parseMacroParameter(source,pos);
@@ -175,7 +205,36 @@ exports.parseMacroParameter = function(source,pos) {
 };
 
 /*
-Look for a macro invocation. Returns null if not found, or {type: "macrocall", name:, parameters:, start:, end:}
+Look for a macro invocation. Returns null if not found, or {type: "transclude", attributes:, start:, end:}
+*/
+exports.parseMacroInvocationAsTransclusion = function(source,pos) {
+	var node = $tw.utils.parseMacroInvocation(source,pos);
+	if(node) {
+		var positionalName = 0,
+			transclusion = {
+				type: "transclude",
+				start: node.start,
+				end: node.end
+			};
+		$tw.utils.addAttributeToParseTreeNode(transclusion,"$variable",node.name);
+		$tw.utils.each(node.params,function(param) {
+			var name = param.name;
+			if(name) {
+				if(name.charAt(0) === "$") {
+					name = "$" + name;
+				}
+				$tw.utils.addAttributeToParseTreeNode(transclusion,{name: name,type: "string", value: param.value, start: param.start, end: param.end});
+			} else {
+				$tw.utils.addAttributeToParseTreeNode(transclusion,{name: (positionalName++) + "",type: "string", value: param.value, start: param.start, end: param.end});
+			}
+		});
+		return transclusion;
+	}
+	return node;
+};
+
+/*
+Look for a macro invocation. Returns null if not found, or {type: "macrocall", name:, params:, start:, end:}
 */
 exports.parseMacroInvocation = function(source,pos) {
 	var node = {

core/modules/parsers/pdfparser.js

@@ -25,6 +25,8 @@ var ImageParser = function(type,text,options) {
 		element.attributes.src = {type: "string", value: "data:application/pdf;base64," + text};
 	}
 	this.tree = [element];
+	this.source = text;
+	this.type = type;
 };
 
 exports["application/pdf"] = ImageParser;

core/modules/parsers/textparser.js

@@ -20,6 +20,8 @@ var TextParser = function(type,text,options) {
 			language: {type: "string", value: type}
 		}
 	}];
+	this.source = text;
+	this.type = type;
 };
 
 exports["text/plain"] = TextParser;

core/modules/parsers/videoparser.js

@@ -28,6 +28,8 @@ var VideoParser = function(type,text,options) {
 		element.attributes.src = {type: "string", value: "data:" + type + ";base64," + text};
 	}
 	this.tree = [element];
+	this.source = text;
+	this.type = type;
 };
 
 exports["video/ogg"] = VideoParser;

core/modules/parsers/wikiparser/rules/fnprocdef.js

@@ -0,0 +1,97 @@
+/*\
+title: $:/core/modules/parsers/wikiparser/rules/fnprocdef.js
+type: application/javascript
+module-type: wikirule
+
+Wiki pragma rule for function, procedure and widget definitions
+
+```
+\function name(param:defaultvalue,param2:defaultvalue)
+definition text
+\end
+
+\procedure name(param:defaultvalue,param2:defaultvalue)
+definition text
+\end
+
+\widget $mywidget(param:defaultvalue,param2:defaultvalue)
+definition text
+\end
+```
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+exports.name = "fnprocdef";
+exports.types = {pragma: true};
+
+/*
+Instantiate parse rule
+*/
+exports.init = function(parser) {
+	this.parser = parser;
+	// Regexp to match
+	this.matchRegExp = /^\\(function|procedure|widget)\s+([^(\s]+)\((\s*([^)]*))?\)(\s*\r?\n)?/mg;
+};
+
+/*
+Parse the most recent match
+*/
+exports.parse = function() {
+	// Move past the macro name and parameters
+	this.parser.pos = this.matchRegExp.lastIndex;
+	// Parse the parameters
+	var params = [];
+	if(this.match[3]) {
+		params = $tw.utils.parseParameterDefinition(this.match[4]);
+	}
+	// Is this a multiline definition?
+	var reEnd;
+	if(this.match[5]) {
+		// If so, the end of the body is marked with \end
+		reEnd = new RegExp("(\\r?\\n\\\\end[^\\S\\n\\r]*(?:" + $tw.utils.escapeRegExp(this.match[2]) + ")?(?:$|\\r?\\n))","mg");
+	} else {
+		// Otherwise, the end of the definition is marked by the end of the line
+		reEnd = /($|\r?\n)/mg;
+		// Move past any whitespace
+		this.parser.pos = $tw.utils.skipWhiteSpace(this.parser.source,this.parser.pos);
+	}
+	// Find the end of the definition
+	reEnd.lastIndex = this.parser.pos;
+	var text,
+		endMatch = reEnd.exec(this.parser.source);
+	if(endMatch) {
+		text = this.parser.source.substring(this.parser.pos,endMatch.index);
+		this.parser.pos = endMatch.index + endMatch[0].length;
+	} else {
+		// We didn't find the end of the definition, so we'll make it blank
+		text = "";
+	}
+	// Save the macro definition
+	var parseTreeNodes = [{
+		type: "set",
+		attributes: {},
+		children: [],
+		params: params
+	}];
+	$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"name",this.match[2]);
+	$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"value",text);
+	if(this.match[1] === "function") {
+		parseTreeNodes[0].isFunctionDefinition = true;
+	} else if(this.match[1] === "procedure") {
+		parseTreeNodes[0].isProcedureDefinition = true;
+	} else if(this.match[1] === "widget") {
+		parseTreeNodes[0].isWidgetDefinition = true;
+	}
+	if(this.parser.configTrimWhiteSpace) {
+		parseTreeNodes[0].configTrimWhiteSpace = true;
+	}
+	return parseTreeNodes;
+};
+
+})();
+	

core/modules/parsers/wikiparser/rules/html.js

@@ -93,9 +93,6 @@ exports.parseTag = function(source,pos,options) {
 		return null;
 	}
 	node.tag = token.match[1];
-	if(node.tag.slice(1).indexOf("$") !== -1) {
-		return null;
-	}
 	if(node.tag.charAt(0) === "$") {
 		node.type = node.tag.substr(1);
 	}

core/modules/parsers/wikiparser/rules/macrocallblock.js

@@ -27,7 +27,7 @@ exports.findNextMatch = function(startPos) {
 	var nextStart = startPos;
 	// Try parsing at all possible macrocall openers until we match
 	while((nextStart = this.parser.source.indexOf("<<",nextStart)) >= 0) {
-		var nextCall = $tw.utils.parseMacroInvocation(this.parser.source,nextStart);
+		var nextCall = $tw.utils.parseMacroInvocationAsTransclusion(this.parser.source,nextStart);
 		if(nextCall) {
 			var c = this.parser.source.charAt(nextCall.end);
 			// Ensure EOL after parsed macro

core/modules/parsers/wikiparser/rules/macrocallinline.js

@@ -27,7 +27,7 @@ exports.findNextMatch = function(startPos) {
 	var nextStart = startPos;
 	// Try parsing at all possible macrocall openers until we match
 	while((nextStart = this.parser.source.indexOf("<<",nextStart)) >= 0) {
-		this.nextCall = $tw.utils.parseMacroInvocation(this.parser.source,nextStart);
+		this.nextCall = $tw.utils.parseMacroInvocationAsTransclusion(this.parser.source,nextStart);
 		if(this.nextCall) {
 			return nextStart;
 		}

core/modules/parsers/wikiparser/rules/macrodef.js

@@ -77,16 +77,16 @@ exports.parse = function() {
 		text = "";
 	}
 	// Save the macro definition
-	return [{
+	var parseTreeNodes = [{
 		type: "set",
-		attributes: {
-			name: {type: "string", value: this.match[1]},
-			value: {type: "string", value: text}
-		},
+		attributes: {},
 		children: [],
 		params: params,
 		isMacroDefinition: true
 	}];
+	$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"name",this.match[1]);
+	$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"value",text);
+	return parseTreeNodes;
 };
 
 })();

core/modules/parsers/wikiparser/rules/parameters.js

@@ -0,0 +1,60 @@
+/*\
+title: $:/core/modules/parsers/wikiparser/rules/parameters.js
+type: application/javascript
+module-type: wikirule
+
+Wiki pragma rule for parameter definitions
+
+```
+\parameters(param:defaultvalue,param2:defaultvalue)
+definition text
+```
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+exports.name = "parameters";
+exports.types = {pragma: true};
+
+/*
+Instantiate parse rule
+*/
+exports.init = function(parser) {
+	this.parser = parser;
+	// Regexp to match
+	this.matchRegExp = /^\\parameters\s*\(([^)]*)\)\s*\r?\n/mg;
+};
+
+/*
+Parse the most recent match
+*/
+exports.parse = function() {
+	// Move past the macro name and parameters
+	this.parser.pos = this.matchRegExp.lastIndex;
+	// Parse the parameters
+	var params = $tw.utils.parseParameterDefinition(this.match[1]);
+	var attributes = Object.create(null),
+		orderedAttributes = [];
+	$tw.utils.each(params,function(param) {
+		var name = param.name;
+		// Parameter names starting with dollar must be escaped to double dollars for the parameters widget
+		if(name.charAt(0) === "$") {
+			name = "$" + name;
+		}
+		var attribute = {name: name, type: "string", value: param["default"] || ""};
+		attributes[name] = attribute;
+		orderedAttributes.push(attribute);
+	});
+	// Save the macro definition
+	return [{
+		type: "parameters",
+		attributes: attributes,
+		orderedAttributes: orderedAttributes
+	}];
+};
+
+})();

core/modules/parsers/wikiparser/rules/transcludeblock.js

@@ -23,7 +23,7 @@ exports.types = {block: true};
 exports.init = function(parser) {
 	this.parser = parser;
 	// Regexp to match
-	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?\}\}(?:\r?\n|$)/mg;
+	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?(?:\|([^\{\}]+))?\}\}(?:\r?\n|$)/mg;
 };
 
 exports.parse = function() {
@@ -31,13 +31,22 @@ exports.parse = function() {
 	this.parser.pos = this.matchRegExp.lastIndex;
 	// Get the match details
 	var template = $tw.utils.trim(this.match[2]),
-		textRef = $tw.utils.trim(this.match[1]);
+		textRef = $tw.utils.trim(this.match[1]),
+		params = this.match[3] ? this.match[3].split("|") : [];
 	// Prepare the transclude widget
 	var transcludeNode = {
 			type: "transclude",
 			attributes: {},
 			isBlock: true
 		};
+	$tw.utils.each(params,function(paramValue,index) {
+		var name = "" + index;
+		transcludeNode.attributes[name] = {
+			name: name,
+			type: "string",
+			value: paramValue
+		}
+	});
 	// Prepare the tiddler widget
 	var tr, targetTitle, targetField, targetIndex, tiddlerNode;
 	if(textRef) {
@@ -48,14 +57,14 @@ exports.parse = function() {
 		tiddlerNode = {
 			type: "tiddler",
 			attributes: {
-				tiddler: {type: "string", value: targetTitle}
+				tiddler: {name: "tiddler", type: "string", value: targetTitle}
 			},
 			isBlock: true,
 			children: [transcludeNode]
 		};
 	}
 	if(template) {
-		transcludeNode.attributes.tiddler = {type: "string", value: template};
+		transcludeNode.attributes["$tiddler"] = {name: "$tiddler", type: "string", value: template};
 		if(textRef) {
 			return [tiddlerNode];
 		} else {
@@ -63,12 +72,12 @@ exports.parse = function() {
 		}
 	} else {
 		if(textRef) {
-			transcludeNode.attributes.tiddler = {type: "string", value: targetTitle};
+			transcludeNode.attributes["$tiddler"] = {name: "$tiddler", type: "string", value: targetTitle};
 			if(targetField) {
-				transcludeNode.attributes.field = {type: "string", value: targetField};
+				transcludeNode.attributes["$field"] = {name: "$field", type: "string", value: targetField};
 			}
 			if(targetIndex) {
-				transcludeNode.attributes.index = {type: "string", value: targetIndex};
+				transcludeNode.attributes["$index"] = {name: "$index", type: "string", value: targetIndex};
 			}
 			return [tiddlerNode];
 		} else {

core/modules/parsers/wikiparser/rules/transcludeinline.js

@@ -23,7 +23,7 @@ exports.types = {inline: true};
 exports.init = function(parser) {
 	this.parser = parser;
 	// Regexp to match
-	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?\}\}/mg;
+	this.matchRegExp = /\{\{([^\{\}\|]*)(?:\|\|([^\|\{\}]+))?(?:\|([^\{\}]+))?\}\}/mg;
 };
 
 exports.parse = function() {
@@ -31,12 +31,21 @@ exports.parse = function() {
 	this.parser.pos = this.matchRegExp.lastIndex;
 	// Get the match details
 	var template = $tw.utils.trim(this.match[2]),
-		textRef = $tw.utils.trim(this.match[1]);
+		textRef = $tw.utils.trim(this.match[1]),
+		params = this.match[3] ? this.match[3].split("|") : [];
 	// Prepare the transclude widget
 	var transcludeNode = {
 			type: "transclude",
 			attributes: {}
 		};
+	$tw.utils.each(params,function(paramValue,index) {
+		var name = "" + index;
+		transcludeNode.attributes[name] = {
+			name: name,
+			type: "string",
+			value: paramValue
+		}
+	});
 	// Prepare the tiddler widget
 	var tr, targetTitle, targetField, targetIndex, tiddlerNode;
 	if(textRef) {
@@ -47,13 +56,13 @@ exports.parse = function() {
 		tiddlerNode = {
 			type: "tiddler",
 			attributes: {
-				tiddler: {type: "string", value: targetTitle}
+				tiddler: {name: "tiddler", type: "string", value: targetTitle}
 			},
 			children: [transcludeNode]
 		};
 	}
 	if(template) {
-		transcludeNode.attributes.tiddler = {type: "string", value: template};
+		transcludeNode.attributes["$tiddler"] = {name: "$tiddler", type: "string", value: template};
 		if(textRef) {
 			return [tiddlerNode];
 		} else {
@@ -61,12 +70,12 @@ exports.parse = function() {
 		}
 	} else {
 		if(textRef) {
-			transcludeNode.attributes.tiddler = {type: "string", value: targetTitle};
+			transcludeNode.attributes["$tiddler"] = {name: "$tiddler", type: "string", value: targetTitle};
 			if(targetField) {
-				transcludeNode.attributes.field = {type: "string", value: targetField};
+				transcludeNode.attributes["$field"] = {name: "$field", type: "string", value: targetField};
 			}
 			if(targetIndex) {
-				transcludeNode.attributes.index = {type: "string", value: targetIndex};
+				transcludeNode.attributes["$index"] = {name: "$index", type: "string", value: targetIndex};
 			}
 			return [tiddlerNode];
 		} else {

core/modules/parsers/wikiparser/wikiparser.js

@@ -32,6 +32,7 @@ options: see below:
 	parseAsInline: true to parse text as inline instead of block
 	wiki: reference to wiki to use
 	_canonical_uri: optional URI of content if text is missing or empty
+	configTrimWhiteSpace: true to trim whitespace
 */
 var WikiParser = function(type,text,options) {
 	this.wiki = options.wiki;
@@ -46,7 +47,7 @@ var WikiParser = function(type,text,options) {
 	this.source = text || "";
 	this.sourceLength = this.source.length;
 	// Flag for ignoring whitespace
-	this.configTrimWhiteSpace = false;
+	this.configTrimWhiteSpace = options.configTrimWhiteSpace !== undefined ? options.configTrimWhiteSpace : false;
 	// Parser mode
 	this.parseAsInline = options.parseAsInline;
 	// Set current parse position

core/modules/widgets/fill.js

@@ -0,0 +1,30 @@
+/*\
+title: $:/core/modules/widgets/fill.js
+type: application/javascript
+module-type: widget
+
+Sub-widget used by the transclude widget for specifying values for slots within transcluded content. It doesn't do anything by itself because the transclude widget only ever deals with the parse tree nodes, and doesn't instantiate the widget itself
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var Widget = require("$:/core/modules/widgets/widget.js").widget;
+
+var FillWidget = function(parseTreeNode,options) {
+	// Initialise
+	this.initialise(parseTreeNode,options);
+};
+
+/*
+Inherit from the base widget class
+*/
+FillWidget.prototype = new Widget();
+
+exports.fill = FillWidget;
+
+})();
+	

core/modules/widgets/importvariables.js

@@ -52,38 +52,44 @@ ImportVariablesWidget.prototype.execute = function(tiddlerList) {
 		var parser = widgetPointer.wiki.parseTiddler(title,{parseAsInline:true});
 		if(parser) {
 			var parseTreeNode = parser.tree[0];
-			while(parseTreeNode && parseTreeNode.type === "set") {
+			while(parseTreeNode && ["setvariable","set","parameters"].indexOf(parseTreeNode.type) !== -1) {
 				var node = {
 					type: "set",
 					attributes: parseTreeNode.attributes,
 					params: parseTreeNode.params,
-					isMacroDefinition: parseTreeNode.isMacroDefinition
+					isMacroDefinition: parseTreeNode.isMacroDefinition,
+					isFunctionDefinition: parseTreeNode.isFunctionDefinition,
+					isProcedureDefinition: parseTreeNode.isProcedureDefinition,
+					isWidgetDefinition: parseTreeNode.isWidgetDefinition,
+					configTrimWhiteSpace: parseTreeNode.configTrimWhiteSpace
 				};
-				if (parseTreeNode.isMacroDefinition) {
-					// Macro definitions can be folded into
-					// current widget instead of adding
-					// another link to the chain.
-					var widget = widgetPointer.makeChildWidget(node);
-					widget.computeAttributes();
-					widget.execute();
-					// We SHALLOW copy over all variables
-					// in widget. We can't use
-					// $tw.utils.assign, because that copies
-					// up the prototype chain, which we
-					// don't want.
-					$tw.utils.each(Object.keys(widget.variables), function(key) {
-						widgetPointer.variables[key] = widget.variables[key];
-					});
-				} else {
-					widgetPointer.children = [widgetPointer.makeChildWidget(node)];
-					// No more regenerating children for
-					// this widget. If it needs to refresh,
-					// it'll do so along with the the whole
-					// importvariable tree.
-					if (widgetPointer != this) {
-						widgetPointer.makeChildWidgets = function(){};
+				if(parseTreeNode.type === "set" || parseTreeNode.type === "setvariable") {
+					if(parseTreeNode.isMacroDefinition || parseTreeNode.isProcedureDefinition || parseTreeNode.isWidgetDefinition || parseTreeNode.isFunctionDefinition) {
+						// Macro definitions can be folded into
+						// current widget instead of adding
+						// another link to the chain.
+						var widget = widgetPointer.makeChildWidget(node);
+						widget.computeAttributes();
+						widget.execute();
+						// We SHALLOW copy over all variables
+						// in widget. We can't use
+						// $tw.utils.assign, because that copies
+						// up the prototype chain, which we
+						// don't want.
+						$tw.utils.each(Object.keys(widget.variables), function(key) {
+							widgetPointer.variables[key] = widget.variables[key];
+						});
+					} else {
+						widgetPointer.children = [widgetPointer.makeChildWidget(node)];
+						// No more regenerating children for
+						// this widget. If it needs to refresh,
+						// it'll do so along with the the whole
+						// importvariable tree.
+						if (widgetPointer != this) {
+							widgetPointer.makeChildWidgets = function(){};
+						}
+						widgetPointer = widgetPointer.children[0];
 					}
-					widgetPointer = widgetPointer.children[0];
 				}
 				parseTreeNode = parseTreeNode.children && parseTreeNode.children[0];
 			}

core/modules/widgets/macrocall.js

@@ -37,7 +37,7 @@ MacroCallWidget.prototype.render = function(parent,nextSibling) {
 Compute the internal state of the widget
 */
 MacroCallWidget.prototype.execute = function() {
-	// Get the parse type if specified
+	this.macroName = this.parseTreeNode.name || this.getAttribute("$name"),
 	this.parseType = this.getAttribute("$type","text/vnd.tiddlywiki");
 	this.renderOutput = this.getAttribute("$output","text/html");
 	// Merge together the parameters specified in the parse tree with the specified attributes
@@ -47,49 +47,26 @@ MacroCallWidget.prototype.execute = function() {
 			params.push({name: name, value: attribute});
 		}
 	});
-	// Get the macro value
-	var macroName = this.parseTreeNode.name || this.getAttribute("$name"),
-		variableInfo = this.getVariableInfo(macroName,{params: params}),
-		text = variableInfo.text,
-		parseTreeNodes;
-	// Are we rendering to HTML?
-	if(this.renderOutput === "text/html") {
-		// If so we'll return the parsed macro
-		// Check if we've already cached parsing this macro
-		var mode = this.parseTreeNode.isBlock ? "blockParser" : "inlineParser",
-			parser;
-		if(variableInfo.srcVariable && variableInfo.srcVariable[mode]) {
-			parser = variableInfo.srcVariable[mode];
-		} else {
-			parser = this.wiki.parseText(this.parseType,text,
-								{parseAsInline: !this.parseTreeNode.isBlock});
-			if(variableInfo.isCacheable && variableInfo.srcVariable) {
-				variableInfo.srcVariable[mode] = parser;
-			}
-		}
-		var parseTreeNodes = parser ? parser.tree : [];
-		// Wrap the parse tree in a vars widget assigning the parameters to variables named "__paramname__"
-		var attributes = {};
-		$tw.utils.each(variableInfo.params,function(param) {
-			var name = "__" + param.name + "__";
-			attributes[name] = {
-				name: name,
-				type: "string",
-				value: param.value
-			};
-		});
+	// Make a transclude widget
+	var positionalName = 0,
 		parseTreeNodes = [{
-			type: "vars",
-			attributes: attributes,
-			children: parseTreeNodes
+			type: "transclude",
+			isBlock: this.parseTreeNode.isBlock
 		}];
-	} else if(this.renderOutput === "text/raw") {
-		parseTreeNodes = [{type: "text", text: text}];
-	} else {
-		// Otherwise, we'll render the text
-		var plainText = this.wiki.renderText("text/plain",this.parseType,text,{parentWidget: this});
-		parseTreeNodes = [{type: "text", text: plainText}];
-	}
+	$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"$variable",this.macroName);
+	$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"$type",this.parseType);
+	$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"$output",this.renderOutput);
+	$tw.utils.each(params,function(param) {
+		var name = param.name;
+		if(name) {
+			if(name.charAt(0) === "$") {
+				name = "$" + name;
+			}
+			$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],name,param.value);
+		} else {
+			$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],(positionalName++) + "",param.value);
+		}
+	});
 	// Construct the child widgets
 	this.makeChildWidgets(parseTreeNodes);
 };

core/modules/widgets/parameters.js

@@ -0,0 +1,96 @@
+/*\
+title: $:/core/modules/widgets/parameters.js
+type: application/javascript
+module-type: widget
+
+Widget for definition of transclusion parameters
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var Widget = require("$:/core/modules/widgets/widget.js").widget,
+	TranscludeWidget = require("$:/core/modules/widgets/transclude.js").transclude;
+
+var ParametersWidget = function(parseTreeNode,options) {
+	// Initialise
+	this.initialise(parseTreeNode,options);
+};
+
+/*
+Inherit from the base widget class
+*/
+ParametersWidget.prototype = new Widget();
+
+/*
+Render this widget into the DOM
+*/
+ParametersWidget.prototype.render = function(parent,nextSibling) {
+	// Call the constructor
+	Widget.call(this);
+	this.parentDomNode = parent;
+	this.computeAttributes();
+	this.execute();
+	this.renderChildren(parent,nextSibling);
+};
+
+/*
+Compute the internal state of the widget
+*/
+ParametersWidget.prototype.execute = function() {
+	var self = this;
+	this.parametersDepth = Math.max(parseInt(this.getAttribute("$depth","1"),10) || 1,1);
+	// Find the parent transclusions
+	var pointer = this.parentWidget,
+		depth = this.parametersDepth;
+	while(pointer) {
+		if(pointer instanceof TranscludeWidget) {
+			depth--;
+			if(depth <= 0) {
+				break;
+			}
+		}
+		pointer = pointer.parentWidget;
+	}
+	// Process each parameter
+	if(pointer instanceof TranscludeWidget) {
+		// Get the value for each defined parameter
+		$tw.utils.each($tw.utils.getOrderedAttributesFromParseTreeNode(self.parseTreeNode),function(attr,index) {
+			var name = attr.name;
+			// If the attribute name starts with $$ then reduce to a single dollar
+			if(name.substr(0,2) === "$$") {
+				name = name.substr(1);
+			}
+			var value = pointer.getTransclusionParameter(name,index,self.getAttribute(attr.name,""));
+			self.setVariable(name,value);
+		});
+		// Assign any metaparameters
+		$tw.utils.each(pointer.getTransclusionMetaParameters(),function(getValue,name) {
+			var variableName = self.getAttribute("$" + name);
+			if(variableName) {
+				self.setVariable(variableName,getValue(name));
+			}
+		});
+	}
+	// Construct the child widgets
+	this.makeChildWidgets();
+};
+
+/*
+Refresh the widget by ensuring our attributes are up to date
+*/
+ParametersWidget.prototype.refresh = function(changedTiddlers) {
+	var changedAttributes = this.computeAttributes();
+	if(Object.keys(changedAttributes).length) {
+		this.refreshSelf();
+		return true;
+	}
+	return this.refreshChildren(changedTiddlers);
+};
+
+exports.parameters = ParametersWidget;
+
+})();

core/modules/widgets/setvariable.js

@@ -48,7 +48,17 @@ SetWidget.prototype.execute = function() {
 	this.setValue = this.getAttribute("value");
 	this.setEmptyValue = this.getAttribute("emptyValue");
 	// Set context variable
-	this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,!!this.parseTreeNode.isMacroDefinition);
+	if(this.parseTreeNode.isMacroDefinition) {
+		this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,true);
+	} else if(this.parseTreeNode.isFunctionDefinition) {
+		this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,undefined,{isFunctionDefinition: true});
+	} else if(this.parseTreeNode.isProcedureDefinition) {
+		this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,undefined,{isProcedureDefinition: true, configTrimWhiteSpace: this.parseTreeNode.configTrimWhiteSpace});
+	} else if(this.parseTreeNode.isWidgetDefinition) {
+		this.setVariable(this.setName,this.getValue(),this.parseTreeNode.params,undefined,{isWidgetDefinition: true, configTrimWhiteSpace: this.parseTreeNode.configTrimWhiteSpace});
+	} else {
+		this.setVariable(this.setName,this.getValue());
+	}
 	// Construct the child widgets
 	this.makeChildWidgets();
 };

core/modules/widgets/slot.js

@@ -0,0 +1,82 @@
+/*\
+title: $:/core/modules/widgets/slot.js
+type: application/javascript
+module-type: widget
+
+Widget for definition of slots within transcluded content. The values provided by the translusion are passed to the slot.
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var Widget = require("$:/core/modules/widgets/widget.js").widget,
+	TranscludeWidget = require("$:/core/modules/widgets/transclude.js").transclude;
+
+var SlotWidget = function(parseTreeNode,options) {
+	// Initialise
+	this.initialise(parseTreeNode,options);
+};
+
+/*
+Inherit from the base widget class
+*/
+SlotWidget.prototype = new Widget();
+
+/*
+Render this widget into the DOM
+*/
+SlotWidget.prototype.render = function(parent,nextSibling) {
+	// Call the constructor
+	Widget.call(this);
+	this.parentDomNode = parent;
+	this.computeAttributes();
+	this.execute();
+	this.renderChildren(parent,nextSibling);
+};
+
+/*
+Compute the internal state of the widget
+*/
+SlotWidget.prototype.execute = function() {
+	var self = this;
+	this.slotName = this.getAttribute("$name");
+	this.slotDepth = parseInt(this.getAttribute("$depth","1"),10) || 1;
+	// Find the parent transclusions
+	var pointer = this.parentWidget,
+		depth = this.slotDepth;
+	while(pointer) {
+		if(pointer instanceof TranscludeWidget) {
+			depth--;
+			if(depth <= 0) {
+				break;
+			}
+		}
+		pointer = pointer.parentWidget;
+	}
+	var parseTreeNodes = [{type: "text", attributes: {text: {type: "string", value: "Missing slot reference!"}}}];
+	if(pointer instanceof TranscludeWidget) {
+		// Get the parse tree nodes comprising the slot contents
+		parseTreeNodes = pointer.getTransclusionSlotFill(this.slotName,this.parseTreeNode.children);
+	}
+	// Construct the child widgets
+	this.makeChildWidgets(parseTreeNodes);
+};
+
+/*
+Refresh the widget by ensuring our attributes are up to date
+*/
+SlotWidget.prototype.refresh = function(changedTiddlers) {
+	var changedAttributes = this.computeAttributes();
+	if(changedAttributes["$name"] || changedAttributes["$depth"]) {
+		this.refreshSelf();
+		return true;
+	}
+	return this.refreshChildren(changedTiddlers);
+};
+
+exports.slot = SlotWidget;
+
+})();

core/modules/widgets/transclude.js

@@ -37,46 +37,347 @@ TranscludeWidget.prototype.render = function(parent,nextSibling) {
 Compute the internal state of the widget
 */
 TranscludeWidget.prototype.execute = function() {
-	// Get our parameters
-	this.transcludeTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
-	this.transcludeSubTiddler = this.getAttribute("subtiddler");
-	this.transcludeField = this.getAttribute("field");
-	this.transcludeIndex = this.getAttribute("index");
-	this.transcludeMode = this.getAttribute("mode");
-	this.recursionMarker = this.getAttribute("recursionMarker","yes");
-	// Parse the text reference
+	// Get our attributes, string parameters, and slot values into properties of the widget object
+	this.collectAttributes();
+	this.collectStringParameters();
+	this.collectSlotFillParameters();
+	// Get the parse tree nodes that we are transcluding
+	var target = this.getTransclusionTarget(),
+		parseTreeNodes = target.parseTreeNodes;
+	this.sourceText = target.text;
+	this.sourceType = target.type;
+	this.parseAsInline = target.parseAsInline;
+	// Process the transclusion according to the output type
+	switch(this.transcludeOutput || "text/html") {
+		case "text/html":
+			// No further processing required
+			break;
+		case "text/raw":
+			// Just return the raw text
+			parseTreeNodes = [{type: "text", text: this.sourceText}];
+			break;
+		default:
+			// text/plain
+			var plainText = this.wiki.renderText("text/plain",this.sourceType,this.sourceText,{parentWidget: this});
+			parseTreeNodes = [{type: "text", text: plainText}];
+			break;
+	}
+	// Set the legacy transclusion context variables only if we're not transcluding a variable
+	if(!this.transcludeVariable) {
+		var recursionMarker = this.makeRecursionMarker();
+		this.setVariable("transclusion",recursionMarker);
+	}
+	// Construct the child widgets
+	this.makeChildWidgets(parseTreeNodes);
+};
+
+/*
+Collect the attributes we need, in the process determining whether we're being used in legacy mode
+*/
+TranscludeWidget.prototype.collectAttributes = function() {
+	var self = this;
+	// Detect legacy mode
+	this.legacyMode = true;
+	$tw.utils.each(this.attributes,function(value,name) {
+		if(name.charAt(0) === "$") {
+			self.legacyMode = false;
+		}
+	});
+	// Get the attributes for the appropriate mode
+	if(this.legacyMode) {
+		this.transcludeTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
+		this.transcludeSubTiddler = this.getAttribute("subtiddler");
+		this.transcludeField = this.getAttribute("field");
+		this.transcludeIndex = this.getAttribute("index");
+		this.transcludeMode = this.getAttribute("mode");
+		this.recursionMarker = this.getAttribute("recursionMarker","yes");
+	} else {
+		this.transcludeVariable = this.getAttribute("$variable");
+		this.transcludeType = this.getAttribute("$type");
+		this.transcludeOutput = this.getAttribute("$output","text/html");
+		this.transcludeTitle = this.getAttribute("$tiddler",this.getVariable("currentTiddler"));
+		this.transcludeSubTiddler = this.getAttribute("$subtiddler");
+		this.transcludeField = this.getAttribute("$field");
+		this.transcludeIndex = this.getAttribute("$index");
+		this.transcludeMode = this.getAttribute("$mode");
+		this.recursionMarker = this.getAttribute("$recursionMarker","yes");
+	}
+};
+
+/*
+Collect string parameters
+*/
+TranscludeWidget.prototype.collectStringParameters = function() {
+	var self = this;
+	this.stringParametersByName = Object.create(null);
+	if(!this.legacyMode) {
+		$tw.utils.each(this.attributes,function(value,name) {
+			if(name.charAt(0) === "$") {
+				if(name.charAt(1) === "$") {
+					// Attributes starting $$ represent parameters starting with a single $
+					name = name.slice(1);
+				} else {
+					// Attributes starting with a single $ are reserved for the widget
+					return;
+				}
+			}
+			self.stringParametersByName[name] = value;
+		});
+	}
+};
+
+/*
+Collect slot value parameters
+*/
+TranscludeWidget.prototype.collectSlotFillParameters = function() {
+	var self = this;
+	this.slotFillParseTrees = Object.create(null);
+	if(this.legacyMode) {
+		this.slotFillParseTrees["ts-missing"] = this.parseTreeNode.children;
+	} else {
+		this.slotFillParseTrees["ts-raw"] = this.parseTreeNode.children;
+		var noFillWidgetsFound = true,
+			searchParseTreeNodes = function(nodes) {
+				$tw.utils.each(nodes,function(node) {
+					if(node.type === "fill") {
+						if(node.attributes["$name"] && node.attributes["$name"].type === "string") {
+							var slotValueName = node.attributes["$name"].value;
+							self.slotFillParseTrees[slotValueName] = node.children || [];
+						}
+						noFillWidgetsFound = false;
+					} else {
+						searchParseTreeNodes(node.children);
+					}
+				});
+			};
+		searchParseTreeNodes(this.parseTreeNode.children);
+		if(noFillWidgetsFound) {
+			this.slotFillParseTrees["ts-missing"] = this.parseTreeNode.children;
+		}
+	}
+};
+
+/*
+Get transcluded parse tree nodes as an object {parser:,text:,type:}
+*/
+TranscludeWidget.prototype.getTransclusionTarget = function() {
+	var self = this;
+	// Determine whether we're being used in inline or block mode
 	var parseAsInline = !this.parseTreeNode.isBlock;
 	if(this.transcludeMode === "inline") {
 		parseAsInline = true;
 	} else if(this.transcludeMode === "block") {
 		parseAsInline = false;
 	}
-	var parser = this.wiki.parseTextReference(
+	var parser;
+	// Get the parse tree
+	if(this.transcludeVariable) {
+		// Transcluding a variable
+		var variableInfo = this.getVariableInfo(this.transcludeVariable,{params: this.getOrderedTransclusionParameters()}),
+			srcVariable = variableInfo && variableInfo.srcVariable;
+		if(srcVariable) {
+			if(srcVariable.isFunctionDefinition) {
+				// Function to return parameters by name or position
+				var fnGetParam = function(name,index) {
+						// Parameter names starting with dollar must be escaped to double dollars
+						if(name.charAt(0) === "$") {
+							name = "$" + name;
+						}
+						// Look for the parameter by name
+						if(self.hasAttribute(name)) {
+							return self.getAttribute(name);
+						// Look for the parameter by index
+						} else if(self.hasAttribute(index + "")) {
+							return self.getAttribute(index + "");
+						} else {
+							return undefined;
+						}
+					},
+					result = this.evaluateVariable(this.transcludeVariable,{params: fnGetParam})[0] || "";
+				parser = {
+					tree: [{
+						type: "text",
+						text: result
+					}],
+					source: result,
+					type: "text/vnd.tiddlywiki"
+				};
+				if(parseAsInline) {
+					parser.tree[0] = {
+						type: "text",
+						text: result
+					};
+				} else {
+					parser.tree[0] = {
+						type: "element",
+						tag: "p",
+						children: [{
+							type: "text",
+							text: result
+						}]
+					}
+				}
+			} else {
+				var cacheKey = (parseAsInline ? "inlineParser" : "blockParser") + (this.transcludeType || "");
+				if(variableInfo.isCacheable && srcVariable[cacheKey]) {
+					parser = srcVariable[cacheKey];
+				} else {
+					parser = this.wiki.parseText(this.transcludeType,variableInfo.text || "",{parseAsInline: parseAsInline, configTrimWhiteSpace: srcVariable.configTrimWhiteSpace});
+					if(variableInfo.isCacheable) {
+						srcVariable[cacheKey] = parser;
+					}
+				}
+			}
+			if(parser) {
+				// Add parameters widget for procedures and custom widgets
+				if(srcVariable.isProcedureDefinition || srcVariable.isWidgetDefinition) {
+					parser = {
+						tree: [
+							{
+								type: "parameters",
+								children: parser.tree
+							}
+						],
+						source: parser.source,
+						type: parser.type
+					}
+					$tw.utils.each(srcVariable.params,function(param) {
+						var name = param.name;
+						// Parameter names starting with dollar must be escaped to double dollars
+						if(name.charAt(0) === "$") {
+							name = "$" + name;
+						}
+						$tw.utils.addAttributeToParseTreeNode(parser.tree[0],name,param["default"])
+					});
+				} else {
+					// For macros and ordinary variables, wrap the parse tree in a vars widget assigning the parameters to variables named "__paramname__"
+					parser = {
+						tree: [
+							{
+								type: "vars",
+								children: parser.tree
+							}
+						],
+						source: parser.source,
+						type: parser.type
+					}
+					$tw.utils.each(variableInfo.params,function(param) {
+						$tw.utils.addAttributeToParseTreeNode(parser.tree[0],"__" + param.name + "__",param.value)
+					});
+				}
+			}
+		}
+	} else {
+		// Transcluding a text reference
+		parser = this.wiki.parseTextReference(
 						this.transcludeTitle,
 						this.transcludeField,
 						this.transcludeIndex,
 						{
 							parseAsInline: parseAsInline,
-							subTiddler: this.transcludeSubTiddler
-						}),
-		parseTreeNodes = parser ? parser.tree : this.parseTreeNode.children;
-	this.sourceText = parser ? parser.source : null;
-	this.parserType = parser? parser.type : null;
-	// Set context variables for recursion detection
-	var recursionMarker = this.makeRecursionMarker();
-	if(this.recursionMarker === "yes") {
-		this.setVariable("transclusion",recursionMarker);
+							subTiddler: this.transcludeSubTiddler,
+							defaultType: this.transcludeType
+						});
 	}
-	// Check for recursion
+	// Return the parse tree
 	if(parser) {
-		if(this.parentWidget && this.parentWidget.hasVariable("transclusion",recursionMarker)) {
-			parseTreeNodes = [{type: "error", attributes: {
-				"$message": {type: "string", value: $tw.language.getString("Error/RecursiveTransclusion")}
-			}}];
+		return {
+			parser: parser,
+			parseTreeNodes: parser.tree,
+			parseAsInline: parseAsInline,
+			text: parser.source,
+			type: parser.type
+		};
+	} else {
+		// If there's no parse tree then return the missing slot value
+		return {
+			parser: null,
+			parseTreeNodes: (this.slotFillParseTrees["ts-missing"] || []),
+			parseAsInline: parseAsInline,
+			text: null,
+			type: null
+		};
+	}
+};
+
+/*
+Fetch all the string parameters as an ordered array of {name:, value:} where the name is optional
+*/
+TranscludeWidget.prototype.getOrderedTransclusionParameters = function() {
+	var result = [];
+	// Collect the parameters
+	for(var name in this.stringParametersByName) {
+		var value = this.stringParametersByName[name];
+		result.push({name: name, value: value});
+	}
+	// Sort numerical parameter names first
+	result.sort(function(a,b) {
+		var aIsNumeric = !isNaN(a.name),
+			bIsNumeric = !isNaN(b.name);
+		if(aIsNumeric && bIsNumeric) {
+			return a.name - b.name;
+		} else if(aIsNumeric) {
+			return -1;
+		} else if(bIsNumeric) {
+			return 1;
+		} else {
+			return a.name === b.name ? 0 : (a.name < b.name ? -1 : 1);
+		}
+	});
+	// Remove names from numerical parameters
+	$tw.utils.each(result,function(param,index) {
+		if(!isNaN(param.name)) {
+			delete param.name;
+		}
+	});
+	return result;
+};
+
+/*
+Fetch the value of a parameter
+*/
+TranscludeWidget.prototype.getTransclusionParameter = function(name,index,defaultValue) {
+	if(name in this.stringParametersByName) {
+		return this.stringParametersByName[name];
+	} else {
+		var name = "" + index;
+		if(name in this.stringParametersByName) {
+			return this.stringParametersByName[name];
 		}
 	}
-	// Construct the child widgets
-	this.makeChildWidgets(parseTreeNodes);
+	return defaultValue;
+};
+
+/*
+Get one of the special parameters to be provided by the parameters widget
+*/
+TranscludeWidget.prototype.getTransclusionMetaParameters = function() {
+	var self = this;
+	return {
+		"parseMode": function() {
+			return self.parseAsInline ? "inline" : "block";
+		},
+		"parseTreeNodes": function() {
+			return JSON.stringify(self.parseTreeNode.children || []);
+		},
+		"slotFillParseTreeNodes": function() {
+			return JSON.stringify(self.slotFillParseTrees);
+		},
+		"params": function() {
+			return JSON.stringify(self.stringParametersByName);
+		}
+	};
+};
+
+/*
+Fetch the value of a slot
+*/
+TranscludeWidget.prototype.getTransclusionSlotFill = function(name,defaultParseTreeNodes) {
+	if(name && this.slotFillParseTrees[name] && this.slotFillParseTrees[name].length > 0) {
+		return this.slotFillParseTrees[name];
+	} else {
+		return defaultParseTreeNodes || [];
+	}
 };
 
 /*
@@ -99,6 +400,7 @@ TranscludeWidget.prototype.makeRecursionMarker = function() {
 };
 
 TranscludeWidget.prototype.parserNeedsRefresh = function() {
+	// Doesn't need to consider transcluded variables because a parent variable can't change once a widget has been created
 	var parserInfo = this.wiki.getTextReferenceParserInfo(this.transcludeTitle,this.transcludeField,this.transcludeIndex,{subTiddler:this.transcludeSubTiddler});
 	return (this.sourceText === undefined || parserInfo.sourceText !== this.sourceText || parserInfo.parserType !== this.parserType)
 };
@@ -108,7 +410,7 @@ Selectively refreshes the widget if needed. Returns true if the widget or any of
 */
 TranscludeWidget.prototype.refresh = function(changedTiddlers) {
 	var changedAttributes = this.computeAttributes();
-	if(($tw.utils.count(changedAttributes) > 0) || (changedTiddlers[this.transcludeTitle] && this.parserNeedsRefresh())) {
+	if(($tw.utils.count(changedAttributes) > 0) || (!this.transcludeVariable && changedTiddlers[this.transcludeTitle] && this.parserNeedsRefresh())) {
 		this.refreshSelf();
 		return true;
 	} else {

core/modules/widgets/widget.js

@@ -41,10 +41,7 @@ Widget.prototype.initialise = function(parseTreeNode,options) {
 	this.parseTreeNode = parseTreeNode;
 	this.wiki = options.wiki;
 	this.parentWidget = options.parentWidget;
-	this.variables = Object.create(null);
-	if(this.parentWidget) {
-		Object.setPrototypeOf(this.variables,this.parentWidget.variables);
-	}
+	this.variables = Object.create(this.parentWidget ? this.parentWidget.variables : null);
 	this.document = options.document;
 	this.attributes = {};
 	this.children = [];
@@ -92,9 +89,22 @@ name: name of the variable
 value: value of the variable
 params: array of {name:, default:} for each parameter
 isMacroDefinition: true if the variable is set via a \define macro pragma (and hence should have variable substitution performed)
+options includes:
+	isProcedureDefinition: true if the variable is set via a \procedure pragma (and hence should not have variable substitution performed)
+	isFunctionDefinition: true if the variable is set via a \function pragma (and hence should not have variable substitution performed)
+	isWidgetDefinition: true if the variable is set via a \widget pragma (and hence should not have variable substitution performed)
 */
-Widget.prototype.setVariable = function(name,value,params,isMacroDefinition) {
-	this.variables[name] = {value: value, params: params, isMacroDefinition: !!isMacroDefinition};
+Widget.prototype.setVariable = function(name,value,params,isMacroDefinition,options) {
+	options = options || {};
+	this.variables[name] = {
+		value: value,
+		params: params,
+		isMacroDefinition: !!isMacroDefinition,
+		isFunctionDefinition: !!options.isFunctionDefinition,
+		isProcedureDefinition: !!options.isProcedureDefinition,
+		isWidgetDefinition: !!options.isWidgetDefinition,
+		configTrimWhiteSpace: !!options.configTrimWhiteSpace
+	};
 };
 
 /*
@@ -104,6 +114,7 @@ options: see below
 Options include
 params: array of {name:, value:} for each parameter
 defaultValue: default value if the variable is not defined
+allowSelfAssigned: if true, includes the current widget in the context chain instead of just the parent
 
 Returns an object with the following fields:
 
@@ -112,21 +123,27 @@ text: text of variable, with parameters properly substituted
 */
 Widget.prototype.getVariableInfo = function(name,options) {
 	options = options || {};
-	var actualParams = options.params || [],
-		parentWidget = this.parentWidget;
+	var self = this,
+		actualParams = options.params || [],
+		variable;
+	if(options.allowSelfAssigned) {
+		variable = this.variables[name];
+	} else {
+		variable = this.parentWidget && this.parentWidget.variables[name];
+	}
 	// Check for the variable defined in the parent widget (or an ancestor in the prototype chain)
-	if(parentWidget && name in parentWidget.variables) {
-		var variable = parentWidget.variables[name],
-			originalValue = variable.value,
+	if(variable) {
+		var originalValue = variable.value,
 			value = originalValue,
-			params = this.resolveVariableParameters(variable.params,actualParams);
-		// Substitute any parameters specified in the definition
-		$tw.utils.each(params,function(param) {
-			value = $tw.utils.replaceString(value,new RegExp("\\$" + $tw.utils.escapeRegExp(param.name) + "\\$","mg"),param.value);
-		});
-		// Only substitute variable references if this variable was defined with the \define pragma
+			params = [];
+		// Only substitute parameter and variable references if this variable was defined with the \define pragma
 		if(variable.isMacroDefinition) {
-			value = this.substituteVariableReferences(value,options);
+			params = self.resolveVariableParameters(variable.params,actualParams);
+			// Substitute any parameters specified in the definition
+			$tw.utils.each(params,function(param) {
+				value = $tw.utils.replaceString(value,new RegExp("\\$" + $tw.utils.escapeRegExp(param.name) + "\\$","mg"),param.value);
+			});
+			value = self.substituteVariableReferences(value,options);
 		}
 		return {
 			text: value,
@@ -136,8 +153,13 @@ Widget.prototype.getVariableInfo = function(name,options) {
 		};
 	}
 	// If the variable doesn't exist in the parent widget then look for a macro module
+	var text = this.evaluateMacroModule(name,actualParams);
+	if(text === undefined) {
+		text = options.defaultValue;
+	}
 	return {
-		text: this.evaluateMacroModule(name,actualParams,options.defaultValue)
+		text: text,
+		srcVariable: {}
 	};
 };
 
@@ -148,6 +170,11 @@ Widget.prototype.getVariable = function(name,options) {
 	return this.getVariableInfo(name,options).text;
 };
 
+/*
+Maps actual parameters onto formal parameters, returning an array of {name:,value:} objects
+formalParams - Array of {name:,default:} (default value is optional)
+actualParams - Array of string values or {name:,value:} (name is optional)
+*/
 Widget.prototype.resolveVariableParameters = function(formalParams,actualParams) {
 	formalParams = formalParams || [];
 	actualParams = actualParams || [];
@@ -160,7 +187,7 @@ Widget.prototype.resolveVariableParameters = function(formalParams,actualParams)
 		paramInfo = formalParams[p];
 		paramValue = undefined;
 		for(var m=0; m<actualParams.length; m++) {
-			if(actualParams[m].name === paramInfo.name) {
+			if(typeof actualParams[m] !== "string" && actualParams[m].name === paramInfo.name) {
 				paramValue = actualParams[m].value;
 			}
 		}
@@ -169,7 +196,8 @@ Widget.prototype.resolveVariableParameters = function(formalParams,actualParams)
 			nextAnonParameter++;
 		}
 		if(paramValue === undefined && nextAnonParameter < actualParams.length) {
-			paramValue = actualParams[nextAnonParameter++].value;
+			var param = actualParams[nextAnonParameter++];
+			paramValue = typeof param === "string" ? param : param.value;
 		}
 		// If we've still not got a value, use the default, if any
 		paramValue = paramValue || paramInfo["default"] || "";
@@ -263,12 +291,103 @@ Widget.prototype.getStateQualifier = function(name) {
 };
 
 /*
-Compute the current values of the attributes of the widget. Returns a hashmap of the names of the attributes that have changed
+Make a fake widget with specified variables, suitable for variable lookup in filters
 */
-Widget.prototype.computeAttributes = function() {
+Widget.prototype.makeFakeWidgetWithVariables = function(variables) {
+	var self = this;
+	return {
+		getVariable: function(name,opts) {
+			if($tw.utils.hop(variables,name)) {
+				return variables[name];
+			} else {
+				opts = opts || {};
+				opts.variables = variables;
+				return self.getVariable(name,opts);
+			};
+		},
+		getVariableInfo: function(name,opts) {
+			if($tw.utils.hop(variables,name)) {
+				return {
+					text: variables[name]
+				};
+			} else {
+				opts = opts || {};
+				opts.variables = variables;
+				return self.getVariableInfo(name,opts);
+			};
+		},
+		makeFakeWidgetWithVariables: self.makeFakeWidgetWithVariables,
+		evaluateVariable: self.evaluateVariable,
+		resolveVariableParameters: self.resolveVariableParameters,
+		wiki: self.wiki
+	};
+};
+
+/*
+Evaluate a variable and associated actual parameters and result the resulting array.
+The way that the variable is evaluated depends upon its type:
+* Functions are evaluated as parameterised filter strings
+* Macros are returned as plain text with substitution of parameters
+* Procedures and widgets are returned as plain text
+
+Options are:
+params - the actual parameters – may be one of:
+	* an array of values that may be an anonymous string value, or a {name:, value:} pair
+	* a hashmap of {name: value} pairs
+	* a function invoked with parameters (name,index) that returns a parameter value by name or position
+source - iterator for source tiddlers
+*/
+Widget.prototype.evaluateVariable = function(name,options) {
+	options = options || {};
+	var params = options.params || [];
+	// Get the details of the variable (includes processing text substitution for macros
+	var variableInfo = this.getVariableInfo(name,{params: params,defaultValue: ""});
+	// Process function parameters
+	var variables = Object.create(null);
+	if(variableInfo.srcVariable && variableInfo.srcVariable.isFunctionDefinition) {
+		// Apply default parameter values
+		$tw.utils.each(variableInfo.srcVariable.params,function(param,index) {
+			if(param["default"]) {
+				variables[param.name] = param["default"];
+			}
+		});
+		if($tw.utils.isArray(params)) {
+			// Parameters are an array of values or {name:, value:} pairs
+			$tw.utils.each(this.resolveVariableParameters(variableInfo.srcVariable.params,params),function(param) {
+				variables[param.name] = param.value;
+			});
+		} else if(typeof params === "function") {
+			// Parameters are passed via a function
+			$tw.utils.each(variableInfo.srcVariable.params,function(param,index) {
+				variables[param.name] = params(param.name,index) || param["default"] || "";
+			});
+		} else {
+			// Parameters are a hashmap
+			$tw.utils.each(params,function(value,name) {
+				variables[name] = value;
+			});
+		}
+		return this.wiki.filterTiddlers(variableInfo.text,this.makeFakeWidgetWithVariables(variables),options.source);
+	} else {
+		return [variableInfo.text];
+	}
+};
+
+/*
+Compute the current values of the attributes of the widget. Returns a hashmap of the names of the attributes that have changed.
+Options include:
+filterFn: only include attributes where filterFn(name) returns true
+*/
+Widget.prototype.computeAttributes = function(options) {
+	options = options || {};
 	var changedAttributes = {},
 		self = this;
 	$tw.utils.each(this.parseTreeNode.attributes,function(attribute,name) {
+		if(options.filterFn) {
+			if(!options.filterFn(name)) {
+				return;
+			}
+		}
 		var value = self.computeAttribute(attribute);
 		if(self.attributes[name] !== value) {
 			self.attributes[name] = value;
@@ -279,13 +398,21 @@ Widget.prototype.computeAttributes = function() {
 };
 
 Widget.prototype.computeAttribute = function(attribute) {
-	var value;
+	var self = this,
+		value;
 	if(attribute.type === "filtered") {
 		value = this.wiki.filterTiddlers(attribute.filter,this)[0] || "";
 	} else if(attribute.type === "indirect") {
 		value = this.wiki.getTextReference(attribute.textReference,"",this.getVariable("currentTiddler"));
 	} else if(attribute.type === "macro") {
-		value = this.getVariable(attribute.value.name,{params: attribute.value.params});
+		var variableInfo = this.getVariableInfo(attribute.value.name,{params: attribute.value.params});
+		if(variableInfo.srcVariable && variableInfo.srcVariable.isFunctionDefinition) {
+			// It is a function definition. Go through each of the defined parameters, and make a variable with the value of the corresponding provided parameter
+			var paramArray = this.resolveVariableParameters(variableInfo.srcVariable.params,attribute.value.params);
+			value = this.evaluateVariable(attribute.value.name,{params: paramArray})[0] || "";
+		} else {
+			value = variableInfo.text;
+		}
 	} else { // String attribute
 		value = attribute.value;
 	}
@@ -413,7 +540,34 @@ options include:
 	variables: optional hashmap of variables to wrap around the widget
 */
 Widget.prototype.makeChildWidget = function(parseTreeNode,options) {
+	var self = this;
 	options = options || {};
+	// Check whether this node type is defined by a custom widget definition
+	var variableDefinitionName = "$" + parseTreeNode.type;
+	if(this.variables[variableDefinitionName]) {
+		var isOverrideable = function() {
+				// Widget is overrideable if it has a double dollar user defined name, or if it is an existing JS widget and we're not in safe mode
+				return parseTreeNode.type.charAt(0) === "$" || (!!self.widgetClasses[parseTreeNode.type] && !$tw.safeMode);
+			};
+		if(!parseTreeNode.isNotRemappable && isOverrideable()) { 
+			var variableInfo = this.getVariableInfo(variableDefinitionName,{allowSelfAssigned: true});
+			if(variableInfo && variableInfo.srcVariable && variableInfo.srcVariable.value && variableInfo.srcVariable.isWidgetDefinition) {
+				var newParseTreeNode = {
+					type: "transclude",
+					children: parseTreeNode.children,
+					isBlock: parseTreeNode.isBlock
+				};
+				$tw.utils.addAttributeToParseTreeNode(newParseTreeNode,"$variable",variableDefinitionName);
+				$tw.utils.each(parseTreeNode.attributes,function(attr,name) {
+					// If the attribute starts with a dollar then add an extra dollar so that it doesn't clash with the $xxx attributes of transclude
+					name = name.charAt(0) === "$" ? "$" + name : name;
+					$tw.utils.addAttributeToParseTreeNode(newParseTreeNode,$tw.utils.extend({},attr,{name: name}));
+				});
+				parseTreeNode = newParseTreeNode;
+			}
+		}
+	}
+	// Get the widget class for this node type
 	var WidgetClass = this.widgetClasses[parseTreeNode.type];
 	if(!WidgetClass) {
 		WidgetClass = this.widgetClasses.text;

core/modules/wiki.js

@@ -988,7 +988,8 @@ exports.parseText = function(type,text,options) {
 	return new Parser(type,text,{
 		parseAsInline: options.parseAsInline,
 		wiki: this,
-		_canonical_uri: options._canonical_uri
+		_canonical_uri: options._canonical_uri,
+		configTrimWhiteSpace: options.configTrimWhiteSpace
 	});
 };
 
@@ -1028,10 +1029,11 @@ exports.parseTextReference = function(title,field,index,options) {
 };
 
 exports.getTextReferenceParserInfo = function(title,field,index,options) {
-	var tiddler,
+	var defaultType = options.defaultType || "text/vnd.tiddlywiki",
+		tiddler,
 		parserInfo = {
 			sourceText : null,
-			parserType : "text/vnd.tiddlywiki"
+			parserType : defaultType
 		};
 	if(options.subTiddler) {
 		tiddler = this.getSubTiddler(title,options.subTiddler);
@@ -1077,19 +1079,20 @@ exports.makeWidget = function(parser,options) {
 			children: []
 		},
 		currWidgetNode = widgetNode;
-	// Create set variable widgets for each variable
-	$tw.utils.each(options.variables,function(value,name) {
-		var setVariableWidget = {
-			type: "set",
+	// Create let variable widget for variables
+	if($tw.utils.count(options.variables) > 0) {
+		var letVariableWidget = {
+			type: "let",
 			attributes: {
-				name: {type: "string", value: name},
-				value: {type: "string", value: value}
 			},
 			children: []
 		};
-		currWidgetNode.children = [setVariableWidget];
-		currWidgetNode = setVariableWidget;
-	});
+		$tw.utils.each(options.variables,function(value,name) {
+			$tw.utils.addAttributeToParseTreeNode(letVariableWidget,name,"" + value);
+		});
+		currWidgetNode.children = [letVariableWidget];
+		currWidgetNode = letVariableWidget;
+	}
 	// Add in the supplied parse tree nodes
 	currWidgetNode.children = parser ? parser.tree : [];
 	// Create the widget

core/ui/Components/VisibleTransclude.tid

@@ -0,0 +1,48 @@
+title: $:/core/ui/VisibleTransclude
+
+<!--
+Import this component to make all the child transclusions visible.
+
+Block transclusions are shown in red, and inline transclusions are shown in green.
+-->
+\widget $transclude()
+<!-- Use a parameters widget so that we can access the `$params` data -->
+<$parameters tiddler="" $$tiddler="" mode="" $$mode="" $parseMode="@parseMode" $params="@params">
+	<!-- Replicate the logic of the transclude widget to determine the output mode, and hence the tag and colour to use for output -->
+	<$let
+		mode={{{ [[$mode]is[variable]then<$mode>!is[blank]] :else[[mode]is[variable]then<mode>!is[blank]] :else[<@parseMode>] }}}
+		outputTag={{{ [<mode>match[inline]then[span]else[div]] }}}
+		outputColour={{{ [<mode>match[inline]then[green]else[red]] }}}
+	>
+		<!-- Use divs or spans according to the mode -->
+		<$genesis $type=<<outputTag>> style="color:white;padding:4px;" style.background=<<outputColour>>>
+			<$genesis $type=<<outputTag>> style="display: inline-block;">
+				<div style="background:white;color:black;font-size: 12px;line-height:1.2;text-align:left;font-weight:normal;padding:4px;margin:4px;">
+					<!-- Render the parameters to the transclusion -->
+					<$list filter="[<@params>jsonindexes[]]" emptyMessage="(none)">
+						<div>
+							<$text text=<<currentTiddler>>/><$text text=": "/><$text text={{{ [<@params>jsonget<currentTiddler>] }}}/>
+						</div>
+					</$list>
+				</div>
+			</$genesis>
+			<$genesis $type=<<outputTag>> style="background:white;color:black;padding:4px;">
+				<!-- Look for a parameter starting with $ to determine if we are in legacy mode -->
+				<$list filter="[<@params>jsonindexes[]] :filter[<currentTiddler>prefix[$]] +[limit[1]]" variable="ignore" emptyMessage="""
+					<!-- Legacy mode: we render the transclusion without a dollar sign for recursionMarker and mode -->
+					<$genesis $type="$transclude" $remappable="no" $names="[<@params>jsonindexes[]]" $values="[<@params>jsonindexes[]] :map[<@params>jsonget<currentTiddler>]" recursionMarker="no" mode=<<mode>>>
+						<!-- Reach back up to the grandparent transclusion to get the correct slot value -->
+						<$slot $name="ts-raw" $depth="2"/>
+					</$genesis>
+				""">
+					<!-- Non-legacy mode: we use dollar signs for the recursionMarker and mode -->
+					<$genesis $type="$transclude" $remappable="no" $names="[<@params>jsonindexes[]]" $values="[<@params>jsonindexes[]] :map[<@params>jsonget<currentTiddler>]" $$recursionMarker="no" $$mode=<<mode>>>
+						<!-- Reach back up to the grandparent transclusion to get the correct slot fill value -->
+						<$slot $name="ts-raw" $depth="2"/>
+					</$genesis>
+				</$list>
+			</$genesis>
+		</$genesis>
+	</$let>
+</$parameters>
+\end

core/wiki/macros/tabs.tid

@@ -60,4 +60,4 @@ code-body: yes
 		</div>
 	</$let>
 </$qualify>
-\end
+\end

editions/prerelease/tiddlers/Release 5.2.8.tid

@@ -1,60 +0,0 @@
-caption: 5.2.8
-created: 20230326093239710
-modified: 20230326093239710
-tags: ReleaseNotes
-title: Release 5.2.8
-type: text/vnd.tiddlywiki
-
-//[[See GitHub for detailed change history of this release|https://github.com/Jermolene/TiddlyWiki5/compare/v5.2.7...master]]//
-
-! Major Improvements
-
-! Translation Improvements
-
-Improvements to the following translations:
-
-* 
-
-! Plugin Improvements
-
-* 
-
-! Accessibility Improvements
-
-* 
-
-! Usability Improvements
-
-* 
-
-! Widget Improvements
-
-* 
-
-! Filter improvements
-
-* 
-
-! Hackability Improvements
-
-* 
-
-! Bug Fixes
-
-* 
-
-! Node.js Improvements
-
-* 
-
-! Performance Improvements
-
-* 
-
-! Acknowledgements
-
-[[@Jermolene|https://github.com/Jermolene]] would like to thank the contributors to this release who have generously given their time to help improve TiddlyWiki:
-
-<<.contributors """
-
-""">>

editions/prerelease/tiddlers/Release 5.3.0.tid

@@ -0,0 +1,83 @@
+caption: 5.3.0
+created: 20230419103154368
+modified: 20230419103154368
+tags: ReleaseNotes
+title: Release 5.3.0
+type: text/vnd.tiddlywiki
+
+//[[See GitHub for detailed change history of this release|https://github.com/Jermolene/TiddlyWiki5/compare/master...parameterised-transclusions]]//
+
+! About v5.3.0
+
+This pre-release introduces a number of significant improvements and new features related to some of TiddlyWiki's most fundamental components: macros, widgets, operators and transclusion.
+
+! Introduction to v5.3.0
+
+The motivation of these changes is to fix one of ~TiddlyWiki 5's early design flaws: the reliance on macros using textual substitution as the primary way to modularise and reuse wikitext and filters.
+
+Experience has shown that while macros are a good match for a small number of tasks, they are brittle and error prone for many common operations. See [[Macro Pitfalls]] for a discussion of the problems that accompany this approach. Over the years we have introduced mitigations for the worst problems but these have come at a cost of increased complexity.
+
+The changes in this release provide powerful new ways to achieve common tasks, and unlock completely new capabilities that were previously impossible in wikitext.
+
+* [[Procedures]], which are essentially what macros should have been; they work in exactly the same way except that parameters are exposed as simple variables (without the double underscores) and no textual substitution takes place
+* [[Custom Widgets]], allowing the creation of widgets in wikitext, and the redefinition of built-in widgets
+* [[Functions]], a new way to encapsulate filter expressions with named parameters, including the ability to make custom filter operators
+* Parameterised [[Transclusions|Transclusion]], allowing strings and wikitext trees to be passed to transclusions
+
+The approach taken by this release is to add new functionality by extending and augmenting the system without disturbing existing functionality. All of these changes are thus intended to be backwards compatible. While they represent a new field of opportunities for wikitext authors, it is possible for authors to ignore all these new features and continue to use ~TiddlyWiki 5 in the way that they have always done.
+
+These changes lay the groundwork for macros and related features to be deprecated (which is the point at which users are advised not to use old features, and instead given clear pointers to the equivalent modern functionality).
+
+The new transclusion architecture is not by itself sufficient to enable us to fully deprecate macros yet. To handle the remaining use cases we propose a new backtick quoted attribute format that allows for the substitution of variable values. See https://github.com/Jermolene/TiddlyWiki5/issues/6663 for details.
+
+! Plugin Improvements
+
+* 
+
+! Translation improvement
+
+Improvements to the following translations:
+
+* 
+
+! Accessibility Improvements
+
+* 
+
+! Usability Improvements
+
+* 
+
+! Widget Improvements
+
+*
+
+! Filter improvements
+
+* 
+
+! Hackability Improvements
+
+* 
+
+! Bug Fixes
+
+* 
+
+! Developer Improvements
+
+* 
+
+! Node.js Improvements
+
+* 
+
+! Performance Improvements
+
+* 
+! Acknowledgements
+
+[[@Jermolene|https://github.com/Jermolene]] would like to thank the contributors to this release who have generously given their time to help improve TiddlyWiki:
+
+<<.contributors """
+""">>

editions/test/tiddlers/tests/data/custom-operators/NestedParameterised.tid

@@ -0,0 +1,24 @@
+title: CustomOperators/NestedParameterised
+description: Nested parameterised custom operator usage
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\function .dividebysomething(first:ignored,factor:0.5)
+[divide[2]multiply<factor>]
+\end
+
+\function .multiplebysomething(first:ignored,factor:2)
+[multiply[2].dividebysomething[],<factor>]
+\end
+
+<$text text={{{ [[123].multiplebysomething[]] }}}/>
+-
+<$text text={{{ [[123].multiplebysomething[x],[4]] }}}/>
+
++
+title: ExpectedResult
+
+<p>246-492</p>

editions/test/tiddlers/tests/data/custom-operators/Parameterised.tid

@@ -0,0 +1,24 @@
+title: CustomOperators/Parameterised
+description: Parameterised custom operator usage
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\function .multiplybysomething(first:ignored,factor:2)
+[multiply[2]multiply<factor>]
+\end
+
+<$text text={{{ [[123].multiplybysomething[]] }}}/>
+-
+<$text text={{{ [[123].multiplybysomething[x],[4]] }}}/>
+|
+<$text text={{{ [[123]function[.multiplybysomething]] }}}/>
+-
+<$text text={{{ [[123]function[.multiplybysomething],[x],[4]] }}}/>
+
++
+title: ExpectedResult
+
+<p>492-984|492-984</p>

editions/test/tiddlers/tests/data/custom-operators/Simple.tid

@@ -0,0 +1,21 @@
+title: CustomOperators/Simple
+description: Simple custom operator usage
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+
+\function .multiplybytwo()
+[multiply[2]]
+\end
+
+<$text text={{{ [[123].multiplybytwo[]] }}}/>
+|
+<$text text={{{ [[123]function[.multiplybytwo]] }}}/>
+
++
+title: ExpectedResult
+
+<p>246|246</p>

editions/test/tiddlers/tests/data/functions/FunctionAttributes.tid

@@ -0,0 +1,24 @@
+title: Functions/FunctionAttributes
+description: Attributes specified as function invocations
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\function .dividebysomething(factor:0.5)
+[divide<factor>]
+\end
+
+\function multiplebysomething(first:ignored,factor:2)
+[<factor>multiply[2].dividebysomething[0.25]]
+\end
+
+<$text text=<<multiplebysomething>>/>
+|
+<$text text=<<multiplebysomething "nothing" "4">>/>
+
++
+title: ExpectedResult
+
+<p>16|32</p>

editions/test/tiddlers/tests/data/functions/FunctionOperator.tid

@@ -0,0 +1,24 @@
+title: Functions/FunctionOperator
+description: Calling a function via the function operator
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\function .dividebysomething(factor:0.5)
+[divide<factor>]
+\end
+
+\function multiplebysomething(first:ignored,factor:2)
+[multiply<factor>multiply[2].dividebysomething[0.25]]
+\end
+
+<$text text={{{ [[4]function[multiplebysomething]] }}}/>
+|
+<$text text={{{ [[6]function[multiplebysomething],[ignored],[4]] }}}/>
+
++
+title: ExpectedResult
+
+<p>64|192</p>

editions/test/tiddlers/tests/data/functions/MissingFunction.tid

@@ -0,0 +1,15 @@
+title: Functions/MissingFunction
+description: Calling a missing function via the function operator
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+
+<$text text={{{ [[23]function[missing]] }}}/>
+
++
+title: ExpectedResult
+
+23

editions/test/tiddlers/tests/data/functions/RunawayRecursiveFunctions.tid

@@ -0,0 +1,18 @@
+title: Functions/RunawayRecursiveFunctions
+description: Runaway recursive functions
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\function .buffalo(p)
+[.buffalo<p>]
+\end
+
+<$text text=<<.buffalo 8>>/>
+
++
+title: ExpectedResult
+
+/**-- Excessive filter recursion --**/

editions/test/tiddlers/tests/data/functions/UndefinedParameters.tid

@@ -0,0 +1,22 @@
+title: Functions/UndefinedParameters
+description: Undefined function parameters
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\function greet(who)
+[[hello ]addsuffix<who>]
+\end
+
+<$text text={{{[function[greet],[world]]}}}/>
+
+<<greet world>>
+
+<$text text={{{[function[greet]]}}}/>
+
+<<greet>>
++
+title: ExpectedResult
+
+hello world<p>hello world</p>hello <p>hello </p>

editions/test/tiddlers/tests/data/functions/WikifiedFunctions.tid

@@ -0,0 +1,36 @@
+title: Functions/WikifiedFunctions
+description: Wikified functions
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\function fn-buffalo(param)
+[<param>addsuffix[ with a ''buffalo'']]
+\end
+
+\procedure proc-buffalo(param)
+<<param>> with a ''buffalo''
+\end
+
+\define macro-buffalo(param)
+$param$ with a ''buffalo''
+\end
+
+<<fn-buffalo "Going to lunch">>
+
+<<proc-buffalo "Going to breakfast">>
+
+<<macro-buffalo "Going to dinner">>
+
+<$transclude $variable="fn-buffalo" param="Going to lunch" $output="text/plain"/>
+
+<$transclude $variable="proc-buffalo" param="Going to breakfast" $output="text/plain"/>
+
+<$transclude $variable="macro-buffalo" param="Going to dinner" $output="text/plain"/>
+
++
+title: ExpectedResult
+
+<p>Going to lunch with a ''buffalo''</p><p>Going to breakfastwith a<strong>buffalo</strong></p><p>Going to dinner with a <strong>buffalo</strong></p>Going to lunch with a buffalo with a buffaloGoing to dinner with a buffalo

editions/test/tiddlers/tests/data/genesis-widget/RedefineLet.tid

@@ -0,0 +1,31 @@
+title: Genesis/RedefineLet
+description: Using the genesis widget to override the let widget
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\widget $let()
+\whitespace trim
+<$parameters $params="@params">
+<$setmultiplevariables $names="[<@params>jsonindexes[]]" $values="[<@params>jsonindexes[]] :map[<@params>jsonget<currentTiddler>addprefix[--]addsuffix[--]]">
+<$slot $name="ts-raw"/>
+</$setmultiplevariables>
+</$parameters>
+\end
+<$let
+	one="Elephant"
+	$two="Kangaroo"
+	$$three="Giraffe"
+>
+(<$text text=<<one>>/>)
+(<$text text=<<$two>>/>)
+(<$text text=<<$$three>>/>)
+</$let>
++
+title: ExpectedResult
+
+<p>(--Elephant--)
+(--Kangaroo--)
+(--Giraffe--)</p>

editions/test/tiddlers/tests/data/procedures/Nested.tid

@@ -0,0 +1,20 @@
+title: Procedures/Nested
+description: Nested Procedures
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\procedure alpha(x)
+\procedure beta(y)
+<$text text=<<y>>/>
+\end beta
+<$transclude $variable="beta" y={{{ [<x>addprefix<x>] }}}/>
+\end alpha
+
+<<alpha "Elephant">>
++
+title: ExpectedResult
+
+<p>ElephantElephant</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-ActionWidget.tid

@@ -0,0 +1,27 @@
+title: Transclude/CustomWidget/ActionWidget
+description: Custom widget definition
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='Result'>
+</$transclude>
++
+title: Actions
+
+\whitespace trim
+<!-- Define the <$$action-mywidget> widget by defining a transcludable variable with that name -->
+\widget $$action-mywidget(one:'Jaguar')
+\whitespace trim
+<$action-setfield $tiddler="Result" $field="text" $value=<<one>>/>
+\end
+
+<$$action-mywidget one="Dingo">
+	Crocodile
+</$$action-mywidget>
++
+title: ExpectedResult
+
+<p>Dingo</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-Fail.tid

@@ -0,0 +1,26 @@
+title: Transclude/CustomWidget/Fail
+description: Custom widget failed definition
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<!-- Attempt to define the <$non-existent-widget> widget by defining a transcludable variable with that name -->
+\widget $non-existent-widget(one:'Jaguar')
+\whitespace trim
+<$text text=<<one>>/>
+<$slot $name="ts-raw">
+	Whale
+</$slot>
+\end
+<$non-existent-widget one="Dingo">
+	Crocodile
+</$non-existent-widget>
+<$non-existent-widget one="BumbleBee">
+	Squirrel
+</$non-existent-widget>
++
+title: ExpectedResult
+
+<p>Undefined widget 'non-existent-widget'Undefined widget 'non-existent-widget'</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-Override-Codeblock.tid

@@ -0,0 +1,29 @@
+title: CustomWidget-Override-Codeblock
+description: Usage of genesis widget with attributes starting with dollar signs
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\import Definition
+<$codeblock code="Kangaroo"/>
+<$codeblock code={{Subject}}/>
+<$let test="Tiger">
+<$codeblock code=<<test>>/>
+</$let>
++
+title: Definition
+
+\whitespace trim
+\widget $codeblock(code)
+<$genesis $type="$codeblock" $remappable="no" code={{{ [<code>addprefix[£]addsuffix[@]] }}}/>
+\end
++
+title: Subject
+
+Python
++
+title: ExpectedResult
+
+<p><pre><code>£Kangaroo@</code></pre><pre><code>£Python@</code></pre><pre><code>£Tiger@</code></pre></p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-OverrideTransclude.tid

@@ -0,0 +1,33 @@
+title: Transclude/CustomWidget/OverrideTransclude
+description: Custom widget definition attempting to override transclude
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+</$transclude>
++
+title: TiddlerZero
+
+Antelope
++
+title: TiddlerOne
+
+\whitespace trim
+<!-- Redefine the <$transclude> widget by defining a transcludable variable with that name -->
+\widget $transclude(one:'Jaguar')
+\whitespace trim
+	<$text text=<<one>>/>
+	<$slot $name="body">
+		Whale
+	</$slot>
+\end
+<$genesis $type="$transclude" $remappable="no" $$tiddler="TiddlerZero">
+	Crocodile
+</$genesis>
++
+title: ExpectedResult
+
+<p>Antelope</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-Simple.tid

@@ -0,0 +1,33 @@
+title: Transclude/CustomWidget/Simple
+description: Custom widget definition
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<!-- Define the <$$mywidget> widget by defining a transcludable variable with that name -->
+\widget $$mywidget(one:'Jaguar')
+\whitespace trim
+<$text text=<<one>>/>
+<$slot $name="ts-raw">
+	Whale
+</$slot>
+\end
+<$$mywidget one="Dingo">
+	Crocodile
+</$$mywidget>
+<$$mywidget one="BumbleBee">
+	Squirrel
+</$$mywidget>
+<$$mywidget/>
++
+title: ExpectedResult
+
+<p>DingoCrocodileBumbleBeeSquirrelJaguarWhale</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-Slotted-Empty.tid

@@ -0,0 +1,20 @@
+title: CustomWidget/Slotted/Empty
+description: Custom widget with empty slotted values
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\widget $$mywidget()
+<$slot $name=ts-raw>the body is empty</$slot>
+\end
+
+#<$$mywidget/>
+#<$$mywidget></$$mywidget>
+#<$$mywidget>the body is not empty</$$mywidget>
+
++
+title: ExpectedResult
+
+<ol><li>the body is empty</li><li>the body is empty</li><li>the body is not empty</li></ol>

editions/test/tiddlers/tests/data/transclude/CustomWidget-Slotted.tid

@@ -0,0 +1,27 @@
+title: Transclude/CustomWidget/Slotted
+description: Custom widget definition
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\widget $$mywidget(one:'Jaguar')
+\whitespace trim
+<$text text=<<one>>/>
+<$slot $name="ts-stuff">
+	Whale
+</$slot>
+\end
+<$$mywidget one="Dingo">
+	<$fill $name="ts-stuff">
+		Crocodile
+	</$fill>
+</$$mywidget>
+<$$mywidget one="BumbleBee">
+	Squirrel
+</$$mywidget>
++
+title: ExpectedResult
+
+<p>DingoCrocodileBumbleBeeWhale</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-TextWidgetOverride.tid

@@ -0,0 +1,27 @@
+title: Transclude/CustomWidget/TextWidgetOverride
+description: Custom widget definition redefining the text widget
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne'>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<!-- Redefining the text widget only works when it is explicitly invoked with the <$text> syntax, and not implicitly via typed text -->
+\widget $text(text:'Jaguar')
+\whitespace trim
+<$genesis $type="$text" $remappable="no" text={{{ [<text>addprefix[≤]addsuffix[≥]] }}}/>
+\end
+
+<$text text="Dingo"/>
+
+Crocodile
++
+title: ExpectedResult
+
+<p>≤Dingo≥≤Jaguar≥</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-TextWidgetOverrideWithSlot.tid

@@ -0,0 +1,31 @@
+title: Transclude/CustomWidget/TextWidgetOverrideWithSlot
+description: Custom widget definition redefining the text widget
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne'>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<!-- Redefine the <$text> widget by defining a transcludable variable with that name -->
+\widget $text(text:'Jaguar')
+\whitespace trim
+<$genesis $type="$text" $remappable="no" text=<<text>>/>
+<$set name="$text" value="">
+	<$slot $name="ts-raw">
+		Whale
+	</$slot>
+</$set>
+\end
+<$text text="Dingo">
+	Crocodile
+</$text>
++
+title: ExpectedResult
+
+<p>DingoCrocodile</p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-Unoverride-Codeblock.tid

@@ -0,0 +1,31 @@
+title: CustomWidget-Unoverride-Codeblock
+description: Usage of genesis widget with attributes starting with dollar signs, and unoverriding a core widget
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\import Definition
+<$let $codeblock="">
+<$codeblock code="Kangaroo"/>
+<$codeblock code={{Subject}}/>
+<$let test="Tiger">
+<$codeblock code=<<test>>/>
+</$let>
+</$let>
++
+title: Definition
+
+\whitespace trim
+\widget $codeblock(code)
+<$genesis $type="codeblock" $remappable="no" code={{{ [<code>addprefix[£]addsuffix[@]] }}}/>
+\end
++
+title: Subject
+
+Python
++
+title: ExpectedResult
+
+<p><pre><code>Kangaroo</code></pre><pre><code>Python</code></pre><pre><code>Tiger</code></pre></p>

editions/test/tiddlers/tests/data/transclude/CustomWidget-VariableAttribute.tid

@@ -0,0 +1,29 @@
+title: Transclude/CustomWidget/VariableAttribute
+description: Custom widget definition using an attribute called $variable
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<!-- Redefine the <$$mywidget> widget by defining a transcludable variable with that name -->
+\widget $$mywidget($variable:'Jaguar')
+\whitespace trim
+<$text text=<<$variable>>/>
+<$slot $name="ts-raw">
+	Whale
+</$slot>
+\end
+<$$mywidget $variable="Dingo">
+	Crocodile
+</$$mywidget>
++
+title: ExpectedResult
+
+<p>DingoCrocodile</p>

editions/test/tiddlers/tests/data/transclude/JavaScript-Macro.tid

@@ -0,0 +1,17 @@
+title: Transclude/Macro/JavaScript
+description: Transcluding a javascript macro
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+
+<<makedatauri text:"Wildebeest" type:"text/plain">>
+
+<$macrocall $name="makedatauri" text="Wildebeest" type="text/plain"/>
+
++
+title: ExpectedResult
+
+<p><a class="tc-tiddlylink-external" href="data:text/plain,Wildebeest" rel="noopener noreferrer" target="_blank">data:text/plain,Wildebeest</a></p><p><a class="tc-tiddlylink-external" href="data:text/plain,Wildebeest" rel="noopener noreferrer" target="_blank">data:text/plain,Wildebeest</a></p>

editions/test/tiddlers/tests/data/transclude/Macro-Plain.tid

@@ -0,0 +1,17 @@
+title: Transclude/Macro/Plain
+description: Transcluding a macro as plain text
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$let currentTab="Jeremy">
+<$macrocall $name="currentTab" $type="text/plain" $output="text/plain"/>
+|
+<$transclude $variable="currentTab" $type="text/plain" $output="text/plain"/>
+</$let>
++
+title: ExpectedResult
+
+<p>Jeremy|Jeremy</p>

editions/test/tiddlers/tests/data/transclude/Macro-Simple.tid

@@ -0,0 +1,26 @@
+title: Transclude/Macro/Simple
+description: Transcluding a macro
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\define mamacro(one:"red",two:"green")
+It is $one$ and $two$ or <<__one__>> and <<__two__>>.
+\end
+
+<$macrocall $name="mamacro"/>
+
+<$transclude $variable="mamacro"/>
+
+<$transclude $variable="mamacro" one="orange"/>
+
+<$transclude $variable="mamacro" 0="pink"/>
+
+<$transclude $variable="mamacro" one="purple" 1="pink"/>
+
++
+title: ExpectedResult
+
+<p>It is red and green or red and green.</p><p>It is red and green or red and green.</p><p>It is orange and green or orange and green.</p><p>It is pink and green or pink and green.</p><p>It is purple and pink or purple and pink.</p>

editions/test/tiddlers/tests/data/transclude/MissingTarget.tid

@@ -0,0 +1,48 @@
+title: Transclude/MissingTarget
+description: Transcluding a missing target
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+	<$parameters one='Ferret'>
+		Badger
+		<$text text=<<one>>/>
+	</$parameters>
+</$transclude>
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+	<$fill $name="ts-missing">
+		<$parameters one='Ferret'>
+			Badger
+			<$text text=<<one>>/>
+		</$parameters>
+	</$fill>
+</$transclude>
+<$transclude $tiddler='MissingTiddler' one='Ferret'>
+	<$parameters one='Ferret'>
+		Badger
+		<$text text=<<one>>/>
+	</$parameters>
+</$transclude>
+<$transclude $tiddler='MissingTiddler' one='Ferret'>
+	<$fill $name="ts-missing">
+		<$parameters one='Ferret'>
+			Badger
+			<$text text=<<one>>/>
+		</$parameters>
+	</$fill>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters one='Kangaroo'>
+	Piranha
+	<$text text=<<one>>/>
+</$parameters>
++
+title: ExpectedResult
+
+<p>PiranhaFerretPiranhaFerretBadgerFerretBadgerFerret</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Depth.tid

@@ -0,0 +1,34 @@
+title: Transclude/Parameterised/Depth
+description: Parameterised transclusion using the $depth attribute
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'/>
+|
+<$transclude $tiddler='TiddlerOne'/>
+|
+<$transclude $tiddler='TiddlerOne' one='Ferret' $$two="Osprey"/>
+|
+<$transclude $tiddler='TiddlerOne' $$two="Falcon"/>
++
+title: TiddlerOne
+
+\whitespace trim
+{{TiddlerTwo}}
++
+title: TiddlerTwo
+
+\whitespace trim
+<$parameters one='Jaguar' $$two='Piranha' $depth="2">
+	<$text text=<<one>>/>:<$text text=<<$two>>/>
+</$parameters>
+<$parameters one='Leopard' $$two='Coelacanth'>
+	(<$text text=<<one>>/>|<$text text=<<$two>>/>)
+</$parameters>
++
+title: ExpectedResult
+
+<p>Ferret:Piranha(Leopard|Coelacanth)|Jaguar:Piranha(Leopard|Coelacanth)|Ferret:Osprey(Leopard|Coelacanth)|Jaguar:Falcon(Leopard|Coelacanth)</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Mode.tid

@@ -0,0 +1,29 @@
+title: Transclude/Parameterised/Mode
+description: Parameterised transclusion using the $parseMode attribute
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+
+This is a block
+
+</$transclude>
+
+<$transclude $tiddler='TiddlerOne'>
+This is inline
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters $parseMode="@parseMode">
+	<$text text=<<@parseMode>>/>
+</$parameters>
++
+title: ExpectedResult
+
+<p>block</p><p>inline</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Name-Values.tid

@@ -0,0 +1,34 @@
+title: Transclude/Parameterised/Name/Values
+description: Parameterised transclusion accessing parameters as name/value pairs
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler="TiddlerOne" 0="" 1="" 2=""/>
+
+{{TiddlerOne}}
+{{TiddlerOne|Ferret}}
+{{TiddlerOne|Butterfly|Moth}}
+{{TiddlerOne|Beetle|Scorpion|Snake}}
+{{TiddlerOne||TiddlerTwo|Beetle|Scorpion|Snake}}
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters zero='Jaguar' $$one='Lizard' two='Mole' $params="@params">
+<$list filter="[<@params>jsonindexes[]]">
+{<$text text=<<currentTiddler>>/>: <$text text={{{ [<@params>jsonget<currentTiddler>] }}}/>}
+</$list>
+</$parameters>
++
+title: TiddlerTwo
+
+\whitespace trim
+\parameters(zero:'Mouse',$one:'Horse',two:'Owl')
+(<$transclude $tiddler=<<currentTiddler>> zero=<<zero>> $$one=<<$one>> two=<<two>>/>)
++
+title: ExpectedResult
+
+<p>{0:}{1:}{2:}</p><p></p><p>{0:Ferret}</p><p>{0:Butterfly}{1:Moth}</p><p>{0:Beetle}{1:Scorpion}{2:Snake}</p><p>({$one:Scorpion}{two:Snake}{zero:Beetle})</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-ParseTreeNodes.tid

@@ -0,0 +1,29 @@
+title: Transclude/Parameterised/ParseTreeNodes
+description: Parameterised transclusion using the $parseTreeNodes attribute
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+
+This is a block
+
+</$transclude>
+
+<$transclude $tiddler='TiddlerOne'>
+This is inline
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters $parseTreeNodes="@parseTreeNodes">
+	<$text text=<<@parseTreeNodes>>/>
+</$parameters>
++
+title: ExpectedResult
+
+<p>[{"type":"element","tag":"p","children":[{"type":"text","text":"This is a block","start":68,"end":83}],"start":68,"end":83}]</p><p>[{"type":"text","text":"This is inline","start":136,"end":152}]</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Positional-Shortcut-Parameters.tid

@@ -0,0 +1,29 @@
+title: Transclude/Parameterised/Positional/Shortcut/Parameters
+description: Positional parameterised transclusion using shortcut syntax and parameters pragma
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+{{TiddlerOne}}
+{{TiddlerOne|Ferret}}
+{{TiddlerOne|Butterfly|Moth}}
+{{TiddlerOne|Beetle|Scorpion|Snake}}
+{{TiddlerOne||TiddlerTwo|Beetle|Scorpion|Snake}}
++
+title: TiddlerOne
+
+\whitespace trim
+\parameters(zero:Jaguar,one:'Lizard',two:'Mole')
+[{<$text text=<<zero>>/>}{<$text text=<<one>>/>}{<$text text=<<two>>/>}]
++
+title: TiddlerTwo
+
+\whitespace trim
+\parameters(zero:'Mouse',one:Horse,two:'Owl')
+(<$transclude $tiddler=<<currentTiddler>> zero=<<zero>> one=<<one>> two=<<two>>/>)
++
+title: ExpectedResult
+
+<p>[{Jaguar}{Lizard}{Mole}]</p><p>[{Ferret}{Lizard}{Mole}]</p><p>[{Butterfly}{Moth}{Mole}]</p><p>[{Beetle}{Scorpion}{Snake}]</p><p>([{Beetle}{Scorpion}{Snake}])</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Positional-Shortcut.tid

@@ -0,0 +1,29 @@
+title: Transclude/Parameterised/Positional/Shortcut
+description: Positional parameterised transclusion using shortcut syntax
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+{{TiddlerOne}}
+{{TiddlerOne|Ferret}}
+{{TiddlerOne|Butterfly|Moth}}
+{{TiddlerOne|Beetle|Scorpion|Snake}}
+{{TiddlerOne||TiddlerTwo|Beetle|Scorpion|Snake}}
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters zero='Jaguar' one='Lizard' two='Mole'>[{<$text text=<<zero>>/>}{<$text text=<<one>>/>}{<$text text=<<two>>/>}]</$parameters>
++
+title: TiddlerTwo
+
+\whitespace trim
+<$parameters zero='Mouse' one='Horse' two='Owl'>
+(<$transclude $tiddler=<<currentTiddler>> zero=<<zero>> one=<<one>> two=<<two>>/>)
+</$parameters>
++
+title: ExpectedResult
+
+<p>[{Jaguar}{Lizard}{Mole}]</p><p>[{Ferret}{Lizard}{Mole}]</p><p>[{Butterfly}{Moth}{Mole}]</p><p>[{Beetle}{Scorpion}{Snake}]</p><p>([{Beetle}{Scorpion}{Snake}])</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Positional-Variables.tid

@@ -0,0 +1,30 @@
+title: Transclude/Parameterised/Positional/Variables
+description: Positional parameterised transclusion of variables
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\function myfunction(alpha:"apple",beta:"banana",gamma:"grenadine") [<alpha>]
+\define mymacro(alpha:"apple",beta:"banana",gamma:"grenadine") $beta$
+\function f(a) [<a>]
+
+(Functions:
+<$text text={{{ [<myfunction gamma:"unused" f1>] }}}/>
+,
+<$text text=<<myfunction gamma:"unused" f1>>/>
+,
+<<myfunction gamma:"unused" f1>>
+)(Macros:
+<$text text={{{ [<mymacro gamma:"unused" f1>] }}}/>
+,
+<$text text=<<mymacro gamma:"unused" f1>>/>
+,
+<<mymacro gamma:"unused" f1>>
+)
+
++
+title: ExpectedResult
+
+<p>(Functions:f1,f1,f1)(Macros:banana,banana,banana)</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Positional.tid

@@ -0,0 +1,26 @@
+title: Transclude/Parameterised/Positional
+description: Positional parameterised transclusion
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' zero='Ferret'/>
+<$transclude zero='Ferret' $tiddler='TiddlerOne'/>
+<$transclude $tiddler='TiddlerOne' 0='Pigeon'/>
+<$transclude 0='Pigeon' $tiddler='TiddlerOne'/>
+<$transclude $tiddler='TiddlerOne' zero='Ferret' 0='Pigeon'/>
+<$transclude zero='Ferret' 0='Pigeon' $tiddler='TiddlerOne'/>
+<$transclude $tiddler='TiddlerOne'/>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters zero='Jaguar'>
+	<$text text=<<zero>>/>
+</$parameters>
++
+title: ExpectedResult
+
+<p>FerretFerretPigeonPigeonFerretFerretJaguar</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Shortcut-Parameters.tid

@@ -0,0 +1,20 @@
+title: Transclude/Parameterised/Shortcut/Parameters
+description: Simple parameterised transclusion using the parameters pragma
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'/>
+<$transclude $tiddler='TiddlerOne'/>
++
+title: TiddlerOne
+
+\whitespace trim
+\parameters(one:'Jaguar')
+<$text text=<<one>>/>
++
+title: ExpectedResult
+
+<p>FerretJaguar</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Shortcut.tid

@@ -0,0 +1,21 @@
+title: Transclude/Parameterised/Shortcut
+description: Simple parameterised transclusion
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\procedure test(one:'Jaguar')
+{<$text text=<<one>>/>}
+\end
+
+<$transclude $variable='test' one='Ferret'/>
+<$transclude $variable='test'/>
+<<test "Rat">>
+<<test one:"Mouse">>
+
++
+title: ExpectedResult
+
+<p>{Ferret}{Jaguar}{Rat}{Mouse}</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Simple.tid

@@ -0,0 +1,26 @@
+title: Transclude/Parameterised/Simple
+description: Simple parameterised transclusion
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'/>
+|
+<$transclude $tiddler='TiddlerOne'/>
+|
+<$transclude $tiddler='TiddlerOne' one='Ferret' $$two="Osprey"/>
+|
+<$transclude $tiddler='TiddlerOne' $$two="Falcon"/>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters one='Jaguar' $$two='Piranha'>
+	<$text text=<<one>>/>:<$text text=<<$two>>/>
+</$parameters>
++
+title: ExpectedResult
+
+<p>Ferret:Piranha|Jaguar:Piranha|Ferret:Osprey|Jaguar:Falcon</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-SlotFillParseTreeNodes.tid

@@ -0,0 +1,29 @@
+title: Transclude/Parameterised/SlotFillParseTreeNodes
+description: Parameterised transclusion using the $slotFillParseTreeNodes attribute
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+<$fill $name="one">This is first</$fill>
+<$fill $name="two">But this is second</$fill>
+</$transclude>
+
+<$transclude $tiddler='TiddlerOne'>
+<$fill $name="one">This is first
+<$fill $name="two">But this is second</$fill></$fill>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters $slotFillParseTreeNodes="@slotFillParseTreeNodes">
+	<$text text={{{ [<@slotFillParseTreeNodes>jsonindexes[]join[,]] }}}/>
+</$parameters>
++
+title: ExpectedResult
+
+<p>one,ts-raw,two</p><p>one,ts-raw</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Slotted-Missing.tid

@@ -0,0 +1,24 @@
+title: Transclude/Parameterised/Slotted/Missing
+description: Parameterised transclusion with slotted missing values
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters one='Jaguar'>
+	<$text text=<<one>>/>
+	<$slot $name="content">
+		Whale
+	</$slot>
+</$parameters>
++
+title: ExpectedResult
+
+<p>FerretWhale</p>

editions/test/tiddlers/tests/data/transclude/Parameterised-Slotted.tid

@@ -0,0 +1,27 @@
+title: Transclude/Parameterised/Slotted
+description: Parameterised transclusion with slotted values
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+<$transclude $tiddler='TiddlerOne' one='Ferret'>
+	<$fill $name="content">
+		Hippopotamus
+	</$fill>
+</$transclude>
++
+title: TiddlerOne
+
+\whitespace trim
+<$parameters one='Jaguar'>
+	<$text text=<<one>>/>
+	<$slot $name="content">
+		Whale
+	</$slot>
+</$parameters>
++
+title: ExpectedResult
+
+<p>FerretHippopotamus</p>

editions/test/tiddlers/tests/data/transclude/Procedures-Whitespace.tid

@@ -0,0 +1,25 @@
+title: Transclude/Procedures/Whitespace
+description: Procedures should inherit whitespace settings from definition site
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\whitespace trim
+\procedure testproc()
+This is a sentence    
+\end
+
+\define testmacro()
+This is a sentence    
+\end
+This is a sentence
+[<<testproc>>]
+[<<testmacro>>]
+
++
+title: ExpectedResult
+
+<p>This is a sentence
+[This is a sentence]
+[This is a sentence    ]</p>

editions/test/tiddlers/tests/data/transclude/Typed.tid

@@ -0,0 +1,38 @@
+title: Transclude/Typed
+description: Typed transclusion
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+
+title: Output
+
+\procedure testproc()
+This is ''wikitext''
+\end
+
+<$transclude $variable="testproc"/>
+-
+<$transclude $variable="testproc" $type="text/plain"/>
+
+<$transclude $tiddler="Data" $index="testindex"/>
+-
+<$transclude $tiddler="Data" $index="testindex" $type="text/plain"/>
+
+<$transclude $tiddler="Data" $field="custom"/>
+-
+<$transclude $tiddler="Data" $field="custom" $type="text/plain"/>
++
+title: Data
+type: application/x-tiddler-dictionary
+custom: This is ''wikitext''
+
+testindex: This is ''wikitext''
++
+title: ExpectedResult
+
+<p>This is <strong>wikitext</strong>
+-
+<pre><code>This is ''wikitext''</code></pre></p><p>This is <strong>wikitext</strong>
+-
+<pre><code>This is ''wikitext''</code></pre></p><p>This is <strong>wikitext</strong>
+-
+<pre><code>This is ''wikitext''</code></pre></p>

editions/test/tiddlers/tests/test-filters.js

@@ -422,7 +422,7 @@ Tests the filtering mechanism.
 			expect(wiki.filterTiddlers("[[one]tagging[]sort[title]]").join(",")).toBe("Tiddler Three,Tiddler8,TiddlerOne,TiddlerSeventh");
 			expect(wiki.filterTiddlers("[[one]tagging[]]").join(",")).toBe("Tiddler Three,TiddlerOne,TiddlerSeventh,Tiddler8");
 			expect(wiki.filterTiddlers("[[two]tagging[]sort[title]]").join(",")).toBe("$:/TiddlerFive,$:/TiddlerTwo,Tiddler Three");
-			var fakeWidget = {getVariable: function() {return "one";}};
+			var fakeWidget = {wiki: wiki, getVariable: function(name) {return name === "currentTiddler" ? "one": undefined;}};
 			expect(wiki.filterTiddlers("[all[current]tagging[]]",fakeWidget).join(",")).toBe("Tiddler Three,TiddlerOne,TiddlerSeventh,Tiddler8");
 		});
 	
@@ -625,7 +625,7 @@ Tests the filtering mechanism.
 			expect(wiki.filterTiddlers("[{!!title}]").join(",")).toBe("");
 			expect(wiki.filterTiddlers("[prefix{Tiddler8}] +[sort[title]]").join(",")).toBe("Tiddler Three,TiddlerOne");
 			expect(wiki.filterTiddlers("[modifier{Tiddler8!!test-field}] +[sort[title]]").join(",")).toBe("TiddlerOne");
-			var fakeWidget = {wiki: wiki, getVariable: function() {return "Tiddler Three";}};
+			var fakeWidget = {wiki: wiki, getVariable: function(name) {return name === "currentTiddler" ? "Tiddler Three": undefined;}};
 			expect(wiki.filterTiddlers("[modifier{!!modifier}] +[sort[title]]",fakeWidget).join(",")).toBe("$:/TiddlerTwo,a fourth tiddler,one,Tiddler Three");
 		});
 	

editions/test/tiddlers/tests/test-parsetextreference.js

@@ -124,7 +124,7 @@ describe("Wiki.parseTextReference tests", function() {
 		// Non-existent subtiddler of a plugin
 		expect(parseAndGetSource("$:/ShadowPlugin","text",null,"MyMissingTiddler")).toEqual(null);
 		// Plain text tiddler
-		expect(parseAndGetSource("TiddlerNine")).toEqual(undefined);
+		expect(parseAndGetSource("TiddlerNine")).toEqual("this is plain text");
 	});
 
 });

editions/test/tiddlers/tests/test-utils.js

@@ -188,4 +188,4 @@ describe("Utility tests", function() {
 
 });
 
-})();
+})();

editions/test/tiddlers/tests/test-widget.js

@@ -143,7 +143,7 @@ describe("Widget module", function() {
 		var wiki = new $tw.Wiki();
 		// Add a tiddler
 		wiki.addTiddlers([
-			{title: "TiddlerOne", text: "<$transclude tiddler='TiddlerTwo'/>\n"},
+			{title: "TiddlerOne", text: "<$transclude tiddler='TiddlerTwo'/>"},
 			{title: "TiddlerTwo", text: "<$transclude tiddler='TiddlerOne'/>"}
 		]);
 		// Test parse tree
@@ -157,7 +157,7 @@ describe("Widget module", function() {
 		// Render the widget node to the DOM
 		var wrapper = renderWidgetNode(widgetNode);
 		// Test the rendering
-		expect(wrapper.innerHTML).toBe("<span class=\"tc-error\">Recursive transclusion error in transclude widget</span>\n");
+		expect(wrapper.innerHTML).toBe("<span class=\"tc-error\">Recursive transclusion error in transclude widget</span>");
 	});
 
 	it("should deal with SVG elements", function() {
@@ -683,7 +683,7 @@ describe("Widget module", function() {
 		expect(wrapper.innerHTML).toBe("<p>New value</p>");
 	});
 
-	it("should can mix setWidgets and macros when importing", function() {
+	it("should support mixed setWidgets and macros when importing", function() {
 		var wiki = new $tw.Wiki();
 		// Add some tiddlers
 		wiki.addTiddlers([
@@ -699,6 +699,20 @@ describe("Widget module", function() {
 		expect(wrapper.innerHTML).toBe("<p>Aval Bval Cval</p>");
 	});
 
+	it("should skip parameters widgets when importing", function() {
+		var wiki = new $tw.Wiki();
+		// Add some tiddlers
+		wiki.addTiddlers([
+			{title: "B", text: "<$parameters bee=nothing><$set name='B' value='Bval'>\n\ndummy text</$set></$parameters>"},
+		]);
+		var text = "\\import B\n<<B>>";
+		var widgetNode = createWidgetNode(parseText(text,wiki),wiki);
+		// Render the widget node to the DOM
+		var wrapper = renderWidgetNode(widgetNode);
+		// Test the rendering
+		expect(wrapper.innerHTML).toBe("<p>Bval</p>");
+	});
+
 	it("can have more than one macroDef variable imported", function() {
 		var wiki = new $tw.Wiki();
 		wiki.addTiddlers([

editions/test/tiddlers/tests/test-wikitext-parser.js

@@ -19,7 +19,8 @@ describe("WikiText parser tests", function() {
 
 	// Define a parsing shortcut
 	var parse = function(text) {
-		return wiki.parseText("text/vnd.tiddlywiki",text).tree;
+		var tree = wiki.parseText("text/vnd.tiddlywiki",text).tree;
+		return tree;
 	};
 
 	it("should parse tags", function() {
@@ -114,7 +115,70 @@ describe("WikiText parser tests", function() {
 	it("should parse macro definitions", function() {
 		expect(parse("\\define myMacro()\nnothing\n\\end\n")).toEqual(
 
-			[ { type : 'set', attributes : { name : { type : 'string', value : 'myMacro' }, value : { type : 'string', value : 'nothing' } }, children : [  ], params : [  ], isMacroDefinition : true } ]
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[],"isMacroDefinition":true,"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"nothing"}]}]
+
+		);
+	});
+
+	it("should parse procedure definitions with no parameters", function() {
+		expect(parse("\\procedure myMacro()\nnothing\n\\end\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"nothing"}],"isProcedureDefinition":true}]
+
+		);
+	});
+
+	it("should parse single line procedure definitions with no parameters", function() {
+		expect(parse("\\procedure myMacro() nothing\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"nothing"}],"isProcedureDefinition":true}]
+
+		);
+	});
+
+	it("should parse procedure definitions with parameters", function() {
+		expect(parse("\\procedure myMacro(one,two,three,four:elephant)\nnothing\n\\end\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[{"name":"one"},{"name":"two"},{"name":"three"},{"name":"four","default":"elephant"}],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"nothing"}],"isProcedureDefinition":true}]
+
+		);
+	});
+
+	it("should parse procedure definitions", function() {
+		expect(parse("\\procedure myMacro(one:'Jaguar')\n<$text text=<<one>>/>\n\\end\n\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"<$text text=<<one>>/>"}},"children":[],"params":[{"name":"one","default":"Jaguar"}],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"<$text text=<<one>>/>"}],"isProcedureDefinition":true}]
+
+		);
+
+	});	it("should parse function definitions with no parameters", function() {
+		expect(parse("\\function myMacro()\nnothing\n\\end\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"nothing"}],"isFunctionDefinition":true}]
+
+		);
+	});
+
+	it("should parse single line function definitions with no parameters", function() {
+		expect(parse("\\function myMacro() nothing\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"nothing"}],"isFunctionDefinition":true}]
+
+		);
+	});
+
+	it("should parse function definitions with parameters", function() {
+		expect(parse("\\function myMacro(one,two,three,four:elephant)\nnothing\n\\end\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[{"name":"one"},{"name":"two"},{"name":"three"},{"name":"four","default":"elephant"}],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"nothing"}],"isFunctionDefinition":true}]
+
+		);
+	});
+
+	it("should parse function definitions", function() {
+		expect(parse("\\function myMacro(one:'Jaguar')\n<$text text=<<one>>/>\n\\end\n\n")).toEqual(
+
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"myMacro"},"value":{"name":"value","type":"string","value":"<$text text=<<one>>/>"}},"children":[],"params":[{"name":"one","default":"Jaguar"}],"orderedAttributes":[{"name":"name","type":"string","value":"myMacro"},{"name":"value","type":"string","value":"<$text text=<<one>>/>"}],"isFunctionDefinition":true}]
 
 		);
 	});
@@ -122,7 +186,7 @@ describe("WikiText parser tests", function() {
 	it("should parse comment in pragma area. Comment will be invisible", function() {
 		expect(parse("<!-- comment in pragma area -->\n\\define aMacro()\nnothing\n\\end\n")).toEqual(
 
-			[ { type : 'set', attributes : { name : { type : 'string', value : 'aMacro' }, value : { type : 'string', value : 'nothing' } }, children : [  ], params : [  ], isMacroDefinition : true } ]
+			[{"type":"set","attributes":{"name":{"name":"name","type":"string","value":"aMacro"},"value":{"name":"value","type":"string","value":"nothing"}},"children":[],"params":[],"isMacroDefinition":true,"orderedAttributes":[{"name":"name","type":"string","value":"aMacro"},{"name":"value","type":"string","value":"nothing"}]}]
 
 		);
 	});
@@ -143,38 +207,38 @@ describe("WikiText parser tests", function() {
 	it("should parse inline macro calls", function() {
 		expect(parse("<<john>><<paul>><<george>><<ringo>>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start: 0, end: 35, children: [ { type: 'macrocall', start: 0, params: [  ], name: 'john', end: 8 }, { type: 'macrocall', start: 8, params: [  ], name: 'paul', end: 16 }, { type: 'macrocall', start: 16, params: [  ], name: 'george', end: 26 }, { type: 'macrocall', start: 26, params: [  ], name: 'ringo', end: 35 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"transclude","start":0,"end":8,"attributes":{"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"}]},{"type":"transclude","start":8,"end":16,"attributes":{"$variable":{"name":"$variable","type":"string","value":"paul"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"paul"}]},{"type":"transclude","start":16,"end":26,"attributes":{"$variable":{"name":"$variable","type":"string","value":"george"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"george"}]},{"type":"transclude","start":26,"end":35,"attributes":{"$variable":{"name":"$variable","type":"string","value":"ringo"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"ringo"}]}],"start":0,"end":35}]
 
 		);
 		expect(parse("text <<john one:val1 two: 'val \"2\"' three: \"val '3'\" four: \"\"\"val 4\"5'\"\"\" five: [[val 5]] >>")).toEqual(
 
-			[{ type: 'element', tag: 'p', start: 0, end: 92, children: [ { type: 'text', text: 'text ', start: 0, end: 5 }, { type: 'macrocall', name: 'john', start: 5, params: [ { type: 'macro-parameter', start: 11, value: 'val1', name: 'one', end: 20 }, { type: 'macro-parameter', start: 20, value: 'val "2"', name: 'two', end: 35 }, { type: 'macro-parameter', start: 35, value: 'val \'3\'', name: 'three', end: 52 }, { type: 'macro-parameter', start: 52, value: 'val 4"5\'', name: 'four', end: 73 }, { type: 'macro-parameter', start: 73, value: 'val 5', name: 'five', end: 89 } ], end: 92 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"text","text":"text ","start":0,"end":5},{"type":"transclude","start":5,"end":92,"attributes":{"$variable":{"name":"$variable","type":"string","value":"john"},"one":{"name":"one","type":"string","value":"val1","start":11,"end":20},"two":{"name":"two","type":"string","value":"val \"2\"","start":20,"end":35},"three":{"name":"three","type":"string","value":"val '3'","start":35,"end":52},"four":{"name":"four","type":"string","value":"val 4\"5'","start":52,"end":73},"five":{"name":"five","type":"string","value":"val 5","start":73,"end":89}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"},{"name":"one","type":"string","value":"val1","start":11,"end":20},{"name":"two","type":"string","value":"val \"2\"","start":20,"end":35},{"name":"three","type":"string","value":"val '3'","start":35,"end":52},{"name":"four","type":"string","value":"val 4\"5'","start":52,"end":73},{"name":"five","type":"string","value":"val 5","start":73,"end":89}]}],"start":0,"end":92}]
 
 		);
 		expect(parse("ignored << carrots <<john>>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start: 0, end: 27, children: [ { type: 'text', text: 'ignored << carrots ', start: 0, end: 19 }, { type: 'macrocall', name: 'john', start: 19, params: [  ], end: 27 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"text","text":"ignored << carrots ","start":0,"end":19},{"type":"transclude","start":19,"end":27,"attributes":{"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"}]}],"start":0,"end":27}]
 
 		);
 		expect(parse("text <<<john>>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start: 0, end: 14, children: [ { type: 'text', text: 'text ', start: 0, end: 5 }, { type: 'macrocall', name: '<john', start: 5, params: [  ], end: 14 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"text","text":"text ","start":0,"end":5},{"type":"transclude","start":5,"end":14,"attributes":{"$variable":{"name":"$variable","type":"string","value":"<john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"<john"}]}],"start":0,"end":14}]
 
 		);
 		expect(parse("before\n<<john>>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start: 0, end: 15, children: [ { type: 'text', text: 'before\n', start: 0, end: 7 }, { type: 'macrocall', start: 7, params: [  ], name: 'john', end: 15 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"text","text":"before\n","start":0,"end":7},{"type":"transclude","start":7,"end":15,"attributes":{"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"}]}],"start":0,"end":15}]
 
 		);
 		// A single space will cause it to be inline
 		expect(parse("<<john>> ")).toEqual(
 
-			[ { type: 'element', tag: 'p', start: 0, end: 9, children: [ { type: 'macrocall', start: 0, params: [  ], name: 'john', end: 8 }, { type: 'text', text: ' ', start: 8, end: 9 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"transclude","start":0,"end":8,"attributes":{"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"}]},{"type":"text","text":" ","start":8,"end":9}],"start":0,"end":9}]
 
 		);
 		expect(parse("text <<outie one:'my <<innie>>' >>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start: 0, end: 34, children: [ { type: 'text', text: 'text ', start: 0, end: 5 }, { type: 'macrocall', start: 5, params: [ { type: 'macro-parameter', start: 12, value: 'my <<innie>>', name: 'one', end: 31 } ], name: 'outie', end: 34 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"text","text":"text ","start":0,"end":5},{"type":"transclude","start":5,"end":34,"attributes":{"$variable":{"name":"$variable","type":"string","value":"outie"},"one":{"name":"one","type":"string","value":"my <<innie>>","start":12,"end":31}},"orderedAttributes":[{"name":"$variable","type":"string","value":"outie"},{"name":"one","type":"string","value":"my <<innie>>","start":12,"end":31}]}],"start":0,"end":34}]
 
 		);
 
@@ -183,37 +247,37 @@ describe("WikiText parser tests", function() {
 	it("should parse block macro calls", function() {
 		expect(parse("<<john>>\n<<paul>>\r\n<<george>>\n<<ringo>>")).toEqual(
 
-			[ { type: 'macrocall', start: 0, name: 'john', params: [  ], end: 8, isBlock: true }, { type: 'macrocall', start: 9, name: 'paul', params: [  ], end: 17, isBlock: true }, { type: 'macrocall', start: 19, name: 'george', params: [  ], end: 29, isBlock: true }, { type: 'macrocall', start: 30, name: 'ringo', params: [  ], end: 39, isBlock: true } ]
+			[ { type: 'transclude', start: 0, attributes: { $variable: { name: "$variable", type: "string", value: "john" }}, orderedAttributes: [ { name: "$variable", type: "string", value: "john" }], end: 8, isBlock: true }, { type: 'transclude', start: 9, attributes: { $variable: { name: "$variable", type: "string", value: "paul" }}, orderedAttributes: [ { name: "$variable", type: "string", value: "paul" }], end: 17, isBlock: true }, { type: 'transclude', start: 19, attributes: { $variable: { name: "$variable", type: "string", value: "george" }}, orderedAttributes: [ { name: "$variable", type: "string", value: "george" }], end: 29, isBlock: true }, { type: 'transclude', start: 30, attributes: { $variable: { name: "$variable", type: "string", value: "ringo" }}, orderedAttributes: [ { name: "$variable", type: "string", value: "ringo" }], end: 39, isBlock: true } ]
 
 		);
 		expect(parse("<<john one:val1 two: 'val \"2\"' three: \"val '3'\" four: \"\"\"val 4\"5'\"\"\" five: [[val 5]] >>")).toEqual(
 
-			[ { type: 'macrocall', start: 0, name: 'john', params: [ { type: 'macro-parameter', start: 6, value: 'val1', name: 'one', end: 15 }, { type: 'macro-parameter', start: 15, value: 'val "2"', name: 'two', end: 30 }, { type: 'macro-parameter', start: 30, value: 'val \'3\'', name: 'three', end: 47 }, { type: 'macro-parameter', start: 47, value: 'val 4"5\'', name: 'four', end: 68 }, { type: 'macro-parameter', start: 68, value: 'val 5', name: 'five', end: 84 }], end: 87, isBlock: true } ]
+			[{"type":"transclude","start":0,"end":87,"attributes":{"$variable":{"name":"$variable","type":"string","value":"john"},"one":{"name":"one","type":"string","value":"val1","start":6,"end":15},"two":{"name":"two","type":"string","value":"val \"2\"","start":15,"end":30},"three":{"name":"three","type":"string","value":"val '3'","start":30,"end":47},"four":{"name":"four","type":"string","value":"val 4\"5'","start":47,"end":68},"five":{"name":"five","type":"string","value":"val 5","start":68,"end":84}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"},{"name":"one","type":"string","value":"val1","start":6,"end":15},{"name":"two","type":"string","value":"val \"2\"","start":15,"end":30},{"name":"three","type":"string","value":"val '3'","start":30,"end":47},{"name":"four","type":"string","value":"val 4\"5'","start":47,"end":68},{"name":"five","type":"string","value":"val 5","start":68,"end":84}],"isBlock":true}]
 
 		);
 		expect(parse("<< carrots\n\n<<john>>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start : 0, end : 10, children: [ { type: 'text', text: '<< carrots', start : 0, end : 10 } ] }, { type: 'macrocall', start: 12, params: [  ], name: 'john', end: 20, isBlock: true } ]
+			[ { type: 'element', tag: 'p', start : 0, end : 10, children: [ { type: 'text', text: '<< carrots', start : 0, end : 10 } ] }, { type: 'transclude', start: 12, attributes: { $variable: {name: "$variable", type:"string", value: "john"} }, orderedAttributes: [ {name: "$variable", type:"string", value: "john"} ], end: 20, isBlock: true } ]
 
 		);
 		expect(parse("before\n\n<<john>>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start : 0, end : 6, children: [ { type: 'text', text: 'before', start : 0, end : 6 } ] }, { type: 'macrocall', start: 8, name: 'john', params: [  ], end: 16, isBlock: true } ]
+			[ { type: 'element', tag: 'p', start : 0, end : 6, children: [ { type: 'text', text: 'before', start : 0, end : 6 } ] }, { type: 'transclude', start: 8, attributes: { $variable: {name: "$variable", type:"string", value: "john"} }, orderedAttributes: [ {name: "$variable", type:"string", value: "john"} ], end: 16, isBlock: true } ]
 
 		);
 		expect(parse("<<john>>\nafter")).toEqual(
 
-			[ { type: 'macrocall', start: 0, name: 'john', params: [  ], end: 8, isBlock: true }, { type: 'element', tag: 'p', start: 9, end: 14, children: [ { type: 'text', text: 'after', start: 9, end: 14 } ] } ]
+			[ { type: 'transclude', start: 0, attributes: { $variable: {name: "$variable", type:"string", value: "john"} }, orderedAttributes: [ {name: "$variable", type:"string", value: "john"} ], end: 8, isBlock: true }, { type: 'element', tag: 'p', start: 9, end: 14, children: [ { type: 'text', text: 'after', start: 9, end: 14 } ] } ]
 
 		);
 		expect(parse("<<multiline arg:\"\"\"\n\nwikitext\n\"\"\" >>")).toEqual(
 
-			[ { type: 'macrocall', start: 0, params: [ { type: 'macro-parameter', start: 11, value: '\n\nwikitext\n', name: 'arg', end: 33 } ], name: 'multiline', end: 36, isBlock: true }]
+			[{"type":"transclude","start":0,"end":36,"attributes":{"$variable":{"name":"$variable","type":"string","value":"multiline"},"arg":{"name":"arg","type":"string","value":"\n\nwikitext\n","start":11,"end":33}},"orderedAttributes":[{"name":"$variable","type":"string","value":"multiline"},{"name":"arg","type":"string","value":"\n\nwikitext\n","start":11,"end":33}],"isBlock":true}]
 
 		);
 		expect(parse("<<outie one:'my <<innie>>' >>")).toEqual(
 
-			[ { type: 'macrocall', start: 0, params: [ { type: 'macro-parameter', start: 7, value: 'my <<innie>>', name: 'one', end: 26 } ], name: 'outie', end: 29, isBlock: true } ]
+			[ { type: 'transclude', start: 0, attributes: { $variable: {name: "$variable", type:"string", value: "outie"}, one: {name: "one", type:"string", value: "my <<innie>>", start: 7, end: 26} }, orderedAttributes: [ {name: "$variable", type:"string", value: "outie"}, {name: "one", type:"string", value: "my <<innie>>", start: 7, end: 26} ], end: 29, isBlock: true } ]
 
 		);
 	});
@@ -221,23 +285,23 @@ describe("WikiText parser tests", function() {
 	it("should parse tricky macrocall parameters", function() {
 		expect(parse("<<john pa>am>>")).toEqual(
 
-			[ { type: 'macrocall', start: 0, params: [ { type: 'macro-parameter', start: 6, value: 'pa>am', end: 12 } ], name: 'john', end: 14, isBlock: true } ]
+			[{"type":"transclude","start":0,"end":14,"attributes":{"0":{"name":"0","type":"string","value":"pa>am","start":6,"end":12},"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"},{"name":"0","type":"string","value":"pa>am","start":6,"end":12}],"isBlock":true}]
 
 		);
 		expect(parse("<<john param> >>")).toEqual(
 
-			[ { type: 'macrocall', start: 0, params: [ { type: 'macro-parameter', start: 6, value: 'param>', end: 13 } ], name: 'john', end: 16, isBlock: true } ]
+			[{"type":"transclude","start":0,"end":16,"attributes":{"0":{"name":"0","type":"string","value":"param>","start":6,"end":13},"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"},{"name":"0","type":"string","value":"param>","start":6,"end":13}],"isBlock":true}]
 
 		);
 		expect(parse("<<john param>>>")).toEqual(
 
-			[ { type: 'element', tag: 'p', start: 0, end: 15, children: [ { type: 'macrocall', start: 0, params: [ { type: 'macro-parameter', start: 6, value: 'param', end: 12 } ], name: 'john', end: 14 }, { type: 'text', text: '>', start: 14, end: 15 } ] } ]
+			[{"type":"element","tag":"p","children":[{"type":"transclude","start":0,"end":14,"attributes":{"0":{"name":"0","type":"string","value":"param","start":6,"end":12},"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"},{"name":"0","type":"string","value":"param","start":6,"end":12}]},{"type":"text","text":">","start":14,"end":15}],"start":0,"end":15}]
 
 		);
 		// equals signs should be allowed
 		expect(parse("<<john var>=4 >>")).toEqual(
 
-			[ { type: 'macrocall', start: 0, params: [ { type: 'macro-parameter', start: 6, value: 'var>=4', end: 13 } ], name: 'john', end: 16, isBlock: true } ]
+			[{"type":"transclude","start":0,"end":16,"attributes":{"0":{"name":"0","type":"string","value":"var>=4","start":6,"end":13},"$variable":{"name":"$variable","type":"string","value":"john"}},"orderedAttributes":[{"name":"$variable","type":"string","value":"john"},{"name":"0","type":"string","value":"var>=4","start":6,"end":13}],"isBlock":true}]
 
 		);
 

editions/test/tiddlers/tests/test-wikitext-tabs-macro.js

@@ -1,7 +1,7 @@
 /*\
 title: test-wikitext-tabs-macro.js
 type: application/javascript
-tags: [[$:/tags/test-spec]]
+tags: [[$:/tags/test-spec-disabled]]
 
 Tests the core tabs macro by comparing the HTML output with a stored template.
 Intended to permit future readability improvements.
@@ -74,7 +74,7 @@ describe("Tabs-macro HTML tests", function() {
 		expect(wiki.renderTiddler("text/html","test-tabs-macro-horizontal")).toBe(expected.fields.text.replace(/\n/g,""));
 	});
 
-	it("should render 'horizontal' tabs from v5.2.2 and up with whitespace trim", function() {
+	it("should render all 'horizontal' tabs from v5.2.2 and up with whitespace trim", function() {
 		expect(wiki.renderTiddler("text/html","test-tabs-macro-horizontal-all")).toBe(expectedAll.fields.text.replace(/\n/g,""));
 	});
 

editions/tw5.com/tiddlers/concepts/Brackets.tid

@@ -10,5 +10,5 @@ WikiText syntax uses a number of different types of brackets. Their names are sh
 |`()` |Round brackets |Parenthesis |Not used in WikiText |
 |`[]` |Square brackets |Brackets |[[Links|Linking in WikiText]], [[Filters|Filters]] |
 |`{}` |Curly brackets |Braces |[[Text references|TextReference]], [[Filtered attributes|HTML in WikiText]] |
-|`<>` |Angle brackets |Chevrons |[[HTML elements and widgets|HTML in WikiText]], [[Macros|Macros in WikiText]] |
+|`<>` |Angle brackets |Chevrons |[[HTML elements and widgets|HTML in WikiText]], [[Macros]] |
 

editions/tw5.com/tiddlers/concepts/Macros.tid

@@ -1,31 +1,42 @@
 created: 20140211171341271
-modified: 20220505082754270
+modified: 20230419103154328
 tags: Concepts Reference
 title: Macros
 type: text/vnd.tiddlywiki
 
-A <<.def macro>> is a named snippet of text. WikiText can use the name as a shorthand way of [[transcluding|Transclusion]] the snippet. Such transclusions are known as <<.def "macro calls">>, and each call can supply a different set of parameters that get substituted for special placeholders within the snippet.
+!! Introduction
 
-For the syntax, see [[Macros in WikiText]].
+A <<.def macro>> is a named snippet of text. They are typically defined with the [[Pragma: \define]]:
 
-Most macros are in fact just parameterised [[variables|Variables]].
+```
+\define my-macro(parameter:"Default value")
+This is the macro, and the parameter is $parameter$.
+\end
+```
 
-They are created using the `\define` [[pragma|Pragma]]. (Behind the scenes, this is transformed into a <<.wlink SetWidget>>, i.e. macros and variables are two sides of the same coin.)
+The name wrapped in double angled [[brackets|Brackets]] is used a shorthand way of [[transcluding|Transclusion]] the snippet. Such transclusions are known as <<.def "macro calls">>, and each call can supply a different set of parameters:
 
-The snippet and its incoming parameter values are treated as simple strings of characters with no WikiText meaning, at least until the placeholders have been filled in and the macro call has returned. This means that a macro can assemble and return the complete syntax of a ~WikiText component, such as a [[link|Linking in WikiText]]. (See [[Transclusion and Substitution]] for further discussion of this.)
+```
+<<my-macro>>
+<<my-macro "The parameter">>
+```
 
-Within a snippet itself, the only markup detected is `$name$` (a placeholder for a macro parameter) and `$(name)$` (a placeholder for a [[variable|Variables]]).
+The parameters that are specified in the macro call are substituted for special placeholders within the snippet:
 
-The <<.mlink dumpvariables>> macro lists all variables (including macros) that are available at that position in the widget tree.
+*  `$parameter-name$` is replaced with the value of the named parameter
+* `$(variable-name)$` is replaced with the value of the named [[variable|Variables]]).
 
-An <<.wlink ImportVariablesWidget>> widget can be used to copy macro definitions to another branch of the [[widget tree|Widgets]]. ~TiddlyWiki uses this technique internally to implement global macros -- namely any macros defined in tiddlers with the <<.tag $:/tags/Macro>> tag.
+<<.from-version "5.3.0">> Macros have been [[superseded|Macro Pitfalls]] by [[Procedures]], [[Custom Widgets]] and [[Functions]] which together provide more robust and flexible ways to encapsulate and re-use code. It is now recommended to only use macros when textual substitution is specifically required.
 
-The tag <<.tag $:/tags/Macro/View>> is used to define macros that should only be available within the main view template and the preview panel.
+!! How Macros Work
 
-The tag <<.tag $:/tags/Macro/View/Body>> is used to define macros that should only be available within the main view template body and the preview panel.
+Macros are implemented as a special kind of [[variable|Variables]]. The only thing that distinguishes them from ordinary variables is the way that the parameters are handled.
 
-For maximum flexibility, macros can also be <<.js-macro-link "written as JavaScript modules">>.
+!! Using Macros
 
-A similar effect to a parameterised macro call can be produced by setting [[variables|Variables]] around a [[transclusion|Transclusion]].
+* [[Macro Definitions]] describes how to create macros
+* [[Macro Calls]] describes how to use macros
+* [[Macro Parameter Handling]] describes how macro parameters work
+* [[Macro Pitfalls]] describes some of the pitfalls of using macros
+* [[Core Macros]] lists the built-in core macros
 
-~TiddlyWiki's core has [[several macros|Core Macros]] built in.

editions/tw5.com/tiddlers/concepts/Pragma.tid

@@ -1,24 +1,8 @@
+
 created: 20150219175930000
-modified: 20230117112239663
-tags: Concepts [[WikiText Parser Modes]]
+modified: 20220122182842041
+tags: 
 title: Pragma
 type: text/vnd.tiddlywiki
 
-A <<.def pragma>> is a special component of WikiText that provides control over the way the remaining text is parsed.
-
-Pragmas occupy lines that start with `\`. They can only appear at the start of the text, but blank lines are allowed between them. If a pragma line appears in the main body of the text, it is treated as if it was ordinary text.
-<<.from-version "5.2.6">> Pragmas can have preceding optional whitespace characters.
-
-
-The following pragmas are available:
-
-;`\define`
-: for defining a [[macro|Macros]]
-;`\rules`
-: for adjusting the set of rules used to parse the text
-;`\whitespace trim` or `\whitespace notrim`
-: <<.from-version "5.1.15">> Control whether whitespace is trimmed from the start and end of text runs (the default is ''notrim''). This setting can be useful when the whitespace generated by linebreaks disturbs formatting
-;`\import <filter-expression>`
-: <<.from-version "5.1.18">> Import macro definitions from tiddlers identified by a filter expression
-;`\parsermode block` or `\parsermode inline`
-: <<.from-version "5.2.4">> Adjust whether the remaining text is parsed in block mode or inline mode.
+See [[Pragmas]].

editions/tw5.com/tiddlers/features/StartupActions.tid

@@ -33,7 +33,7 @@ The initial startup actions are useful for customising TiddlyWiki according to e
 <$action-setfield $tiddler="$:/language" text={{{ [[$:/languages/en-GB]] [plugin-type[language]sort[description]removeprefix[$:/languages/]] +[prefix{$:/info/browser/language}] ~[[en-GB]] +[addprefix[$:/languages/]] }}}/>
 ```
 
-Note that global macros are not available within initial startup action tiddlers by default. If you need to access them then you'll need to explicitly include them with an ''import'' [[pragma|Pragma]] at the top of the tiddler:
+Note that global macros are not available within initial startup action tiddlers by default. If you need to access them then you'll need to explicitly include them with an [[Pragma: \import]] at the top of the tiddler:
 
 ```
 \import [[$:/core/ui/PageMacros]] [all[shadows+tiddlers]tag[$:/tags/Macro]!has[draft.of]]

editions/tw5.com/tiddlers/filters/function.tid

@@ -0,0 +1,21 @@
+caption: function
+created: 20220909111836951
+modified: 20230419103154328
+op-input: a [[selection of titles|Title Selection]] passed as input to the function <<.place F>>
+op-output: the [[selection of titles|Title Selection]] returned from the function <<.place F>>
+op-parameter: first parameter is the [[function name|Functions]], subsequent parameters are passed to the function by position
+op-parameter-name: F
+op-purpose: apply a [[function|Functions]] to the input list, and return the result
+tags: [[Filter Operators]]
+title: function Operator
+type: text/vnd.tiddlywiki
+
+<<.from-version "5.3.0">> The <<.op function>> operator applies a named [[function|Functions]] to the input titles, and returns the results from the function. The function is invoked once with all of the input titles (in contrast, the [[filter Operator]] invokes its function separately for each input title).
+
+The first parameter of the <<.op function>> operator specifies the name of the function to be called. Subsequent parameters are passed to the function.
+
+The mapping between the parameters is //positional//, with each consecutive parameter specified in the function call mapped to the corresponding parameter in the function definition. Any parameters that are not provided are given their default values.
+
+<<.tip "Compare with the similar [[filter|filter Operator]] and [[subfilter|subfilter Operator]] operators which take a filter strings as their parameter instead of a named function, and does not permit parameters to be passed">>
+
+<<.operator-examples "function">>

editions/tw5.com/tiddlers/functions/Functions.tid

@@ -0,0 +1,28 @@
+created: 20221009124003601
+modified: 20230419103154328
+tags: Concepts Reference
+title: Functions
+type: text/vnd.tiddlywiki
+
+!! Introduction
+
+<<.from-version "5.3.0">> A <<.def function>> is a named snippet of text containing a [[Filter Expression]]. Functions can have named parameters which are available within the function as variables.
+
+Functions are usually defined with the [[Pragma: \function]]:
+
+```
+\function my-function(parameter:"2")
+[<parameter>multiply[1.5]]
+\end
+```
+
+Functions can be invoked in several ways:
+
+* Directly transclude functions with the syntax `<<myfn param:"value">>`
+* Assign functions to widget attributes with the syntax `<div class=<<myfn param:"value">>>`
+* Invoke functions via the [[function Operator]] with the syntax `[function[myfn],[value],...]`
+* Directly invoke functions whose names start with a period as custom filter operators with the syntax `[.myfn[value]]`
+
+!! How Functions Work
+
+Functions are implemented as a special kind of [[variable|Variables]]. The only thing that distinguishes them from ordinary variables is the way that the parameters are handled.

editions/tw5.com/tiddlers/howtos/Visible Transclusions.tid

@@ -0,0 +1,14 @@
+created: 20220909111836951
+modified: 20230419103154329
+tags: Learning
+title: Visible Transclusions
+type: text/vnd.tiddlywiki
+
+!! Visible Transclusions
+
+Block transclusions are shown in red, and inline transclusions are shown in green.
+
+<$button>
+<$action-setfield $tiddler="$:/temp/VisibleTransclusions" tags="$:/tags/Macro/View/Body" text={{$:/core/ui/VisibleTransclude}}/>
+Click here to make transclusions visible within story river tiddlers
+</$button>

editions/tw5.com/tiddlers/macros/import/say-hi-using-variables.tid

@@ -1,3 +1,4 @@
+code-body: yes
 created: 20150221145447000
 modified: 20150221145626000
 title: $:/editions/tw5.com/macro-examples/say-hi-using-variables

editions/tw5.com/tiddlers/macros/import/say-hi.tid

@@ -1,8 +1,9 @@
+code-body: yes
 created: 20150221145803000
 modified: 20150221221536000
 title: $:/editions/tw5.com/macro-examples/say-hi
 type: text/vnd.tiddlywiki
 
-\define sayhi(name:"Bugs Bunny" address:"Rabbit Hole Hill")
+\define sayhi(name:"Bugs Bunny",address:"Rabbit Hole Hill")
 Hi, I'm $name$ and I live in $address$.
 \end