add getvariablejson and a test tiddler, to see if getvariblejson is of any use

core/modules/filters/getvariablejson.js

@@ -0,0 +1,31 @@
+/*\
+title: $:/core/modules/filters/getvariablejson.js
+type: application/javascript
+module-type: filteroperator
+
+Filter operator for replacing input values by the value of the variable with the same name, or blank if the variable is missing
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Export our filter function
+*/
+exports.getvariablejson = function(source,operator,options) {
+	var results = [],
+		space = operator.operands[1] || null,
+		replacerList = (operator.operands[2]) ? operator.operands[2].split(" ") : null,
+		widget = options.widget;
+	source(function(tiddler,title) {
+		var variable = widget.getVariableInfo(title, {}),
+		text = JSON.stringify(variable,replacerList,space);
+		results.push(text || "");
+	});
+	return results;
+};
+
+})();

editions/tw5.com/tiddlers/test-getvariablejson.tid

@@ -0,0 +1,27 @@
+created: 20240506064659892
+modified: 20240506100851338
+tags: 
+title: test-getvariablejson
+type: text/vnd.tiddlywiki
+
+\define test-macro(a:10) test macro
+
+\procedure test-proc(a:10) test proc
+
+\function my.test(x:3, abc:def) [<test-proc>split[ ]]
+
+
+\define elements() srcVariable params name default
+\define openBracket() [
+\define closeBracket() ]
+
+
+<<.example 1 """\procedure test-proc(a:10) test proc
+\function my.test(x:3, abc:def) [<test-proc>split[ ]]
+\function tab() [charcode[9]]
+
+<pre><$text text={{{[[my.test]getvariablejson[],<tab>]}}}/></pre>
+""">>
+
+<<.example 2 """<pre><$text text={{{[[my.test]getvariablejson[],<tab>] +[jsonextract[srcVariable],[params]] +[format:json<tab>]  }}}/></pre>""">>
+