mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-06-16 02:19:55 +00:00
Merge remote-tracking branch 'upstream/master'
This commit is contained in:
Bram Chen
commit
5822954eb7
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@ -75,14 +75,14 @@ function SaverHandler(options) {
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}
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});
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// Set up our beforeunload handler
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window.addEventListener("beforeunload",function(event) {
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window.onbeforeunload = function(event) {
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var confirmationMessage;
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if(self.isDirty()) {
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confirmationMessage = $tw.language.getString("UnsavedChangesWarning");
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event.returnValue = confirmationMessage; // Gecko
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}
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return confirmationMessage;
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});
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};
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}
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// Install the save action handlers
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if($tw.browser) {
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@ -39,14 +39,14 @@ function Syncer(options) {
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// Browser event handlers
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if($tw.browser) {
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// Set up our beforeunload handler
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window.addEventListener("beforeunload",function(event) {
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window.onbeforeunload = function(event) {
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var confirmationMessage;
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if(self.isDirty()) {
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confirmationMessage = $tw.language.getString("UnsavedChangesWarning");
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event.returnValue = confirmationMessage; // Gecko
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}
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return confirmationMessage;
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});
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};
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// Listen out for login/logout/refresh events in the browser
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$tw.rootWidget.addEventListener("tm-login",function() {
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self.handleLoginEvent();
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@ -1,18 +1,17 @@
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created: 20140211171341271
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modified: 20140910215504098
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modified: 20150107121000000
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tags: Concepts Reference
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title: Macros
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type: text/vnd.tiddlywiki
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Macros are snippets of text that can be inserted with a concise shortcut:
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Macros are snippets of text, inserted with the following shortcut syntax:
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```
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<<myMacro>>
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```
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You can write your own [[Macros in WikiText]] or for more flexibility you can write [[JavaScript Macros|http://tiddlywiki.com/dev/index.html#JavaScript%20Macros]].
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You can define and use [[Macros in WikiText]] or write [[JavaScript Macros|http://tiddlywiki.com/dev/index.html#JavaScript%20Macros]] for more flexibility.
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The following macros are built-in to the TiddlyWiki core:
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<<list-links "[tag[Macros]]">>
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The following macros are provided by the TiddlyWiki core:
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<<list-links "[tag[Macros]]">>
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@ -1,28 +1,20 @@
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created: 20140908104107181
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modified: 20140908104107181
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modified: 20150107121000000
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tags: Macros
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title: DumpVariablesMacro
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type: text/vnd.tiddlywiki
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caption: dumpvariables
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The dumpvariables macro displays a table containing the values of all the variables defined at that location in the widget tree. It can be useful for exploring the mechanisms of TiddlyWiki and for debugging.
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The ''dumpvariables'' [[macro|Macros]] displays a table with values of all [[variables|Variables]] that are defined in the current scope. It is useful for debugging and exploring TiddlyWiki internals.
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! Parameters
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The dumpvariables macro does not require any parameters
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! Examples
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''Note:'' Parameters and variable subsitutions for macros are displayed as empty strings. A macro defined as `\define myMacro(text) ''$text$''` thus displays as `''''`.
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!! Example
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```
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<<dumpvariables>>
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```
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Returns:
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<<dumpvariables>>
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The results returned by the dumpvariables macro will depend upon where it is used.
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Note that the values displayed for macros are displayed with all the parameters and variable subsitutions set to an empty string. So, a macro defined as `\define myMacro(text) ''$text$''` will display as `''''`.
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Renders as:
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<<dumpvariables>>
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@ -1,15 +1,13 @@
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created: 20141002133113496
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modified: 20141002230631361
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modified: 20150107121000000
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tags: Reference
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title: Variables
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type: text/vnd.tiddlywiki
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Variables together with [[Widgets]] and [[Macros]] are essential for dynamic WikiText.
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[[Variables]] are an essential component of dynamic WikiText, as are [[Widgets]] and [[Macros]]. In fact, a variable is a shorthand of a macro.
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You can define your own [[Variables in WikiText]] or use built-in variables.
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More detailed information of built-in variables could be found in below:
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You can define custom [[Variables in WikiText]] or use one of the standard variables...
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<<list-links "[tag[Variables]]">>
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See also DumpVariablesMacro
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The [[<<dumpvariables>>|DumpVariablesMacro]] macro lists all variables defined in the current scope, allowing you to see and edit their values.
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@ -1,22 +1,41 @@
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caption: currentTiddler
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created: 20141001232824187
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modified: 20141002161518301
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modified: 20150107121000000
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tags: Variables
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title: WidgetVariable: currentTiddler
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type: text/vnd.tiddlywiki
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! Mechanism
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The ''currentTiddler'' [[variable|Variables]] contains the title of the current tiddler.
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The ''currentTiddler'' variable contains the title of the current tiddler.
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!! Usage
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The ListWidget assigns the list result to the ''currentTiddler'' variable, unless the `variable` attribute is specified.
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Various [[Widgets]] and [[Macros]] are by default applied with respect to the tiddler referenced via ''currentTiddler''. Within the [[ListWidget]] or TemplateTiddlers you are thus often not required to specify the tiddler title.
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A couple of [[Widgets]] and [[Macros]] by default apply to the tiddler according to the ''currentTiddler'' variable.
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The following two examples are thus equivalent...
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The TranscludeWidget (or WikiText `{{||TemplateTitle}}`) transcludes a tiddler without changing the ''currentTiddler'' variable.
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* `<$view field=title/>`
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* `<$view field=title tiddler=<<currentTiddler>>/>`
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! Using currentTiddler Variable
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;TranscludeWidget
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: when [[transcluding|Transclusion]] a tiddler, ''currentTiddler'' is set to the tiddler being transcluded,
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: e.g. when using the [[WikiText shorthand|Transclusion in WikiText]]: `{{||TemplateTiddlerTitle}}`
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; ListWidget
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: overrides the ''currentTiddler'' variable with the currently iterated list-item,
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: unless a custom `variable` attribute is specified
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; TiddlerWidget
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: sets the ''currentTiddler'' variable for its inner scope
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These mechanisms together allow you to write references like `<$view field="title" format="link"/>` in TemplateTiddlers or inside the ListWidget hierarchy without explicitly specifying the tiddler that it applies to.
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!! Example
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See also [[WidgetVariable: storyTiddler]] and [[WidgetVariable: currentTiddler]]
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```
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<$view tiddler=<<currentTiddler>> field=title/>
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```
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<<<
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<$view tiddler=<<currentTiddler>> field=title/>
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<<<
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!! Other Standard Variables
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* [[WidgetVariable: storyTiddler]]
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* [[WidgetVariable: transclusion]]
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@ -1,10 +1,23 @@
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caption: storyTiddler
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created: 20141001232753952
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modified: 20141002133957245
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modified: 20150107121000000
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tags: Variables
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title: WidgetVariable: storyTiddler
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type: text/vnd.tiddlywiki
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The ''storyTiddler'' variable is set by the [[default viewtemplate|$:/core/ui/ViewTemplate]] to the name of the current tiddler within tiddlers in the story river, and is not defined within the sidebar.
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The ''storyTiddler'' [[variable|Variables]] is set by the [[default view-template|$:/core/ui/ViewTemplate]] to the title of the tiddler in the story river. It is therefore undefined in elements like the ''sidebar''.
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See also [[WidgetVariable: currentTiddler]]
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!! Example
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```
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<$view tiddler=<<storyTiddler>> field=title/>
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```
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<<<
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<$view tiddler=<<storyTiddler>> field=title/>
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<<<
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!! Other Standard Variables
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* [[WidgetVariable: currentTiddler]]
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* [[WidgetVariable: transclusion]]
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@ -1,36 +1,46 @@
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caption: transclusion
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created: 20141002004621385
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modified: 20141002162057822
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modified: 20150107121000000
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tags: Variables
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title: WidgetVariable: transclusion
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type: text/vnd.tiddlywiki
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! Mechanism
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The ''transclusion'' variable is set automatically by the transclude widget to contain a string that identifies the position of the current node within the widget tree. In the sidebar it is set to `{|$:/core/ui/PageTemplate/sidebar|||}` and within the tiddler "HelloThere" in the story river it is set to `{HelloThere|HelloThere|||}`. Each nested level of transclusion appends another curly bracketed list of symbols.
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The ''transclusion'' [[variable|Variables]] is automatically set by the TranscludeWidget to contain a string identifying the position of the current node within the widget tree.
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The QualifyMacro uses the ''transclusion'' variable to identify the stack of transcluded tiddlers.
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With the ''transclusion'' variable, the QualifyMacro identifies the stack of transcluded tiddlers.
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! Example
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In the sidebar, the ''transclusion'' variable is set to:<br>
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`{|$:/core/ui/PageTemplate/sidebar|||}`
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When the tiddler "HelloThere" is displayed in the story river ''transclusion'' is set to:<br> `{HelloThere|HelloThere|||}`
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Each nested level of transclusion appends another curly bracketed list of symbols.
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!! Example
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''identifying if we're in the sidebar or not''
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```
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\define mymacro()
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Hello from mymacro
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<$list filter="[<transclusion>prefix[{|$:/core/ui/PageTemplate/sidebar|||}]]" emptyMessage="in a tiddler">
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in the sidebar
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We are
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<$list
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filter="[<transclusion>prefix[{|$:/core/ui/PageTemplate/sidebar|||}]]"
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emptyMessage="in the story river.">
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in the sidebar.
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</$list>
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\end
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<<mymacro>>
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```
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Result in story tiddler
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Result in a story tiddler:
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```
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Hello from mymacro in a tiddler
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```
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<<<
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We are in the story river.
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<<<
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Result in the sidebar
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Result in the sidebar:
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```
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Hello from mymacro in the sidebar
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```
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<<<
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We are in the sidebar.
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<<<
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@ -1,28 +1,79 @@
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caption: Variables
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created: 20141002141231992
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modified: 20141018104313995
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modified: 20150107121000000
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tags: WikiText
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title: Variables in WikiText
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type: text/vnd.tiddlywiki
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! Defining Variables
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Variables contains values defined by [[Widgets]].
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Variables are available within the widget that defines them, and the child widgets in the widget tree.
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\define tags() {{!!tags}}
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Variables are defined by:
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[[Variables]] contain values. They are available within the scope of the [[widget|Widgets]] in which they are defined, as well as all child widgets in the widget tree.
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* TiddlyWiki core and viewtemplate
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* SetWidget
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* ListWidget
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* [[Macro definition|Macros in WikiText]]
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!!Defining Variables
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! Using Variables
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Variables are defined by...
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Variables are used in:
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; [[Macros|Macros in WikiText]]
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: in fact, variables are macro shorthands (see example below)
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; SetWidget
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: sets a variable to a value
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; ListWidget
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: sets list-item and iterator variabes
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; TiddlyWiki
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: in the core and core templates
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* Variable substitution `$(name)$`
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* Concise shortcut `<<name>>`
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* [[Filter expression|Introduction to Filters]] `[operator<variable-operand>]`
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* Some default behaviors of [[Widgets]]
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!!Using Variables
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See also [[currentTiddler|WidgetVariable: currentTiddler]] variable, built-in [[variables|Variables]] and [[Confusion between Transclusion and Substitution]].
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Variables are used via...
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; shorthand
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:`<<variableName>>`
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; variable substitution within [[macros|Macros]]
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:`$(variableName)$`
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; as variable operands in [[filter expressions|Introduction to Filters]]
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: `[operator<variableName>]`
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; in [[widgets|Widgets]]
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: internally, or as widget attributes
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: `<$edit tiddler=<<currentTiddler>>/>`
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!! Examples
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''defining a variable via SetWidget''
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```
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<$set name=foo value=bar>
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<<foo>>
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</$set>
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```
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<<<
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<$set name=foo value=bar>
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<<foo>>
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</$set>
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<<<
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''a variable is a macro''
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Below, the `\define` pragma at the beginning of a tiddler [[defines the macro|Macros in WikiText]] `<<tags>>`, valid in the scope of the CurrentTiddler, returning the value of the standard `tags` field.
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```
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\define tags() {{!!tags}}
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<<tags>>
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```
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<<<
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<<tags>>
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<<<
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''using a filter variable to get all incoming links''
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Using the [[backlinks|FilterOperator: backlinks]] [[filter operator|FilterOperators]] to get all tiddlers linking to this one...
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|
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```
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<<list-links filter:"[<currentTiddler>backlinks[]]">>
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```
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<<<
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<<list-links filter:"[<currentTiddler>backlinks[]]">>
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<<<
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