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https://github.com/Jermolene/TiddlyWiki5
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98af893443
Thanks @kookma (see https://github.com/Jermolene/TiddlyWiki5/pull/6666#issuecomment-1514860999)
44 lines
1.5 KiB
Plaintext
44 lines
1.5 KiB
Plaintext
created: 20221007125701001
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modified: 20230419103154329
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tags: WikiText Procedures
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title: Procedure Definitions
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type: text/vnd.tiddlywiki
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!! Introduction
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This tiddler describes the different ways in which [[macros|Procedures]] can be defined.
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!! Procedure Definition Pragma
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Macros are created using the [[Pragma: \procedure]] at the start of a tiddler. The definitions are available in the rest of the tiddler that defines them, plus any tiddlers that it transcludes.
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```
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\define my-procedure(param)
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This is the macro text (param=<<param>>)
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\end
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```
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!! Procedure Definition with Set Widget
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Procedures are implemented as a special kind of [[variable|Variables]] and so internally are actually defined with a <<.wlink SetWidget>> widget.
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```
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<$set name="my-procedure" value="This is the procedure text">
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...
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</$set>
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```
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<<.note """that it is not currently possible to specify parameters when defining a procedure with the <<.wlink SetWidget>> widget.""">>
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!! Importing Procedure Definitions
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The [[Pragma: \import]] or <<.wlink ImportVariablesWidget>> widget can be used to copy procedure definitions from another tiddler.
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!! `$:/tags/Macro` Tag
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Global procedures can be defined using the [[SystemTag: $:/tags/Macro]].
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The tag [[SystemTag: $:/tags/Macro/View]] is used to define procedures that should only be available within the main view template and the preview panel.
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The tag [[SystemTag: $:/tags/Macro/View/Body]] is used to define procedures that should only be available within the main view template body and the preview panel.
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