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TiddlyWiki5/editions/tw5.com/tiddlers/concepts/TextReference.tid
Mario Pietsch a49436160d
Improve Filter Syntax documentation (#7368)
* Improve Filter Syntax documentaion / navigation

* update links and missing diagrams

* rename legacy prefix to shortcut prefix

* Update editions/tw5.com/tiddlers/filters/Filter Operators.tid

Co-authored-by: yaisog <m@rcuswinter.de>

* Update editions/tw5.com/tiddlers/filters/syntax/And Filter Run Prefix.tid

Co-authored-by: yaisog <m@rcuswinter.de>

* Update editions/tw5.com/tiddlers/filters/syntax/Sort Filter Run Prefix.tid

Co-authored-by: yaisog <m@rcuswinter.de>

* Update editions/tw5.com/tiddlers/filters/syntax/Sort Filter Run Prefix.tid

Co-authored-by: yaisog <m@rcuswinter.de>

* Update editions/tw5.com/tiddlers/filters/syntax/Sort Filter Run Prefix.tid

Co-authored-by: yaisog <m@rcuswinter.de>

* Update editions/tw5.com/tiddlers/filters/syntax/Cascade Filter Run Prefix.tid

Co-authored-by: yaisog <m@rcuswinter.de>

* Update editions/tw5.com/tiddlers/filters/syntax/And Filter Run Prefix.tid

Co-authored-by: yaisog <m@rcuswinter.de>

* add most changes a suggested by yaisog

* fix copy / paste from-version

* replace operand with parameter in the docs

* fix typo

* fix typos and improve railroad diagrams consistency

* move "new from version" info for filter run prefixes below the table

* fix typo transclusion and substitution

* Move Filters tiddler to the top level in the TOC

* wip-breadcrumbs

* breadcrumbs & breadcrumbsList macro final

* remove files that do not belong to this PR

* restore release banner

* add simple / story mode to breadcrumbs

* .breadcrumbs macro update comments

* new breadcrumbs CSS, woks with small screens

* make CSS configurable using hidden-settings

* improve CSS fro small screens

* remove the initial: recursiveParentTag macro

* improve location info for breadcrumbs nav. add "alt-text" for Edge ::after element

* breadcrumbs add mode=field

* bc add initial docs

* breadcrumbsField will also respect the story ordering

* add configurable global filterMode setting

* improve arrow CSS for browser zooming

* add bc links use bc-caption if caption field is non-empty

* breadcrumbs improve comments

* breadcrumbs aria-lable uses caption if there is one

* breadcrumbs improve documentation

* breadcrumbs improve docs for sort param

* fix showArrows docs

* remove .bc-link aria-label .. it's not needed if caption is resolved properly

* use subfilter instead of enlist to evaluate the "excluded" variable. Be consistent with toc-macros

* remove breadcrumbs macros - they have their own PR now

* resolve conflict

* add back doc-macros tiddler

* integrate :then filter run prefix

* remove .breadcrumbs macros and their config tiddlers

* fix typos as requested

---------

Co-authored-by: yaisog <m@rcuswinter.de>
2024-02-14 17:20:32 +01:00

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created: 20130827075900000
modified: 20230321130421587
tags: Concepts
title: TextReference
type: text/vnd.tiddlywiki
A TextReference is a general purpose way to describe a fragment of text as either a field of a tiddler, or an index within a [[data tiddler|DataTiddlers]].
In different situations, text references can be used to retrieve values, or to specify a value that should be modified.
A TextReference consists of several parts:
* The title of the target tiddler. If omitted, it defaults to the [[Current Tiddler]]
* Either one of:
** The name of a field (marked with `!!`)
** The name of an index within a [[data tiddler|DataTiddlers]] (marked with `##`)
* If both the field and index are omitted, the text field is used as the default
Most of the parts of a text reference can be optional:
* `tiddlerTitle` - the title [[field|TiddlerFields]] of the specified tiddler
* `tiddlerTitle!!field` - a [[tiddler field|TiddlerFields]] (eg, `modified`, `modifier`, `type` etc)
* `!!field` - a [[field|TiddlerFields]] of the current tiddler
* `tiddlerTitle##propertyIndex` - extracts a named property from DataTiddlers
Text references can be used in several places:
* As [[indirect parameters|Filter Parameter]] within [[Filters]] (eg, `<$list filter="[tag{MyTag!!name}]"/>`)
* As [[indirect attributes|HTML in WikiText]] of an element or widget (eg, `<$widget attrib={{Title!!description}}/>`)
* As the parameter of a shortcut transclusion (eg, `{{MyTiddler!!title}}`)
* As the `state` attribute of the RevealWidget and the LinkCatcherWidget
<$macrocall $name=".tip" _="""Note the distinction between a text reference such as `foo!!bar` and a transclusion of a text reference such as `{{foo!!bar}}`"""/>