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TiddlyWiki5
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implemented the new regexp syntax

print-window-tiddler
Stephan Hradek 2014-01-14 22:07:20 +01:00
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editions/tw5.com/tiddlers/concepts/TiddlerFilters.tid
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@ -1,3 +1,9 @@
created: 20130827080000000
modified: 20140107114229585
tags: concepts
title: TiddlerFilters
type: text/vnd.tiddlywiki
Filters are used in TiddlyWiki to choose tiddlers by specifying simple match criteria.
! Examples
@ -38,7 +44,7 @@ A filter string consists of one or more runs of filter operators that each look
* ''prefix'': tests whether a tiddlers title starts with the prefix specified in the operand
* ''limit'': limits the number of subresults to the integer specified in the operand
* ''tag'': tests whether a given tag is (`[tag[mytag]]`) or is not (`[!tag[mytag]]`) present on the tiddler
* ''{field}:'': tests whether a tiddler field has a specified value (`[modifier:[Jeremy]]`) or not (`[!modifier:[Jeremy]]`)
* ''{field}'': tests whether a tiddler field has a specified value (`[modifier[Jeremy]]`) or not (`[!modifier[Jeremy]]`)
* ''tags'': selects the tags on the currently selected tiddlers
* ''tagging'': selects the tiddlers tagged with the currently selected tiddlers
* ''untagged'': selects the any of the selected tiddlers that do not have at least one tag
@ -63,7 +69,7 @@ The operands available with the `is` operator are:
* ''tiddler'': selects all tiddlers excluding shadows, whether or not they are SystemTiddlers
* ''system'': selects all SystemTiddlers
* ''shadow'': selects all ShadowTiddlers
* ''current'': selects the current ContextTiddler
* ''current'': selects the CurrentTiddler
* ''missing'': selects all MissingTiddlers
* ''orphan'': selects all OrphanTiddlers
@ -73,16 +79,6 @@ If a filter operator is written with curly brackets around the operand then it i
''[search{$:/temp/search}]'': selects all tiddlers containing the string contained in the tiddler titled ''$:/temp/search''.
! Regular Expression Filters
The field-filter also accepts regular expressions in the form `/regexp/modifier`. Please refer to you favourite JavaScript documentation to learn more about regular expressions and modifiers.
In the easiest form, regular expressions allow you do do a search on substrings for every field:
* `title:[/example/]`: searches for all tiddlers having "example" in its title.
* `title:[/example$/]`: `$`is an "anchor" for the end of the text. So "example" has to be the end of the title.
* `text:[/jeremy|ruston/i]`: Searches for tiddlers containing Jeremy's first or last name, ignoring the case.
! Runs
Operators are combined into runs that function as logically ANDed expressions by bashing them together and merging the square brackets: