Template:Ifsubst
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This template is used in MediaWiki:Abusefilter-disallowed-semicolon. Changes to it can cause immediate changes to the Wikipedia user interface. To avoid large-scale disruption, any changes should first be tested in this template's /sandbox or /testcases subpage, or in your own user space. The tested changes can then be added in one single edit to this template. Please discuss any changes on the talk page before implementing them. |
Usage
Meta template that returns the first parameter if evaluated during substitution, and the second parameter if evaluated during transclusion.
Note that this template must be used in safesubst mode to work properly:
{{ {{{|safesubst:}}}ifsubst| yes | no }}
The |demo=
parameter can be used for testing the template. Set |demo=yes
to always display the yes text, |demo=no
to always display the no text, or |demo={{{demo|}}}
to pass through the value from the parent template.
List of subst helper templates
- {{require substitution}}: Prints an error unless substituted.
- {{always substitute}}: For the doc of the above templates; prints a message asking for it be substituted.
- {{never substitute}}: The reverse of {{always substitute}}. For the doc of templates which should not be substituted; prints a message asking for it not to be substituted.
- {{substitution}}: Allows free-fill description of whether the template should be substituted and under what conditions.
- {{issubst}}: Returns "yes" if substituted.
- {{ifsubst}}: Forks if substituted or not.
- Module:Unsubst: Prevents substitution.
- Module:Unsubst-infobox: Prevents substitution for infoboxes, cleans up parameters.
The above documentation is transcluded from Template:Ifsubst/doc. (edit | history) Editors can experiment in this template's sandbox (edit | diff) and testcases (edit) pages. Please add categories to the /doc subpage. Subpages of this template. |