Template:Issubst/doc

This is a documentation subpage for Template:Issubst.
It contains usage information, categories and other content that is not part of the original template page.

Usage

Meta template that returns "yes" if evaluated during substitution, and the empty string if evaluated during transclusion.
Note that this template must be used in safesubst mode to work properly:

{{ safesubst:<noinclude/>issubst}}

Examples

"{{issubst}}" → ""
"{{subst:issubst}}" → "yes"

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.
{{ifsubst}} – Forks if substituted or not.
{{issubst}} – Returns "yes" if substituted.
Module:Unsubst – Prevents substitution.
Module:Unsubst-infobox – Prevents substitution for infoboxes, cleans up parameters.