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.

This template is used on many pages, so changes to it will be widely noticed. Please test any changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Please consider discussing changes on the talk page before implementing them.

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"

Template:List of subst helper templates