Issubst/doc

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:}}}issubst}}

Examples

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

• {{require subst}}: Prints an error unless substituted.
  • {{subst check top}}、{{subst check bottom}}: Same purpose, but used as a pair.
  • {{subst only}}: For the doc of the above templates; prints a message asking for it be substituted.
  • {{nosubst}}: The reverse of {{subst only}}. For the doc of templates which should not be substituted; prints a message asking for it not to be substituted.
• {{issubst}}: Returns "yes" if substituted.
• {{ifsubst}}: Forks if substituted or not.