Template:Issubst/doc

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< Template:Issubst
Revision as of 20:54, 13 September 2016 by imported>Pppery (Fix heading level and remove merged templates)
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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"

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.