Edge Rewrite
// HTMLRewriter · presentation

This page was redesigned at the edge.

Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.

// request.cf · coarse context

A page that knows where it met you.

Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.

Country
US
Cloudflare location
CMH
Connection
HTTP/2
Language
Not provided

Ray ID: a2289abaa8e63cd0

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Template:Issubst/doc

From Wikipedia, the free encyclopedia

Usage

[edit]

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

[edit]
  • "{{issubst}}" → ""
  • "{{subst:issubst}}" → "yes"

List of subst helper templates

[edit]
  • {{require substitution}} – Prints an error unless substituted.
  • {{ifsubst}} – if-then-else metatemplate that checks if a template is currently being substituted or transcluded
    • {{always substitute}} – For the doc of the above templates; prints a message asking for it be substituted.
    • {{frequently substituted}} – like "may..." below
    • {{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.
    • {{may be substituted}} – For the doc of templates whose substitution is optional.
    • {{substitution}} – Allows free-fill description of whether the template should be substituted and under what conditions.
  • {{issubst}} – Returns "yes" if substituted.
  • {{HTML comment}} – To sign substitutions with comments that contain wikitext expansions
  • Module:Unsubst – Prevents substitution.
  • Module:Unsubst-infobox – Prevents substitution for infoboxes, cleans up parameters.