Template:Is redirect/sandbox

This is the template sandbox page for Template:Is redirect (diff).
See also the companion subpage for test cases.

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This template is used on approximately 304,000 pages.
To avoid major disruption and server load, any changes should be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them.

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This template uses Lua:

Module:Pagetype (sandbox)

Returns yes when |1=somepagename is a redirect, and a <blank space> when not a redirect.

For illustration purposes, in this documentation redirect pages are in italics: Mainpage → Main_Page

Expect 'yes': {{Is redirect|Autism spectrum}} → yes

Expect '<blank>' (no): {{Is redirect|Autism}} →

Talkpage handling

By default, a check specifying a talk page is performed on the corresponding subject page (it's associated page in mainspace, or in Template space, etc.).

To check the talkpage itself, both use |talk=yes and the talk page name.: {{Is redirect|Talk:Autism spectrum|talk=yes}} →

Background. By default, when entering a Talkpage to check (like Talk:Autism spectrum), the check is performed on the subject page. This stems from the module used. For example:

Page to check: Talk:Autism spectrum: {{Is redirect|Talk:Autism spectrum}}

Current pages status: Autism spectrum is a redirect, Talk:Autism spectrum is not a redirect (it has content).

{{Is redirect}} returns:

{{Is redirect|Autism spectrum}} → yes

{{Is redirect|Talk:Autism spectrum}} → yes

(unexpected for the talkpage itself)

Applying Talk:Autism:

{{Is redirect|Talk:Autism spectrum|talk=yes}} →

Applying the subject page Autism:

{{Is redirect|Autism spectrum|talk=yes}} → yes

(|talk=yes for a subject page name checks the subject page, not the associated talk page)

Usage

Main Page (expect neg): {{is redirect|Main_Page}} →
Mainpage (expect yes): {{is redirect|Mainpage}} → yes

Can be used as:

{{#if:{{Is redirect|somepagename}} |value when yes |value when no}}

Template Data

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:Is redirect in articles based on its TemplateData.

TemplateData for Is redirect

Returns "yes" or <blank> (for no) for the pagename entered

Template parameters[Edit template data]
Parameter		Description	Type	Status
1	`1`	no description	Unknown	optional
Check Talk	`talk`	By default, the subject page is checked Default no	Boolean	optional