Template:Further if exists/sandbox

This is the template sandbox page for Template:Further if exists (diff).
See also the companion subpage for test cases.

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This template uses Lua:

Module:Labelled list hatnote (sandbox)

Displays a "further information" hatnote, if and only if at least one of the linked pages exists. If some but not all linked pages exist, only the linked ones will be displayed.

This allows hatnotes to be created before the target page exists, and automatically become visible once it does. This may be especially useful for pages involving repeated events like annual sports tournaments.

Outside of its functionality to filter out nonexistent pages, it functions exactly like the related template {{further}}, including its label functionality.

Examples

{{further if exists|Nonexistent page}} →
{{further if exists|Foo|Nonexistent page|Bar}} →

v t e Hatnote templates
Wikipedia:Hatnote Wikipedia:Disambiguation Wikipedia:Redirect
Generic	{{Hatnote}} {{Hatnote group}} {{Self-reference}}
For and about	{{For}} {{For-text}} (for custom text) {{For-multi}} (for multiple uses) {{About}} Variations: {{Other uses}} {{Other uses of}} {{Redirect-distinguish-for}} {{About-distinguish}} {{About-distinguish-text}}
Other topics	{{Other people}} {{About other people}} (adds "about" description) {{Similar names}} {{Other storms}} {{Other places}} {{Other ships}}
Redirect	{{Redirect}} {{Redirect2}} (for two redirects) {{Redirect-multi}} (for multiple redirects) {{Redirect-several}} (for several redirects, without listing each) {{Redirect-synonym}} {{Redirect-distinguish}} {{Redirect-distinguish-text}} {{Redirect-distinguish-for}} {{Technical reasons}}
Distinguish	{{Distinguish}} (supports custom text) {{About-distinguish}} {{About-distinguish-text}} (for custom text) {{Redirect-distinguish}} {{Redirect-distinguish-text}} (for custom text) {{Redirect-distinguish-for}}
For use in sections	{{Main}} {{Main if exists}} {{Main list}} {{Further}} {{Further-text}} (for custom text) {{Further interlanguage link}} {{See also}} {{See also if exists}} {{See also-text}} (for custom text) {{For outline}} {{For timeline}}
Special	{{Broader}} {{For introduction}} {{See Wiktionary}} {{Transcluding article}} {{Transcluded section}}
Subject specific	{{About year}} {{Highway detail hatnote}} {{For LMST}} {{WikiIPA}}
Category:Hatnote templates modules for [family] names for lists hatnote templates for category pages