The 'main' function of this module accepts the name of a single page. It determines if the page is a redirect; if so it looks up the page, extracts the target, and returns the target name as text. Its usage is {{#invoke:redirect|main|redirect-page-name}}.
The template normally neither takes nor gives square brackets, so to show the result asyty
a link use [[{{#invoke:redirect|main|redirect-page-name}}]]. An error is produced if the redirect does not exist, but for versatility no error is given if the file is not a redirect (returns the original text) or if the file name is blank (returns blank).
However, if the parameter bracket is given a nonblank value, brackets will be passed on if present.
See
{{#invoke:redirect|main|WP:AFC}}
produces
{{#invoke:redirect|main|[[WP:AFD]]|bracket=yes}}
produces
If the target isnt a redirect:
{{#invoke:redirect|main|Wikipedia:Articles for deletion|}}
produces
The 'block' function replaces redirects with the actual names of articles in text entered either directly (using the text= parameter) or by specifying the name of an index page in the first unlabelled parameter. Because checking for redirects is, it only checks a limited number of links, so a feature is given to start only after reaching a link with a particular name. There is also a feature to limit replacements to piped links ([[A|B]] or unpiped links, or to make a piped link when an unpiped link is changed. This allows it to be used to make limited substitutions in articles without disrupting the text.
See