Given a page, I'd like to use the "what links here" tool—but only internal links whose wikitext looks like

[[Example#Example of normal heading]]

or

[[Example#Example of normal heading|example link]]

not

[[Example]]

nor

[[Example|example link]] Ss0jse (talk) 15:10, 21 October 2024 (UTC)

Such a tool is (or, if it doesn't exist, would be) useful for post-split cleanup. Ss0jse (talk) 15:12, 21 October 2024 (UTC)

Searching for something like insource:/Example#Example of normal heading/ might work. DMacks (talk) 15:29, 21 October 2024 (UTC)

A bare regex search like that should be avoided per mw:Help:CirrusSearch#Regular expression searches. You can for example add linksto:Example to the search. PrimeHunter (talk) 15:50, 21 October 2024 (UTC)

Good point. I tried a few variants with a preceding search-term, but they did not work. For example, teahouse insource:/Teahouse#Section link list/ found a ton of pages that did not contain the string "Section link list". DMacks (talk) 16:57, 21 October 2024 (UTC)

So, DMacks and PrimeHunter, I think searching this could do what I'd like:

insource:"[[Security clearance#" insource:/"[[Security clearance#"/ Ss0jse (talk) 18:11, 21 October 2024 (UTC)

@Ss0jse: # and [ have special meaning in regex searches (the part in /.../) and must be escaped with backslashes if you just want to match the character. Don't include " unless you actually want that character. This works: insource:"[[Security clearance#" insource:/\[\[[Ss]ecurity clearance\#/. [Ss] finds two more links by including lowercase s. It may still miss some cases, e.g. if the source has underscore instead of space. PrimeHunter (talk) 19:51, 21 October 2024 (UTC)

@PrimeHunter Okay. Ss0jse (talk) 21:41, 21 October 2024 (UTC)