Ran across this broken link here. Summit shows links differently to the webui, and probably also other apps. I think matching webui behavior is best here.
There seems to be more complex regex at play, including checking for matching brackets etc.. Probably best to dig that out of the sourcecode.
Examples:
Summit: https://en.m.wikipedia.org/wiki/Orion_(spacecraft)
Raw: https://en.m.wikipedia.org/wiki/Orion_(spacecraft)
Webui: https://en.m.wikipedia.org/wiki/Orion_(spacecraft)
Summit: https://example.org/aa(aa
Raw: https://example.org/aa(aa
Webui: https://example.org/aa(aa
Summit: https://example.org/aa(aa)
Raw: https://example.org/aa(aa)
Webui: https://example.org/aa(aa)
Interestingly while writing this, I noticed the rules for android long press text select also match webui behavior.
I will consider this is all else fails but I also don't have high hopes this regex would even work.