Ihor Radchenko <yantar92@posteo.net> writes:

> "Christopher M. Miles" <numbchild@gmail.com> writes:
>
>> When URL has a character "_" at the end, Org mode can't fontify the URL
>> link correctly.
>>
>> For example:
>>
>> https://www.twitter.com/example_
>
> Plain links are tricky. There is no definitive regexp to catch all
> possible links. We use heuristics.
>
> If you see anything we can improve in org-link-make-regexps, patches are
> welcome.

I have checked out the function `org-link-make-regexps' source code, the
regexp is hard to understand for me. I will study it when I got time to
figure whether I can improve it. Thanks for your hint.

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