Even if browsers don't need URL escapinf anymore (which I can confirm for Chromium and Firefox) hyperref and/or PDF need it. I was getting invalid links in my PDFs. A filter which wraps the canonical() method of URI.pm does the trick. Perhaps the LaTeX writer can do the escaping for hyperref

onsdag 29 juli 2015 skrev John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org>:
Yes, I believe it did once URL-escape links.

And then someone persuaded me that this wasn't the best
approach, because browsers don't need it any more, etc.
So at some point we stopped doing it.  You can probably
find this in the changelog or by searching github issues.
It would be good to reconstruct the reasoning.

+++ BP Jonsson [Jul 29 15 02:30 ]:
Didn't pandoc use to escape URLS in links? Links e.g. to Swedish Wikipedia containing accented letters[^1] become invalid, but I seem to remember that they used to work. I have written a filter which solves the problem with the help of the appropriate Perl module, so it's not urgent for me personally, but I can't be the only one running into this.

/bpj

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