Is it clear enough that there should be no more than one URL per line?

A committer might type something like this (not exceeding 72 characters):

PR: https://bugs.freebsd.org/###### https://bugs.freebsd.org/######

… sorry, I could not find the related report at the time of my previous comment.

I visualise any string of two or more white space-separated URLs, on a single line, resulting in a single, invalid link in cgit.

From FreeBSD bug 266473 – cgit.freebsd.org breaks some links – seems to not recognise some types of URI delimiter (RFC 3986):

{F53896353}