The failing tests are ok because we expect wrong things and need to change the tests.

test(
	"https://www.example.com/foo/?bar=baz&inga=42&quux",
	`<p><a href="https://www.example.com/foo/?bar=baz&inga=42&quux" rel="nofollow">https://www.example.com/foo/?bar=baz&amp;inga=42&amp;quux</a></p>`)

<p><a href="https://www.example.com/foo/?bar=baz&inga=42&quux" rel="nofollow">https://www.example.com/foo/?bar=baz&amp;inga=42&amp;quux</a></p>
is not valid html.
<p><a href="https://www.example.com/foo/?bar=baz&amp;inga=42&amp;quux" rel="nofollow">https://www.example.com/foo/?bar=baz&amp;inga=42&amp;quux</a></p>
is valid.

...aaa%2Fbbb... and ...aaa/bbb... are both valid. As bluemonday switched to the second, we need to switch too.

<p><a href="magnet:?xt=urn%3Abtih%3A5dee65101db281ac9c46344cd6b175cdcadabcde&dn=download" rel="nofollow">magnet:?xt=urn:btih:5dee65101db281ac9c46344cd6b175cdcadabcde&amp;dn=download</a></p>
Same as 1) because the single & is invalid and : does not need to be encoded.

Codecov Report

Merging #16379 (f69cd21) into main (0393a57) will increase coverage by 1.27%.
The diff coverage is 52.54%.

@@            Coverage Diff             @@
##             main   #16379      +/-   ##
==========================================
+ Coverage   44.24%   45.51%   +1.27%     
==========================================
  Files         695      709      +14     
  Lines       82341    83767    +1426     
==========================================
+ Hits        36429    38127    +1698     
+ Misses      40014    39504     -510     
- Partials     5898     6136     +238     

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