Escape character doesn't work in links

[Iiridayn]

What I did (reproduced at https://parsedown.org/demo):

[test)](foo])
[te\]st)](foo])
[test)](fo\)o])

What I got:

<a href="foo%5D">test)</a>
[te]st)](foo])
<a href="fo%5C">test)</a>o])

What I expected (on the left at demo):

<a href="foo%5D">test)</a>
<a href="foo%5D">te]st)</a>
<a href="fo)o%5D">test)</a>

GFM output:

test)
te]st)
test)

Relevant specification examples:

• https://spec.commonmark.org/0.31.2/#example-22
• https://github.github.com/gfm/#example-318