WordPress cuts short links with "!"

[larysa]

Short links that have an exclamation point in the URLs [ "!" ] posted in comments are "cut" by the WP.

For instance, WordPress cuts ​http://name.ly/!Bd$8N down to ​http://name.ly/

Facebook and Twitter, for instance, handle such links correctly.

As it is 100% legal URL syntax [ ​http://en.wikipedia.org/wiki/URL ] to have "!" in the URL, such cuts are annoying.

WP should not cut the URLs downto "!" character but parse it to the next space or new line character.

[coffee2code]

Duplicate of #14993.