Url validator fails for compare url and shas with the number 3 in them

[mokkabonna]

The expresstion: [^\.{3}] used in the compare url regexp does not mean what I think you assume it means.

I assume you mean: match anything that does not match three dots in a row.

What it does mean is: match anything but: period, {, 3, }

Also the \ isn't needed when inside a character set

https://www.regular-expressions.info/charclass.html

The usual metacharacters are normal characters inside a character class, and do not need to be escaped by a backslash.

See demo here: Also see a suggestion for an alternative regexp. It allows to my knowledge all chars like dots (in tags, but not multiple in a row) and dashes, underscore etc in branch name/tags.

https://jsfiddle.net/4ros0p8d/3/

([^.]\.?)+(?!\.(?!\.))\.{3}([^.]\.?)+(?!\.) should imo match the desired urls.

([^.]\.?)+  // match anything except a dot, and then a dot :)
(?!\.      // don't match something that has an extra dot
(?!\.))     // except if it has a third dot, then we are cool, let the first expression match all until ..., including single dots
\.{3}       // the three dots
([^.]\.?)+  // same as first
(?!\.)      // simpler pattern for not matching two dots, don't need to check for 3 dots anymore

It's a bit funky with the negative lookahead inside the negative lookahead, but does the trick. It is needed to cancel out the first negative lookahead if it has a total of three dots.