Complete RegExp to verify version numbers

[rugk]

Can we possibly have a full regular expression which can be used to formally verify version numbers according to the spec?
Possibly publish them at https://regex101.com/, because there you can later change (and versionize 😉) it.

This would also allow RegExp pros to just look at this RegExp and get the main ideas how to use semantic verison numbers.

[rugk]

This would also prevent such questions: #271
Because you can easily check it by yourself. 😃

[DavidFichtmueller]

Take a look at #232 or #266 (comment) (this one is better). I hope this helps.
I think this should be part of the specification as well.

[rugk]

I also saw #32 and semver/semver.org#59 which have some ideas there.

So I still leave this issue open for adding this to the spec and which would allow keeping the RegExp updated as I found many outdated RegExp in the issues you and I linked to.

[FichteFoll]

Note that because of ambiguity in #181 we are currently unable to construct an exact regular expression, although the unpublished BNF suggests a solution.

[rugk]

As far as I understand here is a RegExp which respects the loading zeros convention.
So do you mean this with BNF or what else?

Edit: Okay, found out what the BNF is. So actually you want to automatically create a RegExp out of the BNF, whcih is currently not seem possible, because the leading zeros part is missing in the BNF:

[FichteFoll]

No, in the initial post of #181 it is explained that the spec would be ambiguous whether digits-only identifiers with leading zeros make a valid semantic version. I just came to the conclusion that it's in fact not ambiguous, so you can ignore my comment.

[haacked]

Closing this in lieu of semver/semver.org#59