ng-pattern allows literal RegExp syntax; expression documentation says this is disallowed

[nmschulte]

I'm submitting a ...

• bug report
• feature request
• other (Please do not submit support requests here (see above))

Current behavior:
The ng-pattern directive works when supplying a literal RegExp:
<input ... ng-pattern="/^\d+$/" ... />

The Angular expression documentation notes this is not allowed.

Expected / new behavior:
Some sort of consistency; preferably the ability to create RegExps from Angular expressions.

[gkalpak]

The docs are correct, ng-pattern="/^\d+$/" does not work. Please provide a reproduction if you think this is not the case 😃

[nmschulte]

@gkalpak https://plnkr.co/edit/udsNM6KX690nQYVwnoXK?p=preview

only accepts input beginning with digits, using RegExp literal for ng-pattern -- (v1.5.10, and latest 1.x apparently)

[gkalpak]

Wow, it seems that ngPattern is a special case (as seen here) and it has been since forever. I wonder how I missed that.

So, the general rule that AngularJS expressions do not support RegExps is true, but it would be nice to have a special mention in the ngPattern docs. @nmschulte would you like to submit a PR?

[thamaranth]

I can submit the PR for the docs if it's still open

[gkalpak]

@thamaranth, that great! Nobody is working on it afaik, so it's yours 😃