typeahead: allow multiple line expression

[dmatteo]

This PR will allow developers to use newlines in the typeahead string, giving them the chance to improve the readability of their code

Example:

    <input ng-model="selected"
           typeahead="datum as datum.name for datum in data
                        | filter:{name: $viewValue}
                        | orderBy: datum.name"
           typeahead-on-select="goToElement($item)">

[chrisirhc]

As seen in angular/angular.js@43a2f3d , a better way to fix this is to use [\s\S]+ to include both whitespace and non-whitespace character classes.

[dmatteo]

As suggested by @chrisirhc, I've introduced [\s\S]+ in the PR

[chrisirhc]

Looks good to me. Should be merged soon. 👍 Thank you, @dmatteo !

[dmatteo]

Happy to help!

I hope to make a bigger contribution next time.

Bye 😄

[pkozlowski-opensource]

@dmatteo I was about to land it but have some tests failing locally. Not sure if this is due to the patch or maybe I'm getting the merge all wrong.

Could you please rebase / squash commits so it is easier for me to review / merge? Thank you!

[dmatteo]

@pkozlowski-opensource Excuse the big delay, but it's done. Is it working now?

[pkozlowski-opensource]

No worries @dmatteo , thank you for all the work on this PR!