decodeURIComponent - prevent URIError

[modmac]

Replace decodeURIComponent with tryDecodeURIComponent to prevent throwing "URIError: malformed URI sequence".

https://github.com/angular/angular.js/blob/master/src/Angular.js#L1275

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[modmac]

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#13993 (comment).

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CLAs look good, thanks!

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CLAs look good, thanks!

[gkalpak]

I think this will break the contract that $location.path() or $location.hash() return a string.
OOC, under what circumstances can this error been thrown ? Do you have a reproduction.

There should also be some tests, verifying the new behavior and guarding against regressions.

[modmac]

Yes, try to request a page with a #% hash in the URL.

Example:
https://console.developers.google.com/freetrial?newProject=false#%

Maybe in this example, if decodeURIComponent throws an error, we should catch it and encode hash/uri to keep wrong characters (ex. single %) as encoded UTF?

[gkalpak]

Aha, I see the error.

TBH, trying to guess and fix unencoded UTF characters is a business I'd rather not be into :)
That said, silently failing on invalid URLs, won't be fun to debug. I think it's better to throw here.

@petebacondarwin, wdyt ?