[dotancohen]

Error message phrasing should not be in code. It should be in localization files, even for the default language, and not require a developer to modify.

[SamuelAdams]

Depends on the requirements. I've had many internal-only applications only require one language: English. At that point you can hard code many things, which skips the loading other files, checking different languages, etc.

[OJFord]

I'd still rather the exact wording isn't in code, personally:

    get_msg('fail_add_address')

vs.

    'I\'m sorry, we\'ve been unable to add the address %s at this time,' \
    ' please try again later.'

(... but that's an ideal I have without ever having worked with it, so what do I know, and ymmv, etc.)

[rakamotog]

And what is this localization file called? We do not have a system where non dev can commit any change in our product.

We do have a constants file which has all the messages but a PM does not access to code/commit and has to go via a Dev.

[rmetzler]

It really depends on who‘s the target group. I hate localization in Developer Tools etc, because googling it is harder and a lot of times English is just easier to understand. It’s different for a shopping site.