$translate.instant do interpolation event when translation id is not found

[mariocerrato]

Subject of the issue

Using $translate.instant('Hello<br>world') I receive the string "Hello&lt;br&gt;Hello2" instead of the original string.
If I use $translate('Hello<br>world').then(...) in the callback function I receive the original string.

Debugging code I've found that in the instant function call defaultInterpolator.interpolate that transform and sanitize the string from html chars.
Using the promise interpolation isn't called if translationId isn't found.

Your environment

• version of angular-translate: v.2.8.1
• version of angular: v1.4.14
• which browser and its version: Chrome v.66

Steps to reproduce

var title = 'Hello';
var message = 'Hello<br>world!';
$q.all({
translateTitle: $translate(title),
translateMessage: $translate(message)
}).then(function successCallback(translations) {
var instantMessage = $translate.instant(message);
title = translations.translateTitle;
message = translations.translateMessage;
toastr['info'](message, title);
toastr['info'](instantMessage, title);
});

[knalli]

This is partly issued by #1101

Short story: You have to choose a strategy wisely depending on your need. You can use #1101 (comment) as a help.

[knalli]

Note/reminder:

It looks like your environment is using an old or older release of AngularJS and/or angular-translate. After updating your dependencies, please check and verify your issue again.

[RostVY]

I confirm that there's an issue. I'm using the latest AngularJS version 1.7.2 and the latest angular-translate version 2.18.1.
I have debugged the sources and on the screenshot below you can see that the
defaultInterpolator.interpolate() is used when the result is not found in the translation table.
And you can see on screenshot that there's interpolationId, which has been passed to the method. So the defaultInterpolator should not be used, but the interpolator, whose interpolationId has been passed.

[knalli]

@RostVY Thank you digging for some info :)

Maybe you want to make a contribution fixing this issue?

[RostVY]

@knalli I wish I could, but I really don't want to - I'm on vacation without access to computer and without any wish to see computers, source codes and so on. If noone fixes during next month, I may rethink my decision.

[ericnewton76]

@RostVY lol, I can relate to "without any wish to see computers, sources codes and so on."

Did you ever solve your issue with angular-translate?

[RostVY]

@ericnewton76 nope :(. I have not tried and I am unsure how it is supposed to work. Using
result = translationId;
in the line, which is highlighted on my screenshot could resolve some of issues. But I'm not sure if that's correct solution which will have no side effects.