Attributes are removed from HTML tags in translations

[theRobinator]

Minimal reproduction in a test case:

import {I18n} from '@ngx-translate/i18n-polyfill';
import {MissingTranslationStrategy} from '@angular/core';

describe('i18n-polyfill', () => {
    it('keeps attributes around', () => {
        const translate = new I18n('xlf', '', 'en-US', MissingTranslationStrategy.Ignore);
        const str = `It's <span class="blue">you</span> versus <span class="red">them</span>!`;
        const result = translate(str);
        expect(result).toBe(str);
    });
});

This test fails with:

Expected 'It's <span>you</span> versus <span>them</span>!' to be 'It's <span class="blue">you</span> versus <span class="red">them</span>!'.

[JoniJnm]

Can this be merged?

[hugo-valcourt]

Same problem here