makemessages doesn't find blocktrans if it comes after a comment in templates

[Max Ludwig]

I had a template containing a line like the following:

{# some comment with the word blocktrans #}{% blocktrans with foo=bar %}text text text

The blocktrans gets closed some lines below. When running makemessages now it didn't find this blocktrans, only after I've removed the comment it found it and created a msgid for it.

Even though I experienced this in a Django 1.4.22 project (which I know is EOL by now) I got told in #django on FreeNode that such a comment needs to be on a separate line which the docs don't say a word about: ​https://docs.djangoproject.com/ja/1.9/topics/templates/#comments

[Ryan Castner]

This could be something to do with how comments are tokenized in django.utils.translation ​https://github.com/django/django/blob/master/django/utils/translation/trans_real.py#L607

[Claude Paroz]

Duplicate of #21963.