Error: errors happened while running xgettext over template file with a literal that contains '%'

[Adrian Ribao]

I find an error when running

manage.py makemessages -a

The problem comes when it reads a .html file with this content:

{% blocktrans %}This is some text ... 75% ... more text ... 75% of ...{% endblocktrans %}

The error is:

Error: errors happened while running xgettext on info-tripartita.html
./templates/myfile.html.py:98: atención: 'msgid' format string with unnamed arguments cannot be properly localized:
                                                                 The translator cannot reorder the arguments.
                                                                 Please consider using a format string with named arguments,
                                                                 and a mapping instead of a tuple for the arguments.

It's ok if there is only one % symbol in the string and even if the string has no characters after the second %:

{% blocktrans %}This is some text ... 75% ... more text ... 75%{% endblocktrans %}

I can't find a way to solve this problem.

[Claude Paroz]

Fix + tests

[Claude Paroz]

Attached patch (download it if Trac doesn't show it) tries a simple fix in doubling all '%' signs found inside a translatable strings. I'm not completely convinces it's safe to do so, but I think we miss some extensive tests regarding templatize results. A more clever solution would test if there is another "%(var)s" in the string, and if not, simply output a # no-python-format comment so as xgettext uses it.

[Jannis Leidel]

(In [14459]) Fixed #11966 -- Made it possible to use a percent sign in a translation message id. Thanks for the patch, Claude Paroz.

[Jannis Leidel]

(In [14460]) [1.2.X] Fixed #11966 -- Made it possible to use a percent sign in a translation message id. Thanks for the patch, Claude Paroz.

Backport from trunk (r14459).