When there is a template error the error line is not set

[dantti]

If I try to render a template like:

"

{{ "foo" bar }}"

I get:
grantlee.template: "Could not parse the remainder, bar from "foo" bar, line 0, admin/index.html"
which clearly isn't line 0 (always set to 0), I tried to find where this is failing (as it's failing since a long time) but failed.