We test here, if any \end_{somethig} matches \begin_{something}.
Exeptions are \end_index and \end_branch ATM, they should
match \index and \branch respectively.
Also added new testfile.
To omit the error, there are 2 possibilities
1.) Change \inputencoding to utf8-platex
or
2.) write some text in default language prior to the following
subchapter 1.2.2
Probably a candidate for language nesting
This works around a limitation of the test machinery, which never switches
TeX fonts on for format that need that, it only switches TeX fonts off for
formats needing it.
Thanks to Kornel we do now have the infrastructure for running dedicated
export tests. This is the first one, showing a language nesting bug which is
already in 2.1. It is inverted for now, but this will hopefully change soon.
