It seems that the recent version of 'gettext' (0.21 from Dec. 2019) on
MacOS – at least on my Lion box – has changed language handling. In
the NEWS file I read
* Runtime behaviour:
- The interpretation of the language preferences on macOS has been
improved, especially in the case where a system locale does not
exist for the combination of the selected primary language and
the selected territory.
In my shell, `set | less` shows
LANG=en_US.UTF-8
LANGUAGE=de
Some test results:
bison --help English output
LANG= bison --help German output
LANGUAGE= bison --help English output
LANG=C bison --help English output
I've reported in
https://sourceforge.net/p/testlilyissues/issues/5753/
that `yyout2grammar.py` currently dies if it sees non-English Bison output.
Two possible fixes to our build system:
* Use 'LANG=C' instead of 'LANG='.
* Add 'LANGUAGE='.
What do you think?
Werner
