Octave is a great tool, albeit with a few annoying things that took me a while to fix.
This message was suspect and I did not know how to fix it at first. I tried to fix my git bash profile, but nothing worked.
>> help transpose
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LC_ALL = (unset),
LC_NUMERIC = "C",
LC_TIME = "C",
LANG = "en"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
I knew that LC_ALL was not set, but where to set it?
Then I decided to add
putenv('LC_ALL', 'de_CH');
to the file ~/.octaverc and suddenly the message disappeared.