[Octave-bug-tracker] [bug #53922] unsetenv is case sensitive on Windows

[Mike Miller]

Follow-up Comment #11, bug #53922 (project octave):

Rik - so you can confirm that 'unsetenv' does currently work when using an
all-caps environment variable name?

The Gnulib function wrapper 'putenv' already supports unsetting environment
variables by passing in an empty second argument. That's what I would like to
see us use if that is the appropriate solution, needs testing.

The liboctave class octave::env has 'getenv' and 'putenv' functions, I think
it should also have an 'unsetenv' function to absract this, whatever the right
solution is.

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