[Octave-bug-tracker] [bug #53922] unset case sensitivity

[Ian McCallion]

URL:
  <http://savannah.gnu.org/bugs/?53922>

                 Summary: unset case sensitivity
                 Project: GNU Octave
            Submitted by: ianmcc
            Submitted on: Wed 16 May 2018 08:54:25 AM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.4.0
        Operating System: Mac OS

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Details:

Environment variable names on Windows are case insensitive (I don't know about
on unix). The setenv and getenv functions implement this correctly but
unsetenv does not.

Invoking the function below with no parameters causes it to use setenv to
clear the environment variable, which is as it should be. Invoking it
supplying the parameter "unset" causes it to use unset and the variables are
not unset.

function []= unsetbug(x)
    setenv('E1','E1value');
    setenv('e2','e2value');
    if exist('x','var') && strcmpi(x, 'unset')
        unsetenv('E2');
        unsetenv('e1');
    else
        setenv('E2','');
        setenv('e1','');
    end
    v1=getenv('E1')
    v2=getenv('e2')
end





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