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setenv(): Delete 0-length environment variables
Previously setenv() would only delete an environment variable if it was passed a NULL string pointer as a value. It should also delete an environment variable when it encounters a valid string pointer of 0-length. This change/fix is generally useful and is necessary for the upcoming "editenv" command. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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@ -400,7 +400,7 @@ int _do_setenv (int flag, int argc, char *argv[])
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int setenv (char *varname, char *varvalue)
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int setenv (char *varname, char *varvalue)
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{
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{
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char *argv[4] = { "setenv", varname, varvalue, NULL };
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char *argv[4] = { "setenv", varname, varvalue, NULL };
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if (varvalue == NULL)
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if ((varvalue == NULL) || (varvalue[0] == '\0'))
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return _do_setenv (0, 2, argv);
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return _do_setenv (0, 2, argv);
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else
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else
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return _do_setenv (0, 3, argv);
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return _do_setenv (0, 3, argv);
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