mtext_putenv -

       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free
       Documentation License <http://www.gnu.org/licenses/fdl.html>.

Version 1.8.4                                    Mon Sep 25 2023                             mtext_putenv(3m17n)

       Change or add an environment variable. The mtext_putenv() function changes or adds the value of
       environment variables according to M-text mt. It calls the function putenv with an argument generated by
       encoding mt according to the current locale (LC_CTYPE).

       mtext_putenv -

           This function returns zero on success, or -1 if an error occurs.

       int mtext_putenv (MText * mt)