mtext_replace -

       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_replace(3m17n)

       Replace sub-text of M-text with another. The mtext_replace() function replaces sub-text of M-text mt1
       between from1 (inclusive) and to1 (exclusive) with the sub-text of M-text mt2 between from2 (inclusive)
       and to2 (exclusive). The new sub-text inherits text properties of the old sub-text.

           MERROR_MTEXT, MERROR_RANGE

       mtext_replace -

           If the operation was successful, mtext_replace() returns 0. Otherwise, it returns -1 and assigns an
           error code to the external variable merror_code.

mtext_insert()

       int mtext_replace (MText * mt1, int from1, int to1, MText * mt2, int from2, int to2)