mtext_get_property -

       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_get_property(3m17n)

       Get the topmost text property. The mtext_get_property() function searches the character at position pos
       in M-text mt for a text property whose key is key.

       mtext_get_property -

           If a text property is found, mtext_get_property() returns it. If there are multiple text properties,
           it returns the topmost one. If no such property is found, it returns NULL without changing the
           external variable merror_code.

       If an error is detected, mtext_get_property() returns NULL and assigns an error code to the external
       variable merror_code.

MTextProperty* mtext_get_property (MText * mt, int pos, MSymbol key)