SYNOPSIS

int mtext_character (MText * mt, int from, int to, int c)

DESCRIPTION

Search a character in an M-text. The mtext_character() function searches M-text mt for character c. If from is less than to, the search begins at position from and goes forward but does not exceed (to - 1). Otherwise, the search begins at position (from - 1) and goes backward but does not exceed to. An invalid position specification is regarded as both from and to being 0.

RETURN VALUE

If c is found, mtext_character() returns the position of its first occurrence. Otherwise it returns -1 without changing the external variable merror_code. If an error is detected, it returns -1 and assigns an error code to the external variable merror_code.

COPYRIGHT

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>.