man mtext_spn () - Search an M-text for a set of characters.
NAME
mtext_spn - Search an M-text for a set of characters.
SYNOPSIS
int mtext_spn (MText * mt, MText * accept)
DESCRIPTION
The mtext_spn() function returns the length of the initial segment of M-text mt1 that consists entirely of characters in M-text mt2.
SEE ALSO
mtext_cspn()