Provided by: m17n-docs_1.6.2-1_all
mtext_spn - Search an M-text for a set of characters.
int mtext_spn (MText * mt, MText * accept)
Search an M-text for a set of characters. The mtext_spn() function returns the length of the initial segment of M-text mt1 that consists entirely of characters in M-text mt2.
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