/* Check if the character at CHARPOS (and BYTEPOS) is composed
(possibly with the following characters) on window W. ENDPOS limits
- characters to be composed. FACE, in non-NULL, is a base face of
+ characters to be composed. FACE, if non-NULL, is a base face of
the character. If STRING is not nil, it is a string containing the
character to check, and CHARPOS and BYTEPOS are indices in the
string. In that case, FACE must not be NULL.