lookup_char_property 3960 src/buffer.c     return lookup_char_property (XOVERLAY (overlay)->plist, prop, 0);
lookup_char_property 1710 src/intervals.c   return lookup_char_property (plist, prop, 1);
lookup_char_property  270 src/intervals.h extern Lisp_Object lookup_char_property (Lisp_Object, Lisp_Object, bool);