sym_after        1997 src/extlib.c   static ScmObj sym_after = SCM_UNBOUND;
sym_after        2031 src/extlib.c     else if (mode == sym_after)    retmode = SCM_STRING_SCAN_AFTER;
sym_after        6140 src/extlib.c     sym_after = Scm_Intern(&sym_after__NAME);