iscntrl           924 maint/gnulib/lib/dfa.c   {"cntrl", iscntrl, false},
iscntrl           179 maint/gnulib/lib/mbswidth.c           if (!iscntrl (c))
iscntrl          3502 maint/gnulib/lib/regcomp.c     BUILD_CHARCLASS_LOOP (iscntrl);
iscntrl            42 maint/gnulib/tests/test-c-ctype.c           ASSERT (c_iscntrl (c) == (iscntrl (c) != 0));