ctype_letter      166 ext/pcre/pcrelib/dftables.c   ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
ctype_letter     4120 ext/pcre/pcrelib/pcre_compile.c     if (*(++ptr) == '*' && (cd->ctypes[ptr[1]] & ctype_letter) != 0)
ctype_letter     4126 ext/pcre/pcrelib/pcre_compile.c       while ((cd->ctypes[*++ptr] & ctype_letter) != 0);
ctype_letter      124 ext/pcre/pcrelib/pcre_maketables.c   if (isalpha(i)) x += ctype_letter;
ctype_letter       75 ext/pcre/pcrelib/pcre_study.c if (caseless && (cd->ctypes[c] & ctype_letter) != 0)