isnonalpha        153 third_party/libpng/pngerror.c #define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
isnonalpha       2489 third_party/libpng/pngrutil.c #define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))