isbase64          403 maint/gnulib/lib/base64.c   if (!isbase64 (in[0]) || !isbase64 (in[1]))
isbase64          426 maint/gnulib/lib/base64.c       if (!isbase64 (in[2]))
isbase64          446 maint/gnulib/lib/base64.c           if (!isbase64 (in[3]))
isbase64           41 maint/gnulib/lib/base64.h extern bool isbase64 (char ch) _GL_ATTRIBUTE_CONST;