avoid using isspace() due to problem on MacOS-X (Mavericks) and because it is locale dependent

Cython/Utility/Buffer.c

@@ -593,8 +593,11 @@ __pyx_buffmt_parse_array(__Pyx_BufFmt_Context* ctx, const char** tsp)
 
     /* Parse all numbers in the format string */
     while (*ts && *ts != ')') {
-        if (isspace(*ts))
-            continue;
+        // ignore space characters (not using isspace() due to C/C++ problem on MacOS-X)
+        switch (*ts) {
+            case ' ': case '\f': case '\r': case '\n': case '\t': case '\v':  continue;
+            default:  break;  /* not a 'break' in the loop */
+        }
 
         number = __Pyx_BufFmt_ExpectNumber(&ts);
         if (number == -1) return NULL;

Cython/Utility/Printing.c

@@ -47,10 +47,16 @@ static int __Pyx_Print(PyObject* f, PyObject *arg_tuple, int newline) {
         if (PyString_Check(v)) {
             char *s = PyString_AsString(v);
             Py_ssize_t len = PyString_Size(v);
-            if (len > 0 &&
-                isspace(Py_CHARMASK(s[len-1])) &&
-                s[len-1] != ' ')
+            if (len > 0) {
+                // append soft-space if necessary (not using isspace() due to C/C++ problem on MacOS-X)
+                switch (s[len-1]) {
+                    case ' ': break;
+                    case '\f': case '\r': case '\n': case '\t': case '\v':
                         PyFile_SoftSpace(f, 0);
+                        break;
+                    default:  break;
+                }
+            }
         }
     }
     if (newline) {