Daniel Wyatt to slouken

I also found a bug in the non-printable character fix.
In SDL_keyboard.c:SDL_SendKeyboardText:
    if (*text < ' ' || *text == 127) {
needs to be:
    if ((unsigned char)*text < ' ' || *text == 127) {

Otherwise bytes >= 128 will be considered non-printable.

src/events/SDL_keyboard.c

@@ -768,7 +768,7 @@ SDL_SendKeyboardText(const char *text)
     int posted;
 
     /* Don't post text events for unprintable characters */
-    if (*text < ' ' || *text == 127) {
+    if ((unsigned char)*text < ' ' || *text == 127) {
         return 0;
     }