Prevent SDL_StartTextInput during single-letter y/n prompts

y/n prompts also support controller inputs, so we don't want to trigger an
onscreen keyboard for them.

Quake/in_sdl.c

@@ -1059,7 +1059,8 @@ void IN_SendKeyEvents (void)
 			key = IN_SDL_KeysymToQuakeKey(event.key.keysym.sym);
 #endif
 
-			Key_Event (key, down);
+		// also pass along the underlying keycode using the proper current layout for Y/N prompts.
+			Key_EventWithKeycode (key, down, event.key.keysym.sym);
 
 #if !defined(USE_SDL2)
 			if (down && (event.key.keysym.unicode & ~0x7F) == 0)

Quake/keys.c

@@ -948,6 +948,21 @@ Should NOT be called during an interrupt!
 ===================
 */
 void Key_Event (int key, qboolean down)
+{
+	Key_EventWithKeycode (key, down, 0);
+}
+
+/*
+===================
+Key_EventWithKeycode
+
+Called by the system between frames for both key up and key down events
+Should NOT be called during an interrupt!
+keycode parameter should have the key's actual keycode using the current keyboard layout,
+not necessarily the US-keyboard-based scancode. Pass 0 if not applicable.
+===================
+*/
+void Key_EventWithKeycode (int key, qboolean down, int keycode)
 {
 	char	*kb;
 	char	cmd[1024];
@@ -981,7 +996,11 @@ void Key_Event (int key, qboolean down)
 	if (key_inputgrab.active)
 	{
 		if (down)
+		{
 			key_inputgrab.lastkey = key;
+			if (keycode > 0)
+				key_inputgrab.lastchar = keycode;
+		}
 		return;
 	}
 
@@ -1135,7 +1154,11 @@ Key_TextEntry
 qboolean Key_TextEntry (void)
 {
 	if (key_inputgrab.active)
-		return true;
+	{
+		// This path is used for simple single-letter inputs (y/n prompts) that also
+		// accept controller input, so we don't want an onscreen keyboard for this case.
+		return false;
+	}
 
 	switch (key_dest)
 	{

Quake/keys.h

@@ -182,6 +182,7 @@ void Key_EndInputGrab (void);
 void Key_GetGrabbedInput (int *lastkey, int *lastchar);
 
 void Key_Event (int key, qboolean down);
+void Key_EventWithKeycode (int key, qboolean down, int keycode);
 void Char_Event (int key);
 qboolean Key_TextEntry (void);