Allow unpausing upstream savegames using PM_COMMAND_DURING_PAUSE

src/misc_cmd.cpp

@@ -184,6 +184,11 @@ CommandCost CmdPause(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2,
 			if ((p2 & 1) == 0) {
 				_pause_mode = static_cast<PauseMode>(_pause_mode & (byte)~p1);
 				_pause_countdown = (p2 >> 1);
+
+				/* If the only remaining reason to be paused is that we saw a command during pause, unpause. */
+				if (_pause_mode == PM_COMMAND_DURING_PAUSE) {
+					_pause_mode = PM_UNPAUSED;
+				}
 			} else {
 				_pause_mode = static_cast<PauseMode>(_pause_mode | (byte)p1);
 			}

src/openttd.h

@@ -75,6 +75,7 @@ enum PauseMode : byte {
 	PM_PAUSED_ACTIVE_CLIENTS = 1 << 4, ///< A game paused for 'min_active_clients'
 	PM_PAUSED_GAME_SCRIPT    = 1 << 5, ///< A game paused by a game script
 	PM_PAUSED_LINK_GRAPH     = 1 << 6, ///< A game paused due to the link graph schedule lagging
+	PM_COMMAND_DURING_PAUSE  = 1 << 7, ///< A game paused, and a command executed during the pause; resets on autosave
 
 	/** Pause mode bits when paused for network reasons. */
 	PMB_PAUSED_NETWORK = PM_PAUSED_ACTIVE_CLIENTS | PM_PAUSED_JOIN,