From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Sat, 21 Feb 2015 19:02:06 +0000 (+0100)
Subject: Fix parsing of illegal drops from PGN
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=3536ccf4ea73a0157ef01ae42c72e5448543eb39;p=xboard.git

Fix parsing of illegal drops from PGN

These were parsed as if the first two characters were the from-square.
---

diff --git a/backend.c b/backend.c
index d637ab1..8aae7b4 100644
--- a/backend.c
+++ b/backend.c
@@ -12075,8 +12075,13 @@ LoadGameOneMove (ChessMove readAhead)
 	    if (appData.debugMode)
 	      fprintf(debugFP, "Parsed %s into IllegalMove %s\n",
 		      yy_text, currentMoveString);
-            fromX = currentMoveString[0] - AAA;
-            fromY = currentMoveString[1] - ONE;
+            if(currentMoveString[1] == '@') {
+                fromX = CharToPiece(WhiteOnMove(currentMove) ? ToUpper(currentMoveString[0]) : ToLower(currentMoveString[0]));
+                fromY = DROP_RANK;
+            } else {
+                fromX = currentMoveString[0] - AAA;
+                fromY = currentMoveString[1] - ONE;
+            }
             toX = currentMoveString[2] - AAA;
             toY = currentMoveString[3] - ONE;
 	    promoChar = currentMoveString[4];