From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Mon, 9 Feb 2015 09:01:48 +0000 (+0100)
Subject: Fix highlight-induced promotions
X-Git-Url: http://winboard.nl/cgi-bin?p=xboard.git;a=commitdiff_plain;h=9b4c2f6e576b10ffb1ce3a08edc0bc2f7454bf41

Fix highlight-induced promotions

A purple square in the highlight color FEN triggered the promotion
procedure, but the chosen promotion piece would not be suffixed to
the move.
---

diff --git a/backend.c b/backend.c
index 674a9d3..7747844 100644
--- a/backend.c
+++ b/backend.c
@@ -7726,7 +7726,9 @@ printf("(%d,%d)-(%d,%d) %d %d\n",fromX,fromY,toX,toY,x,y);
 
     if(gatingPiece != EmptySquare && gameInfo.variant == VariantSChess) promoChoice = ToLower(PieceToChar(gatingPiece));
 
-    if (HasPromotionChoice(fromX, fromY, toX, toY, &promoChoice, appData.sweepSelect)) {
+    if(legal[toY][toX] == 2) promoChoice = ToLower(PieceToChar(defaultPromoChoice)); // highlight-induced promotion
+
+    if (legal[toY][toX] == 2 || HasPromotionChoice(fromX, fromY, toX, toY, &promoChoice, appData.sweepSelect)) {
 	SetHighlights(fromX, fromY, toX, toY);
         MarkTargetSquares(1);
 	if(gameInfo.variant == VariantSuper || gameInfo.variant == VariantGreat || gameInfo.variant == VariantGrand) {