From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Mon, 21 Oct 2013 20:38:53 +0000 (+0200)
Subject: Fix sweep promotions
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=f74dde3c39e1bf046f28972c752113f6311314d8;p=xboard.git

Fix sweep promotions

We should not be able to select shogi-style promotion partners of
other pieces, as there is no promotion suffix to indicate them.
---

diff --git a/backend.c b/backend.c
index 39ec535..b1a20ff 100644
--- a/backend.c
+++ b/backend.c
@@ -5328,6 +5328,7 @@ Sweep (int step)
 	else if(promoSweep == WhiteKing && step > 0) promoSweep = BlackKing;
 	if(!step) step = -1;
     } while(PieceToChar(promoSweep) == '.' || PieceToChar(promoSweep) == '~' || promoSweep == pawn ||
+	    !toggleFlag && PieceToChar(promoSweep) == '+' || // skip promoted versions of other
 	    appData.testLegality && (promoSweep == king || promoSweep == WhiteLion || promoSweep == BlackLion));
     if(toX >= 0) {
 	int victim = boards[currentMove][toY][toX];