From b20313e027d4af1a5567a76803da47d7fa9100ee Mon Sep 17 00:00:00 2001
From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Sat, 7 May 2016 22:10:34 +0200
Subject: [PATCH] Erase markers before processing highlight FEN

Markers from the Betza generator were only half-heartedly erased when
a color-FEN camein through a highlight command, because FENs tend to
skip empty squares in stretches. This was already fixed for the legal[][]
array, but now it is fixed for the markers itself as well.
---
 backend.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/backend.c b/backend.c
index 58e3f2e..241bf96 100644
--- a/backend.c
+++ b/backend.c
@@ -7399,11 +7399,10 @@ MarkByFEN(char *fen)
 {
 	int r, f;
 	if(!appData.markers || !appData.highlightDragging) return;
-	for(r=0; r<BOARD_HEIGHT; r++) for(f=BOARD_LEFT; f<BOARD_RGHT; f++) legal[r][f] = 0;
+	for(r=0; r<BOARD_HEIGHT; r++) for(f=BOARD_LEFT; f<BOARD_RGHT; f++) legal[r][f] = marker[r][f] = 0;
 	r=BOARD_HEIGHT-1-deadRanks; f=BOARD_LEFT;
 	while(*fen) {
 	    int s = 0;
-	    marker[r][f] = 0;
 	    if(*fen == 'M') legal[r][f] = 2; else // request promotion choice
 	    if(*fen == 'B') legal[r][f] = 4; else // request auto-promotion to victim
 	    if(*fen >= 'A' && *fen <= 'Z') legal[r][f] = 3; else
-- 
1.7.0.4