From 661af819ffcb9a684a17a76622a02a33d4550f23 Mon Sep 17 00:00:00 2001
From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Sat, 3 Oct 2020 12:17:30 +0200
Subject: [PATCH] Fix PV conversion to SAN during pondering

Converting ponder PVs to SAN did not work when the ponder move was
given through a Hint command, rather than prefixed to the PV is
parentheses. Also, during TwoMachines mode, the conversion was not
invoked at all during pondering (as PV handling is done by another
code section in that case).
---
 backend.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/backend.c b/backend.c
index b564b17..6cdd48e 100644
--- a/backend.c
+++ b/backend.c
@@ -5815,13 +5815,13 @@ LoadMultiPV (int x, int y, char *buf, int index, int *start, int *end, int pane)
 }
 
 char *
-PvToSAN (char *pv)
+PvToSAN (char *pv, int engine)
 {
 	static char buf[10*MSG_SIZ];
 	int i, k=0, savedEnd=endPV, saveFMM = forwardMostMove;
 	*buf = NULLCHAR;
 	if(forwardMostMove < endPV) PushInner(forwardMostMove, endPV); // shelve PV of PV-walk
-	ParsePV(pv, FALSE, 2, 0); // this appends PV to game, suppressing any display of it
+	ParsePV(pv, FALSE, 2, engine+1); // this appends PV to game, suppressing any display of it
 	for(i = forwardMostMove; i<endPV; i++){
 	    if(i&1) snprintf(buf+k, 10*MSG_SIZ-k, "%s ", parseList[i]);
 	    else    snprintf(buf+k, 10*MSG_SIZ-k, "%d. %s ", i/2 + 1, parseList[i]);
@@ -10024,7 +10024,7 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
                     curscore = -curscore;
                 }
 
-		if(appData.pvSAN[cps==&second]) pv = PvToSAN(buf1);
+		if(appData.pvSAN[cps==&second]) pv = PvToSAN(buf1, cps == &second);
 
 		if(*bestMove) { // rememer time best EPD move was first found
 		    int ff1, tf1, fr1, tr1, ff2, tf2, fr2, tr2; char pp1, pp2;
@@ -10265,6 +10265,8 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
                     curscore = -curscore;
                 }
 
+		if(appData.pvSAN[cps==&second]) pv = PvToSAN(buf1, cps == &second);
+
 		cpstats.depth = plylev;
 		cpstats.nodes = nodes;
 		cpstats.time = time;
@@ -10273,7 +10275,7 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
                 cpstats.movelist[0] = '\0';
 
 		if (buf1[0] != NULLCHAR) {
-                    safeStrCpy( cpstats.movelist, buf1, sizeof(cpstats.movelist)/sizeof(cpstats.movelist[0]) );
+                    safeStrCpy( cpstats.movelist, pv, sizeof(cpstats.movelist)/sizeof(cpstats.movelist[0]) );
 		}
 
 		cpstats.ok_to_send = 0;
-- 
1.7.0.4