Make unsupported variant on loading 1st engine non-fatal

[xboard.git] / backend.c

diff --git a/backend.c b/backend.c
index 9495083..24558d5 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -10486,7 +10486,19 @@ InitChessProgram (ChessProgramState *cps, int setup)
       b = SupportedVariant(cps->variants, gameInfo.variant, gameInfo.boardWidth,
                            gameInfo.boardHeight, gameInfo.holdingsSize, cps->protocolVersion, cps->tidy);
       if (b == NULL) {
-       DisplayFatalError(variantError, 0, 1);
+       VariantClass v;
+       char c, *q = cps->variants, *p = strchr(q, ',');
+       if(p) *p = NULLCHAR;
+       v = StringToVariant(q);
+       DisplayError(variantError, 0);
+       if(v != VariantUnknown && cps == &first) {
+           int w, h, s;
+           if(sscanf(q, "%dx%d+%d_%c", &w, &h, &s, &c) == 4) // get size overrides the engine needs with it (if any)
+               appData.NrFiles = w, appData.NrRanks = h, appData.holdingsSize = s, q = strchr(q, '_') + 1;
+           ASSIGN(appData.variant, q);
+           Reset(TRUE, FALSE);
+       }
+       if(p) *p = ',';
        return;
       }