if (sscanf(move, "%d,%d,%d,%d,%d%n",
&x1, &y1, &x2, &y2, &nl, &n) != 5)
goto badmove;
if (sscanf(move, "%d,%d,%d,%d,%d%n",
&x1, &y1, &x2, &y2, &nl, &n) != 5)
goto badmove;
is1 = INDEX(ret, gridi, x1, y1);
is2 = INDEX(ret, gridi, x2, y2);
if (!is1 || !is2) goto badmove;
is1 = INDEX(ret, gridi, x1, y1);
is2 = INDEX(ret, gridi, x2, y2);
if (!is1 || !is2) goto badmove;
if (sscanf(move, "%d,%d,%d,%d%n",
&x1, &y1, &x2, &y2, &n) != 4)
goto badmove;
if (sscanf(move, "%d,%d,%d,%d%n",
&x1, &y1, &x2, &y2, &n) != 4)
goto badmove;
is1 = INDEX(ret, gridi, x1, y1);
is2 = INDEX(ret, gridi, x2, y2);
if (!is1 || !is2) goto badmove;
is1 = INDEX(ret, gridi, x1, y1);
is2 = INDEX(ret, gridi, x2, y2);
if (!is1 || !is2) goto badmove;
if (sscanf(move, "%d,%d%n",
&x1, &y1, &n) != 2)
goto badmove;
if (sscanf(move, "%d,%d%n",
&x1, &y1, &n) != 2)
goto badmove;
is1 = INDEX(ret, gridi, x1, y1);
if (!is1) goto badmove;
island_togglemark(is1);
is1 = INDEX(ret, gridi, x1, y1);
if (!is1) goto badmove;
island_togglemark(is1);
sprintf(str, "%d", dsf_canonify(state->solver->dsf, DINDEX(x,y)));
draw_text(dr, ox, oy, FONT_VARIABLE, ts,
sprintf(str, "%d", dsf_canonify(state->solver->dsf, DINDEX(x,y)));
draw_text(dr, ox, oy, FONT_VARIABLE, ts,
int col = (v & G_ISSEL) ? COL_SELECTED : tcol;
int bg = (v & G_CURSOR) ? COL_CURSOR :
(v & G_MARK) ? COL_MARK : COL_BACKGROUND;
int col = (v & G_ISSEL) ? COL_SELECTED : tcol;
int bg = (v & G_CURSOR) ? COL_CURSOR :
(v & G_MARK) ? COL_MARK : COL_BACKGROUND;
#ifdef DRAW_GRID
draw_rect_outline(dr, COORD(is->x), COORD(is->y),
#ifdef DRAW_GRID
draw_rect_outline(dr, COORD(is->x), COORD(is->y),
struct island *is = &state->islands[i];
grid = GRID(state, is->x, is->y);
cx = COORD(is->x) + ts/2;
struct island *is = &state->islands[i];
grid = GRID(state, is->x, is->y);
cx = COORD(is->x) + ts/2;