Added [,] mappings for go 10 images back/forward

main.c

@@ -43,8 +43,7 @@ img_t img;
 win_t win;
 
 const char **filenames;
-unsigned int filecnt;
-unsigned int fileidx;
+int filecnt, fileidx;
 
 unsigned char timeout;
 
@@ -168,6 +167,20 @@ void on_keypress(XEvent *ev) {
 				changed = 1;
 			}
 			break;
+		case '[':
+			if (fileidx != 0) {
+				fileidx = MAX(0, fileidx - 10);
+				img_load(&img, filenames[fileidx]);
+				changed = 1;
+			}
+			break;
+		case ']':
+			if (fileidx != filecnt - 1) {
+				fileidx = MIN(fileidx + 10, filecnt - 1);
+				img_load(&img, filenames[fileidx]);
+				changed = 1;
+			}
+			break;
 		case 'g':
 			if (fileidx != 0) {
 				fileidx = 0;

options.h

@@ -21,7 +21,7 @@
 
 typedef struct options_s {
 	const char **filenames;
-	unsigned int filecnt;
+	int filecnt;
 } options_t;
 
 extern const options_t *options;