Add shortcut ^S to toggle du mode

README.md

@@ -237,7 +237,7 @@ optional arguments:
               n | Create new
              ^R | Rename entry
               s | Toggle sort by size
-              S | Toggle du mode
+          S, ^S | Toggle du mode
               t | Toggle sort by mtime
               ! | Spawn SHELL in dir
               e | Edit entry in EDITOR

nnn.1

@@ -84,7 +84,7 @@ Create a new file or directory
 Rename selected entry
 .It Ic s
 Toggle sort by file size
-.It Ic S
+.It Ic S, ^S
 Toggle disk usage analyzer mode
 .It Ic t
 Toggle sort by time modified

nnn.c

@@ -988,6 +988,7 @@ filterentries(char *path)
 			case CONTROL('O'): // fallthrough
 			case CONTROL('B'): // fallthrough
 			case CONTROL('V'): // fallthrough
+			case CONTROL('S'): // fallthrough
 			case CONTROL('X'): // fallthrough
 			case CONTROL('Q'):
 				goto end;
@@ -1716,7 +1717,7 @@ show_help(char *path)
 	     "en | Create new\n"
 	    "d^R | Rename entry\n"
 	     "es | Toggle sort by size\n"
-	     "eS | Toggle du mode\n"
+	 "aS, ^S | Toggle du mode\n"
 	     "et | Toggle sort by mtime\n"
 	     "e! | Spawn SHELL in dir\n"
 	     "ee | Edit entry in EDITOR\n"

nnn.h

@@ -137,6 +137,7 @@ static struct key bindings[] = {
 	{ 's',            SEL_FSIZE,     "",     "" },
 	/* Sort by total block count including dir contents */
 	{ 'S',            SEL_BSIZE,     "",     "" },
+	{ CONTROL('S'),   SEL_BSIZE,     "",     "" },
 	/* Toggle sort by time */
 	{ 't',            SEL_MTIME,     "",     "" },
 	/* Redraw window */