Implement modes. Modes allow you to use different keybindings and switch between them.

For example, you can create a mode which will let you resize windows
with some easy to use keys. So, instead of binding a combination
of your homerow and modifiers to resize, like this:

	bind Mod4+44 resize right +10
	bind Mod4+45 resize right -10
	...

You can instead define a new mode:

	mode "resize" {
		bind 44 resize right +10
		bind 45 resize right -10
		...
		bind 36 mode default
	}

	bindsym Mod4+r mode resize

So, if you press Mod4+r now, your keybindings will be set to the ones
defined in your resize mode above. You can then use your homerow
(without any other modifier) to resize the current column/row and
press enter to go back to the default mode when you are done.

Note that using this option requires you to enable the new lexer/parser
by passing the -l flag to i3 when starting.

src/cfgparse.y

@@ -222,7 +222,7 @@ command:
 bindline:
         binding
         {
-                TAILQ_INSERT_TAIL(&bindings, $<binding>1, bindings);
+                TAILQ_INSERT_TAIL(bindings, $<binding>1, bindings);
         }
         ;
 
@@ -262,8 +262,23 @@ bindsym:
 mode:
         TOKMODE WHITESPACE QUOTEDSTRING WHITESPACE '{' modelines '}'
         {
+                if (strcasecmp($<string>3, "default") == 0) {
+                        printf("You cannot use the name \"default\" for your mode\n");
+                        exit(1);
+                }
                 printf("\t now in mode %s\n", $<string>3);
                 printf("\t current bindings = %p\n", current_bindings);
+                Binding *binding;
+                TAILQ_FOREACH(binding, current_bindings, bindings) {
+                        printf("got binding on mods %d, keycode %d, symbol %s, command %s\n",
+                                        binding->mods, binding->keycode, binding->symbol, binding->command);
+                }
+
+                struct Mode *mode = scalloc(sizeof(struct Mode));
+                mode->name = strdup($<string>3);
+                mode->bindings = current_bindings;
+                current_bindings = NULL;
+                SLIST_INSERT_HEAD(&modes, mode, modes);
         }
         ;