zsh: fix weird Alt+direction alacritty behaviour

home-manager/modules/shell/zsh/default.nix

@@ -44,12 +44,23 @@ in {
         }
 
         zle -N zle_go_dir_up
+        # Alt+Up
         bindkey "^[[1;3A" zle_go_dir_up
+
+        # Alt+Down
+        bindkey "^[[1;3B" kill-buffer
+
+        # Up/Down
         bindkey "^[[A" history-substring-search-up
         bindkey "^[[B" history-substring-search-down
 
+        # Ctrl+Left/Right
         bindkey "^[[1;5C" forward-word
         bindkey "^[[1;5D" backward-word
+
+        # Alt+Left/Right
+        bindkey "^[[1;3C" forward-word
+        bindkey "^[[1;3D" backward-word
       '';
 
       zplug = {

starship/starship.toml

@@ -1,3 +1,4 @@
+# newline between shell prompts
 add_newline = false
 #format = "$all$directory$character"