feat(shell)!: bind the Atuin search to "/" in vi-normal mode (#1629)

A search feature in the vi-normal mode of shells can be called by "/".
To make the shell-integration keybindings consistent with the existing
shell keybindings, we add the keybinding to "/" in this patch.

This patch removes the Ctrl-r binding in the "vicmd" keymap in Zsh.
The key Ctrl-r is used for the `redo` operation in the vi-normal mode
by default.  We would like to avoid overwriting an existing keybinding
with a totally different feature.

atuin/src/command/init.rs

@@ -33,8 +33,8 @@ impl Cmd {
 
         if std::env::var("ATUIN_NOBIND").is_err() {
             const BIND_CTRL_R: &str = r"bindkey -M emacs '^r' _atuin_search_widget
-bindkey -M vicmd '^r' _atuin_search_vicmd_widget
-bindkey -M viins '^r' _atuin_search_viins_widget";
+bindkey -M viins '^r' _atuin_search_viins_widget
+bindkey -M vicmd '/' _atuin_search_widget";
 
             const BIND_UP_ARROW: &str = r"bindkey -M emacs '^[[A' _atuin_up_search_widget
 bindkey -M vicmd '^[[A' _atuin_up_search_vicmd_widget

atuin/src/shell/atuin.bash

@@ -244,6 +244,7 @@ if [[ $__atuin_bind_ctrl_r == true ]]; then
     # the vi_nmap keymap in ble.sh.
     bind -m emacs -x '"\C-r": __atuin_history --keymap-mode=emacs'
     bind -m vi-insert -x '"\C-r": __atuin_history --keymap-mode=vim-insert'
+    bind -m vi-command -x '"/": __atuin_history --keymap-mode=emacs'
 fi
 
 # shellcheck disable=SC2154