+#
+# Sets key bindings.
+#
+# Authors:
+# Sorin Ionescu <sorin.ionescu@gmail.com>
+#
+
+# Return if requirements are not found.
+if [[ "$TERM" == 'dumb' ]]; then
+ return 1
+fi
+
+#
+# Options
+#
+
+# Beep on error in line editor.
+setopt BEEP
+
+#
+# Variables
+#
+
+# Treat these characters as part of a word.
+WORDCHARS='*?_-.[]~&;!#$%^(){}<>'
+
+# Use human-friendly identifiers.
+zmodload zsh/terminfo
+typeset -gA key_info
+key_info=(
+ 'Control' '\C-'
+ 'ControlLeft' '\e[1;5D \e[5D \e\e[D \eOd'
+ 'ControlRight' '\e[1;5C \e[5C \e\e[C \eOc'
+ 'Escape' '\e'
+ 'Meta' '\M-'
+ 'Backspace' "^?"
+ 'Delete' "^[[3~"
+ 'F1' "$terminfo[kf1]"
+ 'F2' "$terminfo[kf2]"
+ 'F3' "$terminfo[kf3]"
+ 'F4' "$terminfo[kf4]"
+ 'F5' "$terminfo[kf5]"
+ 'F6' "$terminfo[kf6]"
+ 'F7' "$terminfo[kf7]"
+ 'F8' "$terminfo[kf8]"
+ 'F9' "$terminfo[kf9]"
+ 'F10' "$terminfo[kf10]"
+ 'F11' "$terminfo[kf11]"
+ 'F12' "$terminfo[kf12]"
+ 'Insert' "$terminfo[kich1]"
+ 'Home' "$terminfo[khome]"
+ 'PageUp' "$terminfo[kpp]"
+ 'End' "$terminfo[kend]"
+ 'PageDown' "$terminfo[knp]"
+ 'Up' "$terminfo[kcuu1]"
+ 'Left' "$terminfo[kcub1]"
+ 'Down' "$terminfo[kcud1]"
+ 'Right' "$terminfo[kcuf1]"
+ 'BackTab' "$terminfo[kcbt]"
+)
+
+# Set empty $key_info values to an invalid UTF-8 sequence to induce silent
+# bindkey failure.
+for key in "${(k)key_info[@]}"; do
+ if [[ -z "$key_info[$key]" ]]; then
+ key_info[$key]='�'
+ fi
+done
+
+#
+# External Editor
+#
+
+# Allow command line editing in an external editor.
+autoload -Uz edit-command-line
+zle -N edit-command-line
+
+# Enables terminal application mode and updates editor information.
+function zle-line-init {
+ # The terminal must be in application mode when ZLE is active for $terminfo
+ # values to be valid.
+ if (( $+terminfo[smkx] )); then
+ # Enable terminal application mode.
+ echoti smkx
+ fi
+}
+zle -N zle-line-init
+
+# Disables terminal application mode and updates editor information.
+function zle-line-finish {
+ # The terminal must be in application mode when ZLE is active for $terminfo
+ # values to be valid.
+ if (( $+terminfo[rmkx] )); then
+ # Disable terminal application mode.
+ echoti rmkx
+ fi
+}
+zle -N zle-line-finish
+
+# Displays an indicator when completing.
+function expand-or-complete-with-indicator {
+ local indicator
+ zstyle -s ':prezto:module:editor:info:completing' format 'indicator'
+ print -Pn "$indicator"
+ zle expand-or-complete
+ zle redisplay
+}
+zle -N expand-or-complete-with-indicator
+
+# Inserts 'sudo ' at the beginning of the line.
+function prepend-sudo {
+ if [[ "$BUFFER" != su(do|)\ * ]]; then
+ BUFFER="sudo $BUFFER"
+ (( CURSOR += 5 ))
+ fi
+}
+zle -N prepend-sudo
+
+# Reset to default key bindings.
+bindkey -d
+
+#
+# Vi Key Bindings
+#
+
+# Edit command in an external editor.
+bindkey -M vicmd "v" edit-command-line
+
+# Undo/Redo
+bindkey -M vicmd "u" undo
+bindkey -M vicmd "$key_info[Control]R" redo
+
+if (( $+widgets[history-incremental-pattern-search-backward] )); then
+ bindkey -M vicmd "?" history-incremental-pattern-search-backward
+ bindkey -M vicmd "/" history-incremental-pattern-search-forward
+else
+ bindkey -M vicmd "?" history-incremental-search-backward
+ bindkey -M vicmd "/" history-incremental-search-forward
+fi
+
+#
+# Emacs and Vi Key Bindings
+#
+
+for keymap in 'emacs' 'viins'; do
+ bindkey -M "$keymap" "$key_info[Home]" beginning-of-line
+ bindkey -M "$keymap" "$key_info[End]" end-of-line
+
+ bindkey -M "$keymap" "$key_info[Insert]" overwrite-mode
+ bindkey -M "$keymap" "$key_info[Delete]" delete-char
+ bindkey -M "$keymap" "$key_info[Backspace]" backward-delete-char
+
+ bindkey -M "$keymap" "$key_info[Left]" backward-char
+ bindkey -M "$keymap" "$key_info[Right]" forward-char
+
+ # Expand history on space.
+ bindkey -M "$keymap" ' ' magic-space
+
+ # Clear screen.
+ bindkey -M "$keymap" "$key_info[Control]L" clear-screen
+
+ # Expand command name to full path.
+ for key in "$key_info[Escape]"{E,e}
+ bindkey -M "$keymap" "$key" expand-cmd-path
+
+ # Duplicate the previous word.
+ for key in "$key_info[Escape]"{M,m}
+ bindkey -M "$keymap" "$key" copy-prev-shell-word
+
+ # Use a more flexible push-line.
+ for key in "$key_info[Control]Q" "$key_info[Escape]"{q,Q}
+ bindkey -M "$keymap" "$key" push-line-or-edit
+
+ # Bind Shift + Tab to go to the previous menu item.
+ bindkey -M "$keymap" "$key_info[BackTab]" reverse-menu-complete
+
+ # Complete in the middle of word.
+ bindkey -M "$keymap" "$key_info[Control]I" expand-or-complete
+
+ # Display an indicator when completing.
+ bindkey -M "$keymap" "$key_info[Control]I" \
+ expand-or-complete-with-indicator
+
+ # Insert 'sudo ' at the beginning of the line.
+ bindkey -M "$keymap" "$key_info[Control]X$key_info[Control]S" prepend-sudo
+done
+
+#
+# Layout
+#
+
+# Set the key layout.
+bindkey -v
+
+unset key{,map,bindings}