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prezto/modules/editor/init.zsh
2012-09-25 17:27:16 -04:00

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#
# Sets key bindings.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
# Usage:
# To enable key bindings, add the following to zpreztorc, and replace 'map'
# with 'emacs' or 'vi.
#
# zstyle ':prezto:module:editor' keymap 'map'
#
# To enable the auto conversion of .... to ../.., add the following to
# zpreztorc.
#
# zstyle ':prezto:module:editor' dot-expansion 'yes'
#
# To indicate when the editor is in the primary keymap (emacs or viins), add
# the following to your theme prompt setup function.
#
# zstyle ':prezto:module:editor:keymap' primary '>>>'
#
# To indicate when the editor is in the primary keymap (emacs or viins) insert
# mode, add the following to your theme prompt setup function.
#
# zstyle ':prezto:module:editor:keymap:primary' insert 'I'
#
# To indicate when the editor is in the primary keymap (emacs or viins)
# overwrite mode, add the following to your theme prompt setup function.
#
# zstyle ':prezto:module:editor:keymap:primary' overwrite 'O'
#
# To indicate when the editor is in the alternate keymap (vicmd), add the
# following to your theme prompt setup function.
#
# zstyle ':prezto:module:editor:keymap' alternate '<<<'
#
# To indicate when the editor is completing, add the following to your theme
# prompt setup function.
#
# zstyle ':prezto:module:editor' completing '...'
#
# Return if requirements are not found.
if [[ "$TERM" == 'dumb' ]]; then
return 1
fi
#
# Options
#
# Beep on error in line editor.
setopt BEEP
# Allow command line editing in an external editor.
autoload -Uz edit-command-line
zle -N edit-command-line
#
# Variables
#
# Use human-friendly identifiers.
zmodload zsh/terminfo
typeset -gA key_info
key_info=(
'Control' '\C-'
'Escape' '\e'
'Meta' '\M-'
'Backspace' "^?"
'Delete' "^[[3~"
'F1' "$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]"
)
# Do not bind any keys if there are empty values in $key_info.
for key in "${(k)key_info[@]}"; do
if [[ -z "$key_info[$key]" ]]; then
print "prezto: one or more keys are non-bindable" >&2
unset key{,_info}
return 1
fi
done
#
# Functions
#
# Exposes information about the Zsh Line Editor via the $editor_info associative
# array.
function editor-info {
# Clean up previous $editor_info.
unset editor_info
typeset -gA editor_info
if [[ "$KEYMAP" == 'vicmd' ]]; then
zstyle -s ':prezto:module:editor:keymap' alternate 'REPLY'
editor_info[keymap]="$REPLY"
else
zstyle -s ':prezto:module:editor:keymap' primary 'REPLY'
editor_info[keymap]="$REPLY"
if [[ "$ZLE_STATE" == *overwrite* ]]; then
zstyle -s ':prezto:module:editor:keymap:primary' overwrite 'REPLY'
editor_info[overwrite]="$REPLY"
else
zstyle -s ':prezto:module:editor:keymap:primary' insert 'REPLY'
editor_info[overwrite]="$REPLY"
fi
fi
unset REPLY
zle reset-prompt
zle -R
}
zle -N editor-info
# Updates editor information when the keymap changes.
function zle-keymap-select zle-line-init zle-line-finish {
zle editor-info
}
zle -N zle-keymap-select
zle -N zle-line-finish
zle -N zle-line-init
# Toggles emacs overwrite mode and updates editor information.
function overwrite-mode {
zle .overwrite-mode
zle editor-info
}
zle -N overwrite-mode
# Enters vi insert mode and updates editor information.
function vi-insert {
zle .vi-insert
zle editor-info
}
zle -N vi-insert
# Moves to the first non-blank character then enters vi insert mode and updates
# editor information.
function vi-insert-bol {
zle .vi-insert-bol
zle editor-info
}
zle -N vi-insert-bol
# Enters vi replace mode and updates editor information.
function vi-replace {
zle .vi-replace
zle editor-info
}
zle -N vi-replace
# Expands .... to ../..
function expand-dot-to-parent-directory-path {
if [[ $LBUFFER = *.. ]]; then
LBUFFER+='/..'
else
LBUFFER+='.'
fi
}
zle -N expand-dot-to-parent-directory-path
# Displays an indicator when completing.
function expand-or-complete-with-indicator {
local indicator
zstyle -s ':prezto:module:editor' completing 'indicator'
print -Pn "$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 $BUFFER"
(( CURSOR += 5 ))
fi
}
zle -N prepend-sudo
# Reset to default key bindings.
bindkey -d
#
# Emacs Key Bindings
#
for key ("$key_info[Escape]"{B,b}) bindkey -M emacs "$key" emacs-backward-word
for key ("$key_info[Escape]"{F,f}) bindkey -M emacs "$key" emacs-forward-word
bindkey -M emacs "$key_info[Escape]$key_info[Left]" emacs-backward-word
bindkey -M emacs "$key_info[Escape]$key_info[Right]" emacs-forward-word
# Kill to the beginning of the line.
for key in "$key_info[Escape]"{K,k}
bindkey -M emacs "$key" backward-kill-line
# Redo.
bindkey -M emacs "$key_info[Escape]_" redo
# Search previous character.
bindkey -M emacs "$key_info[Control]X$key_info[Control]B" vi-find-prev-char
# Match bracket.
bindkey -M emacs "$key_info[Control]X$key_info[Control]]" vi-match-bracket
# Edit command in an external editor.
bindkey -M emacs "$key_info[Control]X$key_info[Control]E" edit-command-line
if (( $+widgets[history-incremental-pattern-search-backward] )); then
bindkey -M emacs "$key_info[Control]R" \
history-incremental-pattern-search-backward
bindkey -M emacs "$key_info[Control]S" \
history-incremental-pattern-search-forward
fi
#
# Vi Key Bindings
#
# Edit command in an external editor.
bindkey -M vicmd "v" edit-command-line
# Undo/Redo
bindkey -M vicmd "u" undo
bindkey -M vicmd "$key_info[Control]R" redo
# Switch to command mode.
bindkey -M viins "jk" vi-cmd-mode
bindkey -M viins "kj" vi-cmd-mode
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
# Expand .... to ../..
if zstyle -t ':prezto:module:editor' dot-expansion; then
bindkey -M "$keymap" "." expand-dot-to-parent-directory-path
fi
# Display an indicator when completing.
bindkey -M "$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
# Do not expand .... to ../.. during incremental search.
if zstyle -t ':prezto:module:editor' dot-expansion; then
bindkey -M isearch . self-insert 2> /dev/null
fi
#
# Layout
#
# Set the key layout.
zstyle -s ':prezto:module:editor' keymap 'keymap'
if [[ "$keymap" == (emacs|) ]]; then
bindkey -e
elif [[ "$keymap" == vi ]]; then
bindkey -v
else
print "prezto: invalid keymap: $keymap" >&2
fi
unset key{map,}