zsh-autosuggestions/dist/autosuggestions.zsh

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2016-02-06 06:14:08 +08:00
# Fish-like fast/unobtrusive autosuggestions for zsh.
# https://github.com/tarruda/zsh-autosuggestions
# v0.1.1
2016-02-06 06:14:08 +08:00
#
# Copyright (c) 2013 Thiago de Arruda
# Copyright (c) 2016 Eric Freese
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following
# conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#--------------------------------#
# Global Configuration Variables #
#--------------------------------#
# Color to use when highlighting suggestion
# Uses format of `region_highlight`
# More info: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Zle-Widgets
ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE='fg=8'
# Prefix to use when saving original versions of bound widgets
ZSH_AUTOSUGGEST_ORIGINAL_WIDGET_PREFIX=autosuggest-orig-
# Widgets that clear the suggestion
ZSH_AUTOSUGGEST_CLEAR_WIDGETS=(
history-search-forward
history-search-backward
history-beginning-search-forward
history-beginning-search-backward
up-line-or-history
down-line-or-history
accept-line
)
# Widgets that modify the suggestion
ZSH_AUTOSUGGEST_MODIFY_WIDGETS=(
list-choices
complete-word
menu-complete
menu-expand-or-complete
reverse-menu-complete
expand-or-complete
expand-or-complete-prefix
self-insert
magic-space
bracketed-paste
expand-cmd-path
accept-and-menu-complete
backward-delete-char
vi-backward-delete-char
delete-char
vi-delete-char
delete-char-or-list
)
# Widgets that accept the entire suggestion
ZSH_AUTOSUGGEST_ACCEPT_WIDGETS=(
forward-char
end-of-line
vi-forward-char
vi-end-of-line
)
# Widgets that accept the suggestion as far as the cursor moves
ZSH_AUTOSUGGEST_PARTIAL_ACCEPT_WIDGETS=(
forward-word
vi-forward-word
vi-forward-word-end
vi-forward-blank-word
vi-forward-blank-word-end
)
#-------------------------------------#
# Handle Deprecated Variables/Widgets #
#-------------------------------------#
unset _ZSH_AUTOSUGGEST_DEPRECATED_START_WIDGET_WARNING_SHOWN
_zsh_autosuggest_check_deprecated_config() {
if [ -n "$AUTOSUGGESTION_HIGHLIGHT_COLOR" ]; then
_zsh_autosuggest_deprecated_warning "AUTOSUGGESTION_HIGHLIGHT_COLOR is deprecated. Use ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE instead."
[ -z "$ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE" ] && ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE=$AUTOSUGGESTION_HIGHLIGHT_STYLE
unset AUTOSUGGESTION_HIGHLIGHT_STYLE
fi
if [ -n "$AUTOSUGGESTION_HIGHLIGHT_CURSOR" ]; then
_zsh_autosuggest_deprecated_warning "AUTOSUGGESTION_HIGHLIGHT_CURSOR is deprecated."
unset AUTOSUGGESTION_HIGHLIGHT_CURSOR
fi
if [ -n "$AUTOSUGGESTION_ACCEPT_RIGHT_ARROW" ]; then
_zsh_autosuggest_deprecated_warning "AUTOSUGGESTION_ACCEPT_RIGHT_ARROW is deprecated. The right arrow now accepts the suggestion by default."
unset AUTOSUGGESTION_ACCEPT_RIGHT_ARROW
fi
}
_zsh_autosuggest_deprecated_warning() {
>&2 echo "zsh-autosuggestions: $@"
}
_zsh_autosuggest_deprecated_start_widget() {
if [ -z "$_ZSH_AUTOSUGGEST_DEPRECATED_START_WIDGET_WARNING_SHOWN" ]; then
_zsh_autosuggest_deprecated_warning "The autosuggest-start widget is deprecated. Use the autosuggest_start function instead. For more info, see README at https://github.com/tarruda/zsh-autosuggestions."
_ZSH_AUTOSUGGEST_DEPRECATED_START_WIDGET_WARNING_SHOWN=true
fi
autosuggest_start
}
zle -N autosuggest-start _zsh_autosuggest_deprecated_start_widget
#----------------#
# Widget Helpers #
#----------------#
# Bind a single widget to an autosuggest widget, saving a reference to the original widget
_zsh_autosuggest_bind_widget() {
local widget=$1
local autosuggest_function=$2
local prefix=$ZSH_AUTOSUGGEST_ORIGINAL_WIDGET_PREFIX
local action
case $widgets[$widget] in
# Already bound
user:_zsh_autosuggest_(bound|orig)_*);;
# User-defined widget
user:*)
zle -N $prefix$widget ${widgets[$widget]#*:}
;;
# Built-in widget
builtin)
eval "_zsh_autosuggest_orig_$widget() { zle .$widget }"
zle -N $prefix$widget _zsh_autosuggest_orig_$widget
;;
# Completion widget
completion:*)
eval "zle -C $prefix$widget ${${widgets[$widget]#*:}/:/ }"
;;
esac
# Set up widget to call $autosuggest_function if it exists
# Otherwise just call the original widget
if [ -n "$autosuggest_function" ]; then;
action=$autosuggest_function;
else;
action="zle $prefix$widget \$@"
fi
# Create new function for the widget that highlights and calls the action
eval "_zsh_autosuggest_bound_$widget() {
_zsh_autosuggest_highlight_reset
$action
_zsh_autosuggest_highlight_apply
}"
# Create the bound widget
zle -N $widget _zsh_autosuggest_bound_$widget
}
# Map all configured widgets to the right autosuggest widgets
_zsh_autosuggest_bind_widgets() {
local widget;
# Find every widget we might want to bind and bind it appropriately
for widget in ${${(f)"$(builtin zle -la)"}:#(.*|_*|orig-*|autosuggest-*|$ZSH_AUTOSUGGEST_ORIGINAL_WIDGET_PREFIX*|run-help|which-command|beep|set-local-history|yank)}; do
if [ ${ZSH_AUTOSUGGEST_MODIFY_WIDGETS[(r)$widget]} ]; then
_zsh_autosuggest_bind_widget $widget _zsh_autosuggest_modify
elif [ ${ZSH_AUTOSUGGEST_CLEAR_WIDGETS[(r)$widget]} ]; then
_zsh_autosuggest_bind_widget $widget _zsh_autosuggest_clear
elif [ ${ZSH_AUTOSUGGEST_ACCEPT_WIDGETS[(r)$widget]} ]; then
_zsh_autosuggest_bind_widget $widget _zsh_autosuggest_accept
elif [ ${ZSH_AUTOSUGGEST_PARTIAL_ACCEPT_WIDGETS[(r)$widget]} ]; then
_zsh_autosuggest_bind_widget $widget _zsh_autosuggest_partial_accept
else
_zsh_autosuggest_bind_widget $widget
fi
done
}
# Given the name of a widget, invoke the original we saved, if it exists
_zsh_autosuggest_invoke_original_widget() {
local original_widget_name="$ZSH_AUTOSUGGEST_ORIGINAL_WIDGET_PREFIX$1"
if [ $widgets[$original_widget_name] ]; then
zle $original_widget_name
fi
}
#--------------#
# Highlighting #
#--------------#
# If there was a highlight, remove it
_zsh_autosuggest_highlight_reset() {
if [ -n "$_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT" ]; then
region_highlight=("${(@)region_highlight:#$_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT}")
unset _ZSH_AUTOSUGGEST_LAST_HIGHLIGHT
fi
}
# If there's a suggestion, highlight it
_zsh_autosuggest_highlight_apply() {
if [ $#POSTDISPLAY -gt 0 ]; then
_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT="$#BUFFER $(($#BUFFER + $#POSTDISPLAY)) $ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE"
region_highlight+=($_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT)
else
unset _ZSH_AUTOSUGGEST_LAST_HIGHLIGHT
fi
}
#------------------------------------#
# Autosuggest Widget Implementations #
#------------------------------------#
# Clear the suggestion
_zsh_autosuggest_clear() {
# Remove the suggestion
unset POSTDISPLAY
_zsh_autosuggest_invoke_original_widget $WIDGET
}
# Modify the buffer and get a new suggestion
_zsh_autosuggest_modify() {
# Original widget modifies the buffer
_zsh_autosuggest_invoke_original_widget $WIDGET
# Get a new suggestion if the buffer is not empty after modification
local suggestion
if [ $#BUFFER -gt 0 ]; then
suggestion=$(_zsh_autosuggest_suggestion $BUFFER)
fi
# Add the suggestion to the POSTDISPLAY
if [ -n "$suggestion" ]; then
POSTDISPLAY=${suggestion#$BUFFER}
else
unset POSTDISPLAY
fi
}
# Accept the entire suggestion
_zsh_autosuggest_accept() {
# Only accept if the cursor is at the end of the buffer
if [ $CURSOR -eq $#BUFFER ]; then
# Add the suggestion to the buffer
BUFFER="$BUFFER$POSTDISPLAY"
# Remove the suggestion
unset POSTDISPLAY
# Move the cursor to the end of the buffer
CURSOR=${#BUFFER}
fi
_zsh_autosuggest_invoke_original_widget $WIDGET
}
# Partially accept the suggestion
_zsh_autosuggest_partial_accept() {
# Save the contents of the buffer so we can restore later if needed
local original_buffer=$BUFFER
# Temporarily accept the suggestion.
BUFFER="$BUFFER$POSTDISPLAY"
# Original widget moves the cursor
_zsh_autosuggest_invoke_original_widget $WIDGET
# If we've moved past the end of the original buffer
if [ $CURSOR -gt $#original_buffer ]; then
# Set POSTDISPLAY to text right of the cursor
POSTDISPLAY=$RBUFFER
# Clip the buffer at the cursor
BUFFER=$LBUFFER
else
# Restore the original buffer
BUFFER=$original_buffer
fi
}
_zsh_autosuggest_widget_accept() {
_zsh_autosuggest_highlight_reset
_zsh_autosuggest_accept
_zsh_autosuggest_highlight_apply
}
_zsh_autosuggest_widget_clear() {
_zsh_autosuggest_highlight_reset
_zsh_autosuggest_clear
_zsh_autosuggest_highlight_apply
}
zle -N autosuggest-accept _zsh_autosuggest_widget_accept
zle -N autosuggest-clear _zsh_autosuggest_widget_clear
2016-02-06 06:14:08 +08:00
#------------#
# Suggestion #
#------------#
# Get a suggestion from history that matches a given prefix
_zsh_autosuggest_suggestion() {
setopt localoptions extendedglob
# Escape the prefix (requires EXTENDED_GLOB)
local prefix=${1//(#m)[\][()|\\*?#<>~^]/\\$MATCH}
# Get all history items (reversed) that match pattern $prefix*
local history_matches
history_matches=(${history[(R)$prefix*]})
# Echo the first item that matches
echo ${history_matches[1]}
}
#-------#
# Start #
#-------#
# Start the autosuggestion widgets
autosuggest_start() {
_zsh_autosuggest_check_deprecated_config
_zsh_autosuggest_bind_widgets
}