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Share some bindings between vi- and emacs-mode

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This undoes the inheritance since it shared too much.

The idea here is to share bindings that aren't something the editors we're inspired by do - there's no "execute" in vi.
The basic editing and moving bindings are now vi-style in vi-mode and emacs-style in default mode.
This commit is contained in:
Fabian Homborg 2016-05-25 13:09:33 +02:00
parent b1f576deae
commit 93b9e7443e
6 changed files with 218 additions and 214 deletions
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53
doc_src/index.hdr.in
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@ -953,33 +953,34 @@ For a list of all builtins, functions and commands shipped with fish, see the <a
The `fish` editor features copy and paste, a searchable history and many editor functions that can be bound to special keyboard shortcuts.
Similar to bash, fish has Emacs and Vi editing modes. The default editing mode is Emacs. You can switch to Vi mode with `fish_vi_key_bindings` and switch back with `fish_default_key_bindings`.
Similar to bash, fish has Emacs and Vi editing modes. The default editing mode is Emacs. You can switch to Vi mode with `fish_vi_key_bindings` and switch back with `fish_default_key_bindings`. You can also make your own key bindings by creating a function and setting $fish_key_bindings to its name. For example:
\fish
function hybrid_bindings --description "Vi-style bindings that inherit emacs-style bindings in all modes"
for mode in default insert visual
fish_default_key_bindings -M $mode
end
fish_vi_key_bindings
end
set -g fish_key_bindings hybrid_bindings
\endfish
\subsection emacs-mode Emacs mode commands
\subsection shared-binds Shared bindings
Some bindings are shared between emacs- and vi-mode because they aren't text editing bindings or because what Vi/Vim does for a particular key doesn't make sense for a shell.
- @key{Tab} <a href="#completion">completes</a> the current token. @key{Shift, Tab} completes the current token and starts the pager's search mode.
- @key{Home} or @key{Control,A} moves the cursor to the beginning of the line.
- @key{End} or @key{Control,E} moves to the end of line. If the cursor is already at the end of the line, and an autosuggestion is available, @key{End} or @key{Control,E} accepts the autosuggestion.
- @cursor_key{&larr;,Left} (or @key{Control,B}) and @cursor_key{&rarr;,Right} (or @key{Control,F}) move the cursor left or right by one character. If the cursor is already at the end of the line, and an autosuggestion is available, the @cursor_key{&rarr;,Right} key and the @key{Control,F} combination accept the suggestion.
- @key{Alt,&larr;,Left} and @key{Alt,&rarr;,Right} move the cursor one word left or right, or moves forward/backward in the directory history if the command line is empty. If the cursor is already at the end of the line, and an autosuggestion is available, @key{Alt,&rarr;,Right} (or @key{Alt,F}) accepts the first word in the suggestion.
- @cursor_key{&uarr;,Up} and @cursor_key{&darr;,Down} search the command history for the previous/next command containing the string that was specified on the commandline before the search was started. If the commandline was empty when the search started, all commands match. See the <a href='#history'>history</a> section for more information on history searching.
- @key{Alt,&uarr;,Up} and @key{Alt,&darr;,Down} search the command history for the previous/next token containing the token under the cursor before the search was started. If the commandline was not on a token when the search started, all tokens match. See the <a href='#history'>history</a> section for more information on history searching.
- @key{Delete} and @key{Backspace} removes one character forwards or backwards respectively.
- @key{Control,C} deletes the entire line.
- @key{Control,D} delete one character to the right of the cursor. If the command line is empty, @key{Control,D} will exit fish.
- @key{Control,K} moves contents from the cursor to the end of line to the <a href="#killring">killring</a>.
- @key{Control,U} moves contents from the beginning of line to the cursor to the <a href="#killring">killring</a>.
- @key{Control,L} clears and repaints the screen.
@ -988,18 +989,30 @@ Similar to bash, fish has Emacs and Vi editing modes. The default editing mode i
- @key{Alt,D} moves the next word to the <a href="#killring">killring</a>.
- @key{Alt,W} prints a short description of the command under the cursor.
- @key{Alt,H} (or @key{F1}) shows the manual page for the current command, if one exists.
- @key{Alt,L} lists the contents of the current directory, unless the cursor is over a directory argument, in which case the contents of that directory will be listed.
- @key{Alt,P} adds the string '`| less;`' to the end of the job under the cursor. The result is that the output of the command will be paged.
- @key{Alt,W} prints a short description of the command under the cursor.
\subsection emacs-mode Emacs mode commands
- @key{Home} or @key{Control,A} moves the cursor to the beginning of the line.
- @key{End} or @key{Control,E} moves to the end of line. If the cursor is already at the end of the line, and an autosuggestion is available, @key{End} or @key{Control,E} accepts the autosuggestion.
- @cursor_key{&larr;,Left} (or @key{Control,B}) and @cursor_key{&rarr;,Right} (or @key{Control,F}) move the cursor left or right by one character. If the cursor is already at the end of the line, and an autosuggestion is available, the @cursor_key{&rarr;,Right} key and the @key{Control,F} combination accept the suggestion.
- @key{Delete} and @key{Backspace} removes one character forwards or backwards respectively.
- @key{Control,K} moves contents from the cursor to the end of line to the <a href="#killring">killring</a>.
- @key{Alt,C} capitalizes the current word.
- @key{Alt,U} makes the current word uppercase.
- @key{Alt,H} (or @key{F1}) shows the manual page for the current command, if one exists.
- @key{Control, t} transposes the last two characters
- @key{Alt,t} transposes the last two words
@ -1010,7 +1023,7 @@ You can change these key bindings using the <a href="commands.html#bind">bind</a
\subsection vi-mode Vi mode commands
Vi mode allows for the use of Vi-like commands at the prompt. Initially, <a href="#vi-mode-insert">insert mode</a> is active. @key{Escape} enters <a href="#vi-mode-command">command mode</a>. The commands available in command, insert and visual mode are described below. Vi mode builds on top of <a href="#emacs-mode">Emacs mode</a>, so all keybindings mentioned there that do not contradict the ones mentioned here also work.
Vi mode allows for the use of Vi-like commands at the prompt. Initially, <a href="#vi-mode-insert">insert mode</a> is active. @key{Escape} enters <a href="#vi-mode-command">command mode</a>. The commands available in command, insert and visual mode are described below. Vi mode shares <a href="#shared-binds">some bindings</a> with <a href="#emacs-mode">Emacs mode</a>.
When in vi-mode, the <a href="fish_mode_prompt.html">`fish_mode_prompt`</a> function will display a mode indicator to the left of the prompt. The `fish_vi_cursor` function is available to change the cursor's shape depending on the mode in supported terminals.
@ -1047,16 +1060,8 @@ Command mode is also known as normal mode.
\subsubsection vi-mode-insert Insert mode
- @key{Tab} <a href="#completion">completes</a> the current token.
- @key{Escape} or @key{Control,C} enters <a href="#vi-mode-command">command mode</a>.
- @cursor_key{&uarr;,Up} and @cursor_key{&darr;,Down} search the command history. See the <a href='#history'>history</a> section for more information on history searching.
- @key{Control,W} moves the previous word to the <a href="#killring">killring</a>.
- @key{Control,U} moves contents from the beginning of line to the cursor to the <a href="#killring">killring</a>.
- @key{Control,x} moves the cursor to the end of the line. If an autosuggestion is available, it will be accepted completely.
\subsubsection vi-mode-visual Visual mode

91
share/functions/__fish_shared_key_bindings.fish Normal file
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@ -0,0 +1,91 @@
function __fish_shared_key_bindings -d "Bindings shared between emacs and vi mode"
# These are some bindings that are supposed to be shared between vi mode and default mode.
# They are supposed to be unrelated to text-editing (or movement).
# This takes $argv so the vi-bindings can pass the mode they are valid in.
bind $argv \cy yank
bind $argv \ey yank-pop
# Left/Right arrow
bind $argv -k right forward-char
bind $argv -k left backward-char
bind $argv \e\[C forward-char
bind $argv \e\[D backward-char
# Some terminals output these when they're in in keypad mode.
bind $argv \eOC forward-char
bind $argv \eOD backward-char
# Interaction with the system clipboard.
bind $argv \cx fish_clipboard_copy
bind $argv \cv fish_clipboard_paste
bind $argv \e cancel
bind $argv \cy yank
bind $argv \ey yank-pop
bind $argv \t complete
# shift-tab does a tab complete followed by a search.
bind $argv --key btab complete-and-search
bind $argv \e\n "commandline -i \n"
bind $argv \e\r "commandline -i \n"
bind $argv -k down down-or-search
bind $argv -k up up-or-search
bind $argv \e\[A up-or-search
bind $argv \e\[B down-or-search
bind $argv \eOA up-or-search
bind $argv \eOB down-or-search
# Alt-left/Alt-right
bind $argv \e\eOC nextd-or-forward-word
bind $argv \e\eOD prevd-or-backward-word
bind $argv \e\e\[C nextd-or-forward-word
bind $argv \e\e\[D prevd-or-backward-word
bind $argv \eO3C nextd-or-forward-word
bind $argv \eO3D prevd-or-backward-word
bind $argv \e\[3C nextd-or-forward-word
bind $argv \e\[3D prevd-or-backward-word
bind $argv \e\[1\;3C nextd-or-forward-word
bind $argv \e\[1\;3D prevd-or-backward-word
bind $argv \e\[1\;9C nextd-or-forward-word #iTerm2
bind $argv \e\[1\;9D prevd-or-backward-word #iTerm2
# Alt-up/Alt-down
bind $argv \e\eOA history-token-search-backward
bind $argv \e\eOB history-token-search-forward
bind $argv \e\e\[A history-token-search-backward
bind $argv \e\e\[B history-token-search-forward
bind $argv \eO3A history-token-search-backward
bind $argv \eO3B history-token-search-forward
bind $argv \e\[3A history-token-search-backward
bind $argv \e\[3B history-token-search-forward
bind $argv \e\[1\;3A history-token-search-backward
bind $argv \e\[1\;3B history-token-search-forward
bind $argv \e\[1\;9A history-token-search-backward # iTerm2
bind $argv \e\[1\;9B history-token-search-forward # iTerm2
# Bash compatibility
# https://github.com/fish-shell/fish-shell/issues/89
bind $argv \e. history-token-search-backward
bind $argv \el __fish_list_current_token
bind $argv \ew 'set tok (commandline -pt); if test $tok[1]; echo; whatis $tok[1]; commandline -f repaint; end'
bind $argv \cl 'clear; commandline -f repaint'
bind $argv \cc __fish_cancel_commandline
bind $argv \cu backward-kill-line
bind $argv \cw backward-kill-path-component
bind $argv \ed 'set -l cmd (commandline); if test -z "$cmd"; echo; dirh; commandline -f repaint; else; commandline -f kill-word; end'
bind $argv \cd delete-or-exit
# Allow reading manpages by pressing F1 (many GUI applications) or Alt+h (like in zsh).
bind $argv -k f1 __fish_man_page
bind $argv \eh __fish_man_page
# This will make sure the output of the current command is paged using the default pager when you press Meta-p.
# If none is set, less will be used.
bind $argv \ep '__fish_paginate'
# Make it easy to turn an unexecuted command into a comment in the shell history. Also,
# remove the commenting chars so the command can be further edited then executed.
bind $argv \e\# __fish_toggle_comment_commandline
end

216
share/functions/fish_default_key_bindings.fish
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@ -1,160 +1,92 @@
function fish_default_key_bindings -d "Default (Emacs-like) key bindings for fish"
if not set -q argv[1]
if test "$fish_key_bindings" != "fish_default_key_bindings"
# Allow the user to set the variable universally
set -q fish_key_bindings
or set -g fish_key_bindings
set fish_key_bindings fish_default_key_bindings # This triggers the handler, which calls us again and ensures the user_key_bindings are executed
return
end
# Clear earlier bindings, if any
bind --erase --all
end
if not set -q argv[1]
if test "$fish_key_bindings" != "fish_default_key_bindings"
# Allow the user to set the variable universally
set -q fish_key_bindings; or set -g fish_key_bindings
set fish_key_bindings fish_default_key_bindings # This triggers the handler, which calls us again and ensures the user_key_bindings are executed
return
end
# Clear earlier bindings, if any
bind --erase --all
end
# This is the default binding, i.e. the one used if no other binding matches
bind $argv "" self-insert
# These are shell-specific bindings that we share with vi mode.
__fish_shared_key_bindings
bind $argv \n execute
bind $argv \r execute
# This is the default binding, i.e. the one used if no other binding matches
bind $argv "" self-insert
bind $argv \ck kill-line
bind $argv \cy yank
bind $argv \cx fish_clipboard_copy
bind $argv \cv fish_clipboard_paste
bind $argv \t complete
bind $argv \n execute
bind $argv \r execute
bind $argv \e\n "commandline -i \n"
bind $argv \e\r "commandline -i \n"
bind $argv \ck kill-line
bind $argv \e\[A up-or-search
bind $argv \e\[B down-or-search
bind $argv -k down down-or-search
bind $argv -k up up-or-search
bind $argv \eOC forward-char
bind $argv \eOD backward-char
bind $argv \e\[C forward-char
bind $argv \e\[D backward-char
bind $argv -k right forward-char
bind $argv -k left backward-char
# Some linux VTs output these (why?)
bind $argv \eOA up-or-search
bind $argv \eOB down-or-search
bind $argv \eOC forward-char
bind $argv \eOD backward-char
bind $argv -k dc delete-char
bind $argv -k backspace backward-delete-char
bind $argv \x7f backward-delete-char
bind $argv \e\[C forward-char
bind $argv \e\[D backward-char
bind $argv -k right forward-char
bind $argv -k left backward-char
bind $argv \e\[H beginning-of-line
bind $argv \e\[F end-of-line
bind $argv -k dc delete-char
bind $argv -k backspace backward-delete-char
bind $argv \x7f backward-delete-char
# for PuTTY
# https://github.com/fish-shell/fish-shell/issues/180
bind $argv \e\[1~ beginning-of-line
bind $argv \e\[3~ delete-char
bind $argv \e\[4~ end-of-line
bind $argv \e\[H beginning-of-line
bind $argv \e\[F end-of-line
# OS X SnowLeopard doesn't have these keys. Don't show an annoying error message.
bind $argv -k home beginning-of-line 2> /dev/null
bind $argv -k end end-of-line 2> /dev/null
bind $argv \e\[3\;2~ backward-delete-char # Mavericks Terminal.app shift-delete
# for PuTTY
# https://github.com/fish-shell/fish-shell/issues/180
bind $argv \e\[1~ beginning-of-line
bind $argv \e\[3~ delete-char
bind $argv \e\[4~ end-of-line
bind $argv \ca beginning-of-line
bind $argv \ce end-of-line
bind $argv \ch backward-delete-char
bind $argv \cp up-or-search
bind $argv \cn down-or-search
bind $argv \cf forward-char
bind $argv \cb backward-char
bind $argv \ct transpose-chars
bind $argv \et transpose-words
bind $argv \eu upcase-word
# OS X SnowLeopard doesn't have these keys. Don't show an annoying error message.
bind $argv -k home beginning-of-line 2>/dev/null
bind $argv -k end end-of-line 2>/dev/null
bind $argv \e\[3\;2~ backward-delete-char # Mavericks Terminal.app shift-delete
# This clashes with __fish_list_current_token
# bind $argv \el downcase-word
bind $argv \ec capitalize-word
bind $argv \e\x7f backward-kill-word
bind $argv \eb backward-word
bind $argv \ef forward-word
bind $argv \e\[1\;5C forward-word
bind $argv \e\[1\;5D backward-word
bind $argv -k ppage beginning-of-history
bind $argv -k npage end-of-history
bind $argv \e\< beginning-of-buffer
bind $argv \e\> end-of-buffer
bind $argv \e\eOC nextd-or-forward-word
bind $argv \e\eOD prevd-or-backward-word
bind $argv \e\e\[C nextd-or-forward-word
bind $argv \e\e\[D prevd-or-backward-word
bind $argv \eO3C nextd-or-forward-word
bind $argv \eO3D prevd-or-backward-word
bind $argv \e\[3C nextd-or-forward-word
bind $argv \e\[3D prevd-or-backward-word
bind $argv \e\[1\;3C nextd-or-forward-word
bind $argv \e\[1\;3D prevd-or-backward-word
bind \ed forward-kill-word
bind \ed kill-word
bind $argv \e\eOA history-token-search-backward
bind $argv \e\eOB history-token-search-forward
bind $argv \e\e\[A history-token-search-backward
bind $argv \e\e\[B history-token-search-forward
bind $argv \eO3A history-token-search-backward
bind $argv \eO3B history-token-search-forward
bind $argv \e\[3A history-token-search-backward
bind $argv \e\[3B history-token-search-forward
bind $argv \e\[1\;3A history-token-search-backward
bind $argv \e\[1\;3B history-token-search-forward
# escape cancels stuff
bind \e cancel
bind $argv \ca beginning-of-line
bind $argv \ce end-of-line
bind $argv \ey yank-pop
bind $argv \ch backward-delete-char
bind $argv \cp up-or-search
bind $argv \cn down-or-search
bind $argv \cf forward-char
bind $argv \cb backward-char
bind $argv \ct transpose-chars
bind $argv \et transpose-words
bind $argv \eu upcase-word
# Ignore some known-bad control sequences
# https://github.com/fish-shell/fish-shell/issues/1917
bind \e\[I 'begin;end'
bind \e\[O 'begin;end'
# This clashes with __fish_list_current_token
# bind $argv \el downcase-word
bind $argv \ec capitalize-word
bind $argv \e\x7f backward-kill-word
bind $argv \eb backward-word
bind $argv \ef forward-word
bind $argv \e\[1\;5C forward-word
bind $argv \e\[1\;5D backward-word
bind $argv \e\[1\;9A history-token-search-backward # iTerm2
bind $argv \e\[1\;9B history-token-search-forward # iTerm2
bind $argv \e\[1\;9C nextd-or-forward-word #iTerm2
bind $argv \e\[1\;9D prevd-or-backward-word #iTerm2
# Bash compatibility
# https://github.com/fish-shell/fish-shell/issues/89
bind $argv \e. history-token-search-backward
bind $argv -k ppage beginning-of-history
bind $argv -k npage end-of-history
bind $argv \e\< beginning-of-buffer
bind $argv \e\> end-of-buffer
bind $argv \el __fish_list_current_token
bind $argv \ew 'set tok (commandline -pt); if test $tok[1]; echo; whatis $tok[1]; commandline -f repaint; end'
bind $argv \cl 'clear; commandline -f repaint'
bind $argv \cc __fish_cancel_commandline
bind $argv \cu backward-kill-line
bind $argv \cw backward-kill-path-component
bind $argv \ed 'set -l cmd (commandline); if test -z "$cmd"; echo; dirh; commandline -f repaint; else; commandline -f kill-word; end'
bind $argv \cd delete-or-exit
bind \ed forward-kill-word
bind \ed kill-word
# Allow reading manpages by pressing F1 (many GUI applications) or Alt+h (like in zsh)
bind $argv -k f1 __fish_man_page
bind $argv \eh __fish_man_page
# This will make sure the output of the current command is paged using the default pager when you press Meta-p
# If none is set, less will be used
bind $argv \ep '__fish_paginate'
# shift-tab does a tab complete followed by a search
bind $argv --key btab complete-and-search
# escape cancels stuff
bind \e cancel
# Ignore some known-bad control sequences
# https://github.com/fish-shell/fish-shell/issues/1917
bind \e\[I 'begin;end'
bind \e\[O 'begin;end'
# term-specific special bindings
switch "$TERM"
case 'rxvt*'
bind $argv \e\[8~ end-of-line
bind $argv \eOc forward-word
bind $argv \eOd backward-word
end
# Make it easy to turn an unexecuted command into a comment in the shell history. Also,
# remove the commenting chars so the command can be further edited then executed.
bind \e\# __fish_toggle_comment_commandline
# term-specific special bindings
switch "$TERM"
case 'rxvt*'
bind $argv \e\[8~ end-of-line
bind $argv \eOc forward-word
bind $argv \eOd backward-word
end
end

59
share/functions/fish_vi_key_bindings.fish
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@ -1,10 +1,17 @@
function fish_vi_key_bindings --description 'vi-like key bindings for fish'
if test "$fish_key_bindings" != "fish_vi_key_bindings"
# Allow the user to set the variable universally
set -q fish_key_bindings; or set -g fish_key_bindings
set fish_key_bindings fish_vi_key_bindings # This triggers the handler, which calls us again and ensures the user_key_bindings are executed
return
end
# Allow any argument to skip setting the variable.
if not set -q argv[1]
# Allow just calling this function to correctly set the bindings.
# Because it's a rather discoverable name, users will execute it
# and without this would then have subtly broken bindings.
if test "$fish_key_bindings" != "fish_vi_key_bindings"
# Allow the user to set the variable universally
set -q fish_key_bindings
or set -g fish_key_bindings
set fish_key_bindings fish_vi_key_bindings # This triggers the handler, which calls us again and ensures the user_key_bindings are executed
return
end
end
# The default escape timeout is 300ms. But for users of Vi bindings that can be slightly
# annoying when trying to switch to Vi "normal" mode. So set a shorter timeout in this case
# unless the user has explicitly set the delay.
@ -17,14 +24,18 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
set init_mode $argv[1]
end
# Inherit default key bindings.
# Inherit shared key bindings.
# Do this first so vi-bindings win over default.
bind --erase --all
fish_default_key_bindings -M insert
fish_default_key_bindings -M default
for mode in insert default visual
__fish_shared_key_bindings -M $mode
end
bind -M insert \r execute
bind -M insert \n execute
bind -M insert "" self-insert
# Remove the default self-insert bindings in default mode
bind -e "" -M default
# Add way to kill current command line while in insert mode.
bind -M insert \cc __fish_cancel_commandline
# Add a way to switch from insert to normal (command) mode.
@ -34,17 +45,8 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
bind :q exit
bind \cd exit
bind -m insert \cc __fish_cancel_commandline
bind h backward-char
bind l forward-char
bind \e\[C forward-char
bind \e\[D backward-char
# Some terminals output these when they're in in keypad mode.
bind \eOC forward-char
bind \eOD backward-char
bind -k right forward-char
bind -k left backward-char
bind -M default h backward-char
bind -M default l forward-char
bind -m insert \n execute
bind -m insert \r execute
bind -m insert i force-repaint
@ -169,10 +171,6 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
bind P backward-char yank
bind gp yank-pop
### Overrides
# This is complete in vim
bind -M insert \cx end-of-line
bind '"*p' "commandline -i ( xsel -p; echo )[1]"
bind '"*P' backward-char "commandline -i ( xsel -p; echo )[1]"
@ -186,12 +184,6 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
#
# visual mode
#
bind -M visual \e\[C forward-char
bind -M visual \e\[D backward-char
bind -M visual -k right forward-char
bind -M visual -k left backward-char
bind -M insert \eOC forward-char
bind -M insert \eOD backward-char
bind -M visual h backward-char
bind -M visual l forward-char
@ -231,7 +223,4 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
# the commenting chars so the command can be further edited then executed.
bind -M default \# __fish_toggle_comment_commandline
bind -M visual \# __fish_toggle_comment_commandline
bind -M default \e\# __fish_toggle_comment_commandline
bind -M insert \e\# __fish_toggle_comment_commandline
bind -M visual \e\# __fish_toggle_comment_commandline
end

12
tests/bind.expect
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@ -80,18 +80,6 @@ expect_prompt -re {\r\nsuccess: default escape timeout\r\n} {
puts stderr "vi replace line, default timeout: long delay"
}
# Verify that a human can transpose words using \et (which is an emacs default
# binding but should be valid while in vi insert or normal mode).
send "echo abc def"
send "\033"
sleep 0.010
send "t\r"
expect_prompt -re {\r\ndef abc\r\n} {
puts "vi transpose words, default timeout: short delay"
} unmatched {
puts stderr "vi transpose words, default timeout: short delay"
}
# Test replacing a single character.
send "echo TEXT"
send "\033"

1
tests/bind.expect.out
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@ -4,7 +4,6 @@ emacs transpose words, default timeout: long delay
prime vi mode, default timeout
vi-mode default timeout set correctly
vi replace line, default timeout: long delay
vi transpose words, default timeout: short delay
vi mode replace char, default timeout: long delay
vi replace line, 100ms timeout: long delay
vi replace line, 100ms timeout: short delay