helix/book/src/keymap.md

Keymap

Normal mode

Movement

NOTE: f, F, t and T are not confined to the current line.

Key	Description
h, Left	Move left
j, Down	Move down
k, Up	Move up
l, Right	Move right
w	Move next word start
b	Move previous word start
e	Move next word end
W	Move next WORD start
B	Move previous WORD start
E	Move next WORD end
t	Find 'till next char
f	Find next char
T	Find 'till previous char
F	Find previous char
Home	Move to the start of the line
End	Move to the end of the line
PageUp	Move page up
PageDown	Move page down
Ctrl-u	Move half page up
Ctrl-d	Move half page down
Ctrl-i	Jump forward on the jumplist TODO: conflicts tab
Ctrl-o	Jump backward on the jumplist
v	Enter select (extend) mode
g	Enter goto mode
m	Enter match mode
:	Enter command mode
z	Enter view mode
Ctrl-w	Enter window mode (maybe will be remove for spc w w later)
Space	Enter space mode
K	Show documentation for the item under the cursor

Changes

Key	Description
r	Replace with a character
R	Replace with yanked text
~	Switch case of the selected text
```	Set the selected text to upper case
`Alt-``	Set the selected text to lower case
i	Insert before selection
a	Insert after selection (append)
I	Insert at the start of the line
A	Insert at the end of the line
o	Open new line below selection
o	Open new line above selection
u	Undo change
U	Redo change
y	Yank selection
p	Paste after selection
P	Paste before selection
>	Indent selection
<	Unindent selection
=	Format selection
d	Delete selection
c	Change selection (delete and enter insert mode)

Selection manipulation

Key	Description
s	Select all regex matches inside selections
S	Split selection into subselections on regex matches
Alt-s	Split selection on newlines
;	Collapse selection onto a single cursor
Alt-;	Flip selection cursor and anchor
%	Select entire file
x	Select current line, if already selected, extend to next line
X	Extend selection to line bounds (line-wise selection)
	Expand selection to parent syntax node TODO: pick a key
J	join lines inside selection
K	keep selections matching the regex TODO: overlapped by hover help
Space	keep only the primary selection TODO: overlapped by space mode
Ctrl-c	Comment/uncomment the selections

Search

TODO: The search implementation isn't ideal yet -- we don't support searching in reverse, or searching via smartcase.

Key	Description
/	Search for regex pattern
n	Select next search match
N	Add next search match to selection
*	Use current selection as the search pattern

Diagnostics

NOTE: [ and ] will likely contain more pair mappings in the style of vim-unimpaired

Key	Description
[d	Go to previous diagnostic
]d	Go to next diagnostic
[D	Go to first diagnostic in document
]D	Go to last diagnostic in document

Select / extend mode

I'm still pondering whether to keep this mode or not. It changes movement commands to extend the existing selection instead of replacing it.

NOTE: It's a bit confusing at the moment because extend hasn't been implemented for all movement commands yet.

View mode

View mode is intended for scrolling and manipulating the view without changing the selection.

Key	Description
z , c	Vertically center the line
t	Align the line to the top of the screen
b	Align the line to the bottom of the screen
m	Align the line to the middle of the screen (horizontally)
j	Scroll the view downwards
k	Scroll the view upwards

Goto mode

Jumps to various locations.

NOTE: Some of these features are only available with the LSP present.

Key	Description
g	Go to the start of the file
e	Go to the end of the file
h	Go to the start of the line
l	Go to the end of the line
s	Go to first non-whitespace character of the line
t	Go to the top of the screen
m	Go to the middle of the screen
b	Go to the bottom of the screen
d	Go to definition
y	Go to type definition
r	Go to references
i	Go to implementation
a	Go to the last accessed/alternate file

Match mode

Enter this mode using m from normal mode. See the relavant section in Usage for an explanation about surround and textobject usage.

Key	Description
m	Goto matching bracket
s <char>	Surround current selection with <char>
r <from><to>	Replace surround character <from> with <to>
d <char>	Delete surround character <char>
a <object>	Select around textobject
i <object>	Select inside textobject

Object mode

TODO: Mappings for selecting syntax nodes (a superset of [).

Window mode

This layer is similar to vim keybindings as kakoune does not support window.

Key	Description
w, Ctrl-w	Switch to next window
v, Ctrl-v	Vertical right split
h, Ctrl-h	Horizontal bottom split
q, Ctrl-q	Close current window

Space mode

This layer is a kludge of mappings I had under leader key in neovim.

Key	Description
f	Open file picker
b	Open buffer picker
s	Open symbol picker (current document)
w	Enter window mode
space	Keep primary selection TODO: it's here because space mode replaced it
p	paste system clipboard after selections
P	paste system clipboard before selections
y	join and yank selections to clipboard
Y	yank main selection to clipboard
R	replace selections by clipboard contents

Picker

Keys to use within picker.

Key	Description
Up, Ctrl-p	Previous entry
Down, Ctrl-n	Next entry
Ctrl-space	Filter options
Enter	Open selected
Ctrl-h	Open horizontally
Ctrl-v	Open vertically
Escape, Ctrl-c	Close picker