Awesome Emacs Keymap (emacs-mcx)

This Visual Studio Code extension provides emacs-like keybindings and operations. This is inspired by the great vscode extension by hiro-sun and its forks such as vscode-emacs-friendly by Sebastian Zaha, vscode-emacs-improved by rkwan94 and vscode-emacs-neon by NotKyon.

Though there were such great extensions, this extension is written from scratch because it was hard to achieve the goal listed below by extending the existent code base.

This extension aims

to provide emacs-like keybindings
to be fully compatible with multi cursor
to support kill-ring integrated with the system clipboard
to support prefix argument
to support sexp
to fix some bugs in the existing extensions such as
- mark-mode states are shared amoung all editors

This extension makes use of code in the existent extensions listed above and, in addition, VSCode Vim extension. Thanks to all these great works. Mainly, almost all keybinding settings are derived from vscode-emacs-friendly by Sebastian Zaha.

Keymaps

Move commands

Command	Prefix argument	Desc
`C-f`	✓	Move forward (forward-char)
`C-b`	✓	Move backward (backward-char)
`C-n`	✓	Move to the next line (next-line)
`C-p`	✓	Move to the previous line (previous-line)
`C-a`	✓	Move to the beginning of line (move-beginning-of-line)
`C-e`	✓	Move to the end of line (move-end-of-line)
`M-f`	✓	Move forward by one word unit (forward-word)
`M-b`	✓	Move backward by one word unit (backward-word)
`C-v`	✓	Scroll down by one screen unit (scroll-up-command)
`M-v`	✓	Scroll up by one screen unit (scroll-down-command)
`M-g g` (`M-g M-g`)		Jump to line (command palette)
`M-g n` (`M-g M-n`, C-x `)		Jump to next error
`M-g p` (`M-g M-p`)		Jump to previous error
`C-l`		Center screen on current line (recenter-top-bottom)

Search Commands

Command	Desc
`C-s`	Search forward
`C-r`	Search backward
`M-S-5` (`M-%` with US keyboard)	Replace
`C-Enter`	Replace One Match (In replace dialog)
`C-M-n`	Add selection to next find match
`C-M-p`	Add selection to previous find match

Edit commands

Command	Prefix argument	Desc
`C-d`	✓	Delete right (DEL)
`C-h`	✓	Delete left (BACKSPACE)
`M-d`	✓	Kill word (kill-word)
`M-Bksp`	✓	Kill word left (backward-kill-word)
`C-k`	✓	Kill from the current cursor to the end of line (kill-line)
`C-S-Bksp`		Kill whole line (kill-whole-line)
`C-w`		Kill region
`M-w`		Copy region to kill ring
`C-y`		Yank
`M-y`		Yank pop
`C-o`		Open line
`C-j`	✓	New line
`C-m`	✓	New line
`C-x C-o`		Delete blank lines around (delete-blank-lines)
`C-x h`		Select All
`C-x u` (`C-/`)		Undo
`C-;`		Toggle line comment in and out
`M-;`		Toggle region comment in and out
`C-x C-l` (`M-l`)		Convert to lower case (On the Emacs' original behavior, `C-x C-l` and `M-l` are assigned to the different functionalities. However, this extension assigns these keys to the same `emacs-mcx.transformToLowercase` command which calls `editor.action.transformToLowercase` command internally and works similarly to both the original Emacs' functionalities based on the context. Uppercase (below) is same)
`C-x C-u` (`M-u`)		Convert to upper case

Other Commands

Command	Desc
`C-g` (`ESC`)	Cancel
`C-space`	Set mark
`C-quote`	IntelliSense Suggestion
`M-x`	Open command palette
`C-M-SPC`	Toggle SideBar visibility
`C-x z`	Toggle Zen Mode

File Commands

Command	Desc
`C-x C-s`	Save
`C-x C-w`	Save as
`C-x C-n`	Open new window

Tab / Buffer Manipulation Commands

Command	Desc
`C-x b`	Switch to another open buffer
`C-x C-f`	QuickOpen a file
`C-x k`	Close current tab (buffer)
`C-x C-k`	Close all tabs
`C-x 0`	Close editors in the current group.
`C-x 1`	Close editors in other (split) group.
`C-x 2`	Split editor horizontal
`C-x 3`	Split editor vertical
`C-x 4`	Toggle split layout (vertical to horizontal)
`C-x o`	Focus other split editor

Prefix argument

Command	Desc
`C-u`	universal-argument (See https://www.gnu.org/software/emacs/manual/html_node/emacs/Arguments.html for detail)

sexp

Command	Prefix argument	Desc
`C-M-f`	✓	Move forward by one s-exp
`C-M-b`	✓	Move backward by one s-exp

This extension makes use of paredit.js to provide sexp functionalities. Thank you for this great library.

'when' clause context

This extension provides mark-mode functionality and you can use emacs-mcx.inMarkMode in when clause of your keybinding settings in order to check whether or not mark-mode is enabled.

Configs

This extension has some custom settings named with a prefix emacs-mcx. You can configure those settings.

`emacs-mcx.strictEmacsMove`

If set to true, the original emacs's cursor movements are strictly simulated. If set to false, the VSCode's native cursor movements are preserved. For example, if set to true, when you type C-a, the cursor moves to the beginning of the line (Emacs' original behavior). If set to false, on the other hand, the cursor move to the first non-empty character in the line (VSCode's native behavior of Home key).

`emacs-mcx.killRingMax`

Configures the maximum number of kill ring entries. The default is 60.

`emacs-mcx.debug.*`

Configurations for debugging.

Conflicts with default key bindings

ctrl+d: editor.action.addSelectionToNextFindMatch => Use ctrl+alt+n instead;
ctrl+g: workbench.action.gotoLine => Use alt+g g instead;
ctrl+b: workbench.action.toggleSidebarVisibility => Use ctrl+alt+space instead;
ctrl+j: workbench.action.togglePanel => Use ctrl+x j instead;
ctrl+space: toggleSuggestionDetails, editor.action.triggerSuggest => Use ctrl+' instead;
ctrl+x: editor.action.clipboardCutAction => Use ctrl+w instead;
ctrl+v: editor.action.clipboardPasteAction => Use ctrl+y instead;
ctrl+k: editor.debug.action.showDebugHover, editor.action.trimTrailingWhitespace, editor.action.showHover, editor.action.removeCommentLine, editor.action.addCommentLine, editor.action.openDeclarationToTheSide;
ctrl+k z: workbench.action.toggleZenMode => Use ctrl+x z instead;
ctrl+y: redo;
ctrl+m: editor.action.toggleTabFocusMode;
ctrl+/: editor.action.commentLine => Use ctrl+; instead;
ctrl+p & ctrl+e: workbench.action.quickOpen => Use ctrl+x b instead;
ctrl+p: workbench.action.quickOpenNavigateNext => Use ctrl+n instead.
ctrl+o: workbench.action.files.openFileFolder;

Awesome Emacs Keymap

Yuichiro Tsuchiya