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README.md

Emacs Editor

Why emacs?

  1. Explore the unknown, just for fun!
  2. Org Mode
  3. Lisp Coding
  4. A top-level tutorial for Emacs(Chinese): https://nyk.ma/tags/emacs/
  5. A Beginner's Guide to Emacs(Chinese): https://github.com/emacs-tw/emacs-101-beginner-survival-guide

Screenshot

Useful Links

Install or Update

After deploying this nix flake, run the following command to install or update emacs:

doom sync

when in doubt, run doom sync!

Testing

via Justfile located at the root of this repo.

# testing
just emacs-test
just emacs-purge
just emacs-reload

# clear test data
just emacs-clean

Limits

  • It's too slow to start up and install(compile/build) packages.
    • I have to use emacs in daemon/client mode to avoid this issue.
  • It's too large in size, not suitable for servers.
    • So vim/neovim is still the best choice for servers.
  • Emacs's markdown-mode works not well with tables, see:
  • I use git command frequently, but doomemacs only autoupdates status of git diff / treemacs when using magit.
    • I have to learn magit to avoid this issue...
  • GitHub's orgmode support is not well, Markdown is better for GitHub.
    • Use markdown for repo's README.md, and use orgmode for my personal notes and docs only.

Cheetsheet

Here is the cheetsheet related to my DoomEmacs configs. Please read vim's common cheetsheet at ../README.md before reading the following.

Basics

Terminal(vterm) is useful in GUI mode, I use Zellij instead in terminal mode.

Action Shortcut
Popup Terminal(vterm) SPC + o + t
Open Terminal SPC + o + T
Open file tree sidebar SPC + o + p
Frame fullscreen SPC + t + F
Exit M-x C-c
Execute Command M-x(hold on Alt/option, and then press x)
Eval Lisp Code M-:(hold on Alt/option, and then press :)

Window Navigation

Action Shortcut
Split a window vertically and horizontally SPC w v/s
Move to a window in a specific direction Ctrl-w + h/j/k/l
Move a window to a specific direction Ctrl-w + H/J/K/L
Move to the next window SPC w w
Close the current window SPC w q
Rebalance all windows SPC w =
Set window's width(columns) 80 SPC w | (the Vertical line is escaped due to markdown's limits)
Set window's height 30 SPC w _

File Tree

Action Shortcut
Resize Treemacs's window > & <
Extra Wide Window W
Rename R
Delete File/Direcoty d
New File cf
New Directory cd
Go to parent u
Run shell command in for current node !
Refresh file tree gr
Copy project-path into pasteboard yp
Copy absolute-path into pasteboard ya
Copy relative-path into pasteboard yr
Copy file to another location yf
Move file to another location m
quit q

And bookmarks:

  • Add bookmarks in treemacs: b
  • Show Bookmark List: SPC s m

Splitting and Buffers

Action Shortcut
Buffer List <Space> + ,
Save all buffers(Tab) <Space> + b + S
Kill the current buffer <Space> + b + k
Kill all buffers <Space> + b + K

Editing and Formatting

Action Shortcut
Format Document <Space> + cf
Code Actions <Space> + ca
Rename <Space> + cr
Opening LSP symbols <Space> + cS
Show all LSP Errors <Space> + c + x/X
Show infinite undo history(really useful!) <Space> + s + u
Open filepath/URL at cursor gf
Find files by keyword in path <Space> + <Space>
Grep string in files (vertico + ripgrep) <Space> + sd

Image Preview(GUI mode only)

Use -, + to resize the image, r to rotate the image.

Search & replace

SPC s p foo C-; E C-c C-p :%s/foo/bar/g RET Z Z
  1. SPC s p: search in project
  2. foo: the keyword to search
  3. C-; E: exports what you’re looking at into a new buffer in grep-mode
  4. C-c C-p to run wgrep-change-to-wgrep-mode to make the search results writable.
  5. :%s/foo/bar/g RET: replace in the current buffer(just like neovim/vim)
  6. Z Z: to write all the changes to their respective files

Projects

easily switch between projects without exit emacs!

Action Shortcut
Switch between projects SPC + p + p
Browse the current project SPC + p + .
Add new project SPC + p + a

Workspaces

Very useful when run emacs in daemon/client modes

Action Shortcut
Switch between workspaces M-1/2/3/...(Alt-1/2/3/..)
New Workspace SPC + TAB + n
New Named Workspace SPC + TAB + N
Delete Workspace SPC + TAB + d
Display Workspaces bar blow SPC + TAB + TAB

Magit

https://github.com/magit/magit

Magit is a powerful tool that make git operations easy and intuitive.

Action Shortcut
Open Magit C-x g or SPC + g + g
Switch branch SPC + g + b
Show buffer's commit log SPC + g + L

Shortcuts in magit's pane:

When run git commit / git add / git push /... via magit, multiple Arguments can be set. Set arguments won't trigger a git command immediately. Magit will try to run a git command only after an Action key is pressed.

Action Shortcut
Quit the current Magit pane q
Show log l
Show current branch's log l + l
Show current reflog l + r
Commit c
Stage s
Unstage u
Push p
Pull f
Rebase r
Rebase Interactively r + i, select on a commit, then C-c + C-c
Stash z
Merge m
Fold/Unfold TAB
Show details of the current unit(commit/stage/...) <ENTER>

KeyBinding full list: https://github.com/emacs-evil/evil-collection/tree/master/modes/magit#key-bindings