Mandar's Digital Garden 🌱

    emacs

    Posted November 14, 2024  ‐  3 min read

    Generic Emacs

    Following should work for any "configuration" of emacs, although I have only
    tried these with doom.

    Emacs in a terminal

    Lately, I've started using emacs in a terminal using emacs -nw
    But I came across a problem that M-x key won't work. i.e. emacs never receives this keystroke.

    Turns out this has to do with how the terminal handles keystrokes.
    But at least I found a workaround. If I type Esc followed by x then
    Emacs receives M-x.     FWIW, it worked only once. 🤷‍️

    Ref: This SO question and
    last bullet point in this explanation

    Find path to a binary

    In terminal, one uses which <binaryfile> to find the path of the binary (in
    case shell picks wrong path, or if binary is not found)

    The emacs equivalent is M-; (executable-find "binary-file-name")

    I've found this helpful when troubleshooting.

    Thanks to doom-emacs discord channel*

    Apparently, M-! which <binaryfile> also works, it essentially calls which
    command

    Emacs Everywhere

    Do you like emacs so much that you wish you could use it in any edit field on any site on the internet ?
    Now you can.

    Try Emacs everywhere
    I tried it with Doom emacs - works well.

    Push branch using magit

    M-x magit-push-matching seems closest to git push origin HEAD

    There are other magit-push-.. commands that provide better control over where you want to push.

    Read the Magit Manual for details.

    Split hunk using magit

    When using git add -p functionality from the terminal, I use s i.e. split
    hunk functionality a lot. But magit apparently does not have it "out of the
    box"

    One can achieve the same using emacs' "select lines"

    In magit-status buffer, navigate to the line/s you want to commit. Then using
    Ctrl+Shift+2 i.e. C-@, select the line/s. Stage only those lines using s.

    Rename a file

    M-x rename-file (Works in Emacs 26+)

    Doom Emacs

    1. Copy a logo file to some folder like say misc under ~/.doom.d
    2. Add this to your config.el. Save and restart via SPC q r
    (setq fancy-splash-image (concat doom-private-dir "misc/logo.png"))

    (Found this via Doom Emacs Telegram channel)

    Delete branches using magit

    Doom has different keybindings, hence this section is under Doom emacs

    1. M-x magit-show-refs
    2. Go to the Branches section
    3. x (for magit-delete-thing)
    4. RET
    5. y to confirm

    LSP mode for elixir

    Get elixir-ls locally :

    git clone https://github.com/elixir-lsp/elixir-ls.git
cd elixir-ls
mix deps.get
mix elixir_ls.release

    This will create a release/language_server.sh (and .bat for windows) file that
    you will need for the Emacs integration, so note down this path (referred to
    later as path-to-elixir-ls/release).

    (Above instructions from elixir forum)

    In your init.el enable lsp in :tools section.

    Then in your config.el Add the following two lines:

    (add-hook 'elixir-mode-hook #'lsp!)
(add-to-list 'exec-path "path-to-elixir-ls/release")

    (Above instructions from doom discord channel. Now may be outdated. Depending on when you read this)