Weekly Tips, Tricks, &c. Thread

This is a thread for smaller, miscellaneous items that might not warrant a full post on their own. [See this search for previous "Weekly Tips, Tricks, &c." Threads.](https://www.reddit.com/r/emacs/search?q=Weekly+tips&restrict_sr=on&sort=new&t=all) Don't feel constrained in regards to what you post, just keep your post vaguely, generally on the topic of emacs.

Ok! Let's try... I'm starting emacs daemon using systemd, and it gives some "authentication message not specified" (or similar) message, (sorry I can't check now)... the systemd job seems to be alive and well... but I can't connect to it with `emacsclient`... I do a `systemctl restart --user emacs.service` and it all works just fine. It's a bit annoying...

Me too. The log has something like: Invalid MIT-MAGIC-COOKIE-1 key

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This magic cookie is X11 related. Something in your Emacs config triggers loading / accessing X11, but Emacs can't, because he hasn't the "magic cookie", the key to open X11's access control.

To play back a macro, you press C-x e. To play the same macro back, you just press e. How does that work? I want to do something similar for a custom command I made. I wrote a function that duplicates a line, and set it to fire on C-c d. I want to be able to press just d to duplicate the line after an initial C-c d.

Emacs support for conversion to different calendars (e.g. Lunar (Chinese), Hebrew, Islamic, Astronomical) is undefeated. For example, figuring out when the Lunar New Year in 2023 is `calendar-chinese-goto-date`, keybinding: `g C <ret> 40 1 1`. <https://www.gnu.org/software/emacs/manual/html_node/emacs/Other-Calendars.html>

You're looking for `repeat-mode`: [https://www.masteringemacs.org/article/mastering-key-bindings-emacs](https://www.masteringemacs.org/article/mastering-key-bindings-emacs) There's a few packages around that make it simpler to define bindings, etc (and use-package supports it now too)

In general, by temporarily activating a keymap. As of Emacs 28 the easiest way to do this is to use `repeat-mode` and its `repeat-map` property, which goes basically like this: ;; Define the command (defun my/duplicate-line (...) (interactive) ...) ;; Create a keymap and bind any commands you want to be repeatable within it (defvar my/line-command-repeat-map (let ((map (make-sparse-keymap))) (define-key map (kbd "d") #'my/duplicate-line) ;; Other bindings... map)) ;; For each command that you want to trigger that map, set its `repeat-map' ;; property (put 'my/duplicate-line 'repeat-map my/line-command-repeat-map) ;; Etc... There are a few packages floating around to simplify this; it's a pretty straightforward macro to write. And `use-package` also supports it in its `:bind` handler.

Exactly. It appears that some part of the login session startup, including the emacs daemon startup, happens before the $XAUTHORITY environment variable (and possibly $PATH) is set. On restarting the daemon, it picks up the correct environment, and is able to work just fine. Since the workaround is simple, I haven't bothered fixing this. Probably requires a dependency on X11 startup in the emacs.service file.

IMO it is not worth your time to fight systemd in this case. Starting the daemon in your xinitrc file is much more easier and headache-free.

How do you guys start a new project with emacs? Is there something like snippets for filestructure/dependecies? I really like hos simple it is to setup something with intellij/pycharm.

If you want to do it from emacs you can try https://melpa.org/#/prefab for example.

A more general way is to use the `repeat` function. The default binding is `C-x z`, but I bind to `M-o`. So for u/The_Great_Danish, what you would do is type `C-c d` then type `M-o` as many times as you need.

When I implement `(global-hl-line-mode 1)` in my init.el file I notice that there is this very thick distracting line that forms on the border of the highlighted line that I would like to get rid of. Is there some command that will help me do that? Also, is there a way I can change a color scheme so that it would make the top of Emacs, above the menu bar, dark themed as well?

`hl-line-mode` uses the `hl-line-face` to draw the highlight, so take a look at the spec for that face.

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Im using the new tsx-ts-mode, is there a way to make emacs insert closing html tags automatically?

Thank you!