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Questions tagged [hooks]

Hooks are an important mechanism for customizing Emacs. A hook is a Lisp variable which holds a list of functions, to be called on some well-defined occasion.

3
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1answer
62 views

Check if current user undoing/redoing?

Is there a way so that the Emacs are able to tell if the current user is undoing/redoing in the current buffer? Here is the task I want to accomplish, I have add a hook to after-change-function, it ...
0
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1answer
14 views

Function that outputs changes made in buffer

Is there any function that would tell me what changes were made to buffer? I know i can use change hooks to detect changes, but i can't find how to get output of changes. More specifically I would ...
2
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1answer
73 views

Execute function when (after) window scrolls

I need to execute a function every time a window scrolls. I mean the function to be executed at point "after" the window has been scrolled (with C-v, M-v or with the <down> key). I tried: (add-...
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1answer
35 views

Hook when line number changes

Is there a hook which runs when the cursor position changes its current line numbers? For a concrete toy problem, can i highlight the current line as yellow when the line number of the current cursor ...
0
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1answer
15 views

Hooking on to abbreviation expansion

I don't know exactly how abbrev-mode works, but I suppose certain keys --spaces and stops-- cause an examination of the word before point, and a replacement of it in some cases. My question is how ...
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0answers
21 views

Interrupt the exit process?

I have this bound to save-buffer-kill-terminal: (defun magit-projects-areyousure () (interactive) (let ((default-directory org-directory)) (and (get-buffer "projects.org") (magit-anything-...
1
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1answer
34 views

Which hooks guarantee proper (re)displaying of windows after windows configuration is changed?

I'm writing a simple minor mode (for personal use) which dynamically sets fringes according to current window width. I added a dedicated function to those hooks: window-configuration-change-hook ...
0
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1answer
81 views

Adding multiple functions to a hook

I'm looking to add some elisp to my init file that will execute a number of additional functions when I call a particular command. More specifically, when I execute the compile and view command using ...
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0answers
26 views

In org mode, how can I make a post-capture hook run only for certain capture templates?

I have several capture templates. With one of them, I want an Elisp function to transform the contents before saving it. I know of org-capture-prepare-finalize-hook, but this will run for every ...
1
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1answer
51 views

Scrollbar only on selected buffer

I'm using toggle-scroll-bar to show scrollbar on my frame. But is there a way to show scrollbar only on the selected buffer? I think I can use focus-in-hook to detect when a buffer is active, but I ...
1
vote
1answer
84 views

How to set mode hook with lambda using use-package

I'm attempting to set the following hook using use-package, but it's not getting applied. Normal elisp: (add-hook 'org-mode-hook (lambda () (org-bullets-mode 1))) Using use-package: (use-package ...
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2answers
36 views

How to find in which hook(s) a certain function is called?

I'm using the lsp layer on Spacemacs with javascript-backend 'lsp and it activates two modes I don't like: lsp-ui-mode and eldoc. I found lsp-ui-mode inside lsp-mode-hook and added (remove-hook 'lsp-...
4
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1answer
47 views

How to suppress a minor mode's key binding in only certain major modes?

Suppose that I use minor mode MIN with a whole bunch of major modes. In one of those major modes, call it MAJ1, MIN's binding for a specific key K is undesirable; I would therefore like to suppress ...
0
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1answer
35 views

Unable to initialize org agenda with log on Emacs startup

I have been able to initialize org agenda on Emacs startup with: (add-hook 'emacs-startup-hook 'org-agenda-list) However, now I want to initialize org agenda directly with log mode, and I haven't ...
2
votes
1answer
49 views

Running a function every time a character is inserted

I want to check its properties as soon as a Greek word has been inserted into the buffer. As far as I can see, this requires me to check each time the buffer changes, whether, if a Greek word was ...
1
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2answers
73 views

how to add a hook to a custom interactive command

I have a pipeline that opens an emacs client in notmuch-mode when new mail comes in, currently using (notmuch-show "thread:..."). I'd rather use tree view with the most recent message displayed. In ...
2
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1answer
147 views

Different themes in different modes

I would like to do the following: load some theme when working on a particular kind of source file (say, Haskell), but elsewhere use a different "default" theme. I naively imagine that this is ...
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0answers
27 views

Org-mode :results file hook to launch file

My scenario python code creating a wav file last line of code returns the written file name org-mode src block with the option :results file The result block correctly links to the audio file, and I ...
3
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1answer
136 views

Hook with quoted lambda as an argument

I been reading a blog post from Chris Wanstrath from 2010 where he write about coffee-mode. He proposed there this functions hook: (defun coffee-custom () "coffee-mode-hook" ;; Emacs key binding ...
2
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1answer
266 views

automatic latex-preview-pane with auctex and or-mode latex export

To enable automatic latex-preview-pane-mode with AUCTex I bound it to a hook: (add-hook 'LaTeX-mode-hook 'latex-preview-pane-mode) This works. When I open a *.tex file, then latex-preview-pane-mode ...
1
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2answers
49 views

Best hook to keep my regexp highlighted

I need to have non-ASCII chars highlighted in my latex-mode buffers. So I added this lines in my .emacs: (add-hook 'LaTeX-mode-hook '(lambda () (highlight-regexp "[^[:ascii:]]" 'custom-...
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0answers
23 views

Timing interactive command invocation

Is there a clean way to take action after each interactive command with the duration of the command as its argument? My requirements are: defadvising every call-interactive is too much, because I use ...
1
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1answer
193 views

Spacemacs trigger holy mode in major mode

I'm using Spacemacs for clojure development and have gotten used to the vim commands mostly. However, when I start up a Repl I would like to only use holy mode with insert mode. Does anyone know how/...
2
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1answer
81 views

Delete auto-save file when killing Emacs without saving buffer

When I have unsaved buffers and I kill Emacs with save-buffers-kill-terminal (C-x C-c) I'm asked whether to save each buffer. Is it possible to delete a buffer's auto-save data when I answer n? I had ...
0
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1answer
64 views

Load custom highlighting after colorscheme change

I am a Vim user and i recently decided to try Emacs Spacemacs, i have a problem setting up custom highlighting, i set some lines like the following in my .spacemacs (i guess it's the same problem in ...
1
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1answer
31 views

Is it possible to have a global prettify-symbols-alist that other modes add to?

Is it possible to have a global prettify-symbols-alist that other modes add to? A lot of major modes override prettify-symbols-alist instead of pushing into it. One solution I thought of is to push ...
0
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2answers
155 views

Buffer-local after-save-hook?

I'd like to register an after-save-hook that is only active in certain buffers that I specify. For example, assume there are 3 functions currently registered in my after-save-hook: hook-01, hook-02, ...
1
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1answer
93 views

Delete trailing whitespace when saving, except certain modes

How can I delete-trailing-whitespace when saving, except for certain modes? With this attempt, whitespace is deleted for all modes, including fundamental-mode, which I'm trying to avoid. (add-hook '...
3
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1answer
357 views

How to avail of `:hook` using use-package?

I've wrote this, and it works: (use-package web-mode :ensure t :mode (("\\.php$" . web-mode) ("\\.html$" . web-mode)) :preface (defun dg/web-mode-hook()) :config (add-hook 'web-...
0
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1answer
31 views

Weird reformatting, cannot tell what is responsible

In my code I have bindings for two reformatters that are supposed to be applied upon saving relevant code: (add-hook 'tuareg-mode-hook (lambda () (add-hook 'before-save-hook 'ocp-indent-buffer ...
2
votes
1answer
49 views

How to avoid accidentally writing temporary source-block-edit-buffers to file

When doing literate programming in org-mode, I frequently use C-c '[aka M-x org-edit-special] to enter the source-block-edit-buffer, so that I have appropriate yasnippets etc. I then accidentally ...
2
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2answers
135 views

How to run a 'prog-mode-hook' after more specific hooks?

I'm running into an order of initialization issue with hooks. prog-mode-hook enables fci-mode rust-mode-hook sets the fci-rule-column to 99. on initial display the fill column shows at 80 (it's ...
2
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2answers
62 views

Change post-self-insert-hook only in one mode

I have written a functionality that inserts the word end at end of blocks in a lua major mode. How i do it is to check if a space character has been typed, if yes is the word before the space for ...
1
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2answers
131 views

Disable minor mode when in another minor mode

I'm running a distribution of spacemacs and am currently working in clojure's cider debugger, and an issue I've run into is that several of the cider--debug-mode keybindings are shadowed by evil-mode. ...
6
votes
2answers
73 views

Is there a hook that runs for all read only buffers

I want to enable show-trailing-whitespace for editable file and disable show-trailing-whitespace for read only files. I've tried (defun my/read-only-whitespace () (setq-local show-trailing-...
1
vote
1answer
35 views

Run function after changing buffers with helm-list-buffers

helm-list-buffers brings up a list of buffers to select. I'd like to run a function after buffer selection. What's the method to do this?
2
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1answer
58 views

is there a hook that is run before a window is deleted

I want to do some custom stuff before a window is deleted? window-configuration-change-hook seems to be invoked after a window is deleted.
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0answers
87 views

How to get customizations added to `ess-mode-hook` to run in Aquamacs ESS

In Aquamacs 3.3, ESS 16.04, I can't get customizations added to ess-mode-hook to run. Here's a simple example. (defun my-ess-hook () (setq ess-default-style 'DEFAULT) (setq ess-indent-level 2)) (...
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0answers
41 views

Hook variable for horizontal scrolling

There is the hook variable window-scroll-functions for functions to be called before redisplay after vertical scrolling. Is there a similar variable for horizontal scrolling?
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0answers
23 views

Call a function every time a specific piece of text is inserted

I'm wondering whether there is an already existing mechanism of executing a function every time a specific piece of text is inserted. For example, I would like to call company-bibtex whenever I enter ...
0
votes
1answer
97 views

focus-in-hook and buffer-file-name

I have the following in my init file (defun message-buffer-file-name-or-nothing () "Mode line proxy." (if buffer-file-name (message "[%s] %s" (format-time-string "%H:%M:%S") ...
0
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1answer
153 views

add-hook evil-insert-state-entry-hook is not calling the function

Update: It worked properly somehow after disabling and enabling nyan-mode. BUT there is no evidence indicating any relationship between them. Because I can't reproduce this problem after it was ...
0
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1answer
70 views

Is there a Magit hook for post checkout?

Unfortunately, the vc-mode in my mode-line is not being updated when checking out a branch, it still points to the older branch. revert all open buffers fixes than but I can't find a hook to attach ...
1
vote
1answer
76 views

Issue with add-hook for web-mode and js2-mode when using ranger

I wanna add some hooks to web-mode and js2-mode, but it doesn't go well. Here is what I am doing. I wanna to add header line for web-mode and js2-mode cuz they are derived from fundamental-mode. And ...
0
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0answers
45 views

recenter *xref* buffer on next-error

I have a next-error-hook to recenter the next-error-last-buffer, so if the buffer is displayed, it will recenter to the line of the error I just jumped to: (defun jpk/next-error-hook () (let ((win (...
0
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1answer
32 views

How to write a hook to transform each image reference on export?

This question https://emacs.stackexchange.com/a/27065/13217 explains perfectly how to embed base64 image inside of an HTML exported document, and it works great. I wonder now how could I automate ...
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0answers
107 views

How do I attach a custom function to process org-mode babel shell output?

I have a a function (defun display-ansi-colors () (interactive) (let ((inhibit-read-only t)) (ansi-color-apply-on-region (point-min) (point-max)))) that I got from here: http://stackoverflow....
2
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2answers
51 views

How to hook selection changed

I want to create a minor mode that translates selected text. So I want to call a function when selection is changed. How can I detect the change of selection?
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0answers
102 views

Using hooks to organize configuration

Up to this point, I used to have a separate configuration for each major mode, e.g. init.org.el, init.c++.el etc. I would invoke Emacs using an one of the aliases like these: alias emacs-org='emacs -...
0
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1answer
128 views

Adding new syntax highlighting for some major modes does not work

My question is similar to this one and that one: I would like to add highlighting of some characters that are not highlighted in some programming modes, like python-mode and fortran-mode. So, ...