Questions tagged [variables]
for variables in Emacs Lisp, which are symbols with values. The symbol’s name is also called the variable name. Most variable names, by convention, consist of lowercase, ordinary words separated by hyphens.
206
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Association list `Symbol's function definition is void` error
I am trying to achieve a slightly smart package management in my init.el file but can't achieve it because of ELisp ignorance. Here is the case.
;; package loader function
(defun load-packages-...
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3
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483
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The global value of a variable I set with setq in my config differs from the local value. How can I get my value to be what I want in every buffer?
I want web-mode-script-padding to be set to 0 at all times.
In my config, I have tried both
(with-eval-after-load 'web-mode
(setq web-mode-script-padding 0)
)
As well as simply,
(setq web-mode-...
CommunityBot
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1
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36
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Is it possible to save register values and restore them in another session?
I use registers (such as C-x r s 0) as a multi-valued clipboard that can save different contents (copy-to-register). Then I can "paste" the value using C-x r i 0. This is really convenient, ...
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49
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Making cleveref insertions globally available
I keep all my commonly used latex packages in one custom package, including the referencing package cleveref. However, reftex is configured to only provide insertion of cleveref referencing commands ...
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2
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186
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Font issues using monokai on emacs 27.2 on WINDOWS 10
Hello guys i am experiencing some font issues using the theme monokai on windows 10 and emacs 27.2. Emacs seems to compile everything quite nice even there are not error and warnings. However, when i ...
CommunityBot
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1
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34
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How to watch variables in gdb?
Is there any buffer in emacs' gdb that can print selected variables (e.g. print *display) on each change (step, next, finish etc.)?
It would be useful as opposed to typing print variable each time.
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Is there a way to check if a symbol is a built-in variable?
This is how you check if an object is a built-in function:
(subrp (symbol-function 'assoc))
=> t
Is there an equivalent way to do this for variables as well?
CommunityBot
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1
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178
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How do I update xref-backend-functions?
I'm not sure what kind of variable xref-backend-functions and how to update it.
After I open a .c file, I do M-: and do
(add-hook 'xref-backend-functions #'gxref-xref-backend)
and it shows me
(gxref-...
CommunityBot
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1
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198
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How to install evil-snipe-enable-alternate-f-and-t-behaviors on Spacemacs?
I am trying to install "evil-snipe" with evil-snipe-enable-alternate-f-and-t-behaviors on Spacemacs.
The instruction on https://github.com/syl20bnr/spacemacs/tree/master/layers/%2Bvim/evil-snipe are ...
CommunityBot
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1
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265
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I'm unsure which option to use for setting a variable: setq, customize-set-variable, or setopt
I'm a bit uncertain about which method to use for setting a variable: setq, customize-set-variable, or setopt. I did some research online, and it seems that opinions on this matter are quite varied. ...
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2
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39
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cannot use buffer-local variables after defining them
I'm trying to define a buffer-local variable inside a function using setq-local in a function
here is the function definition:
(defun set-buffer-local-variable ()
(with-current-buffer (get-buffer-...
- 28.2k
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How do I set package-vc-selected-packages to use a specific commit?
Emacs 29.1 introduced new functions to install packages directly from source.
Configuring it to download from the latest commit works fine, but I can't find how to download from a specific commit ...
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1
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133
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“assignment to free variable” warning after defvar
The compiler will issue a warning message
Warning: assignment to free variable -/var
if you evaluate the following forms:
;;; -*- lexical-binding: t; -*-
(defvar -/var)
(byte-compile (let (_)
...
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3
answers
731
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Set an Elisp var on the command line and read it in the init file
I'm trying to set a variable at load-time:
# emacs --eval '(defvar myvar t)'
Now, in this session, if I C-h v myvar RET I get a nice t. But if I put (message "MYVAR: %s" myvar) in my init file, I ...
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1
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How can I view the history of what variable I've looked up before with describe-variable?
Whenever I call
(describe-variable)
, there is no history of what variables I've recently viewed. Is there a way to enable it to have some kind of history?;)
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1
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Why is 'eval-after-load' required here?
(eval-after-load "dired"
'(progn
(define-key dired-mode-map "c" 'dired-create-empty-file)
(define-key dired-mode-map "r" 'dired-do-compress-to)))
Why is the ...
- 76.4k
0
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0
answers
31
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(wrong-type-argument stringp custom-variable-set) Error when setting variable
I'm having an issue setting custom Emacs variables. When I try to set the variable pressing STATE I run into this error: (wrong-type-argument stringp custom-variable-set)
This is the full debugger ...
- 367
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1
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29
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How can I let-bind a variable to input read with `completing-read`?
How can I store the selected value in a let variable when using completing-read ?
(let ( (selc '("Lower-Skeleton" "Upper-Skeleton")) )
(completing-read "Vista: " selc ...
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0
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37
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Emacs Mode for Reddit, (void-variable hierarchy--make)
Trying to add md4rd, using this:
(use-package md4rd :ensure t
:config
(add-hook 'md4rd-mode-hook 'md4rd-indent-all-the-lines)
(setq md4rd-subs-active '(emacs lisp+Common_Lisp prolog clojure))
...
- 76.4k
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Is there a reason for having beginning-of-defun-function/end-of-defun-function global?
I was working on a mode, setq'ed them with my functions and... emacs broke (really)
For some reason these variable are global. I made them buffer-local, but is there a good reason for having them ...
- 76.4k
1
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1
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Some functions/commands appear to be missing
I cannot call emacs-lisp-docstring-fill-column mentioned here or url-link mentioned here. Neither using M-x nor in code. I use Emacs 28.2. Are these commands provided by a package ? As far as I read, ...
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2
votes
2
answers
164
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Marking as safe all possible lists of strings
Following this answer, I put the following lines in a .dir-locals.el file:
((latex-mode
(TeX-engine . default)
(mode . latex )
(TeX-master . "main")
(ispell-buffer-session-localwords
...
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1
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50
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"Symbol's value as variable is void: file-name" when using let
I want to create an Emacs lisp function which
composes a path of a diary file which has the format <some directory>/t<timestamp>.org and
determines whether or not such file exists.
I ...
- 5,958
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0
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30
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Random warning popping up occasionally when using eshell
I occasionally get this warning while running eshell:
Warning (comp): tramp-loaddefs.el.gz:745:2478: Warning: reference to free variable ‘tramp-remote-path’
and was wondering how to fix it. According ...
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0
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140
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Why does (setopt ...) not give "assignment to free variable" warning, unlike setq and customize-set-variable?
I'm using Emacs 29.0.60
If I open emacs -q, open a Emacs Lisp buffer with FlyMake enabled and type this:
;;; init.el --- summary
;;; Commentary:
;;; Code:
(setq var1 2)
(customize-set-variable var2 ...
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2
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84
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Any way to access a lexical let variable outside of the let?
I need to retrieve a local, lexical, runtime variable from a function, but I'm unable to modify the function to return it because it is from an external library. The variable I'm unable to reach is ...
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2
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73
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How to set a local variable when a certain file is visited
EDIT: Changed "load" to "visit"
I want to set a variable when a specific file is visited, for example "package.json". Note I don't want to set a variable when any json ...
- 159
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1
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41
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expand org variable value in situ
Is there a way to link to an orgmode variable's value?
Or at least export it?
I can get a link to jump to the variable definition,
but not display its value or export.
for example the text in ...
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1
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1
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30
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gnu-calc: How to declare variables in R (Real)?
I'm figuring out complex algebraic calculation in gnu-calc.
Suppose:
after many long calculation I got following algebraic expression:
-8 * a - 2 * b + 2 * b * i - 40 * i - 8
and I want the imaginary ...
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4
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200
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How to make changes on variables' values be persistent over sessions?
The current question is related to a previous question which is still not fully solved.
I have been doing the following:
1 - After executing describe-variable over exec-path, I get:
("/opt/...
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0
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Using a `defconst' or `defvar' While the Variable Has a Local Binding Sets the Global Binding?
The GNU Emacs Lisp Reference Manual, 12.5 Defining Global Variables:
If you use a defconst or defvar special form while the variable has a local binding (made with let, or a function argument), it ...
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113
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How to set a variable name with a variable?
I want to do this.
(let ((myvar "my/variable")
(myval "Some Value"))
(setq myvar myval))
The manual method is:
(setq "my/variable" "Some Value")
Here ...
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votes
3
answers
47
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Is the capture template bound to a variable?
I have the following defvar that declares a variable and gives it a string value. Notice, I used the word "gives" but I was wondering if "bind" would be the proper one to use.
(...
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1
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What does defvar do in this code?
I know this may sound silly but what does defvar do in the code below? Does it define a variable that hold a capture template? or we say that the template is bound to the variable capture-template-...
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org-agenda files variable: I'm not sure that the value is set just on init.el
Pressing C-h v I can see the value of this variable.
In my init.el I've commented out this variable assignment: ;;(setq org-agenda-files '( "~/org/*.org")), and restarted Emacs.
But if I ...
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1
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How to stop set-auto-mode from removing local variable binding? [duplicate]
Why does (set-auto-mode) remove the local variable binding and how I can keep the local binding around?
(defvar-local test-var nil)
(setq test-var t)
(message "%s" test-var) ;; t
(set-auto-...
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2
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How do you use a variable in the "replacement" part of query-replace-regexp?
I want to do simple replacements in a LaTeX source using something like that:
;; test-1
(query-replace-regexp (regexp-quote FOO)
(concat "Foo "
...
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1
answer
30
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Why doesn't stringp evaluate the expression in this case?
I'm relatively new to Elisp and I'm trying to figure out a bug in my code, but I have no idea what to search or read in order to get an idea about it.
The bug is in this code:
(defvar some-variable &...
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1
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128
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Can't access a global variable inside a function in elisp?
I am trying to make a simple function that toggles "lsp-ui-doc-show" and "lsp-ui-doc-hide", by calling the same function every time.
Thought it was simple enough to use a global ...
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1
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GNU emacs lisp: string match (how to pass emacs-version correctly)
I'm newbie with Emacs and I'm experimenting with Lisp on GNU Emacs-26.1. Can't understand why the following simple piece of Elisp code does not work:
(string-match "^GNU Emacs" emacs-...
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1
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How to use header-args variables to fill cell values of a table
I have an org-mode file as such:
* Header level 1
:header-args: :var filename="somefile.csv"
** Header level 2
:header-args: :var foo="bar"
#+begin_src emacs-lisp
foo
#+end_src
#+...
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2
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177
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Warning assigning variables
I'm rebuilding my emacs configuration, and trying to compile without warnings. I'm using also cask. I have this case:
(require 'magit)
;; Enable a right limit of 70 chars for git logs
(add-hook '...
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1
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1
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Passing a symbol as an argument to a function
I'm trying to understand why this doesn't work, and how to make it work:
(defvar test/var-1 nil)
(defvar test/var-2 nil)
(defun make-setter (var-to-set)
(lambda (val-to-set)
(setq var-to-set ...
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46
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Redirect change made to a variable to another variable
I have variables foo and bar. I have a function that modifies foo and I can't change that function.
How can I redirect the change made to foo so it applies to bar instead?
EDIT :
I want this ...
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7
votes
4
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354
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Tracking when variables get updated
I have a problem with org-mode's agenda view. While I've set org-agenda-files to '("~/org/") invariably when I finally spin up M-x org-agenda I find that org-agenda-files just points to one org-file. ...
- 76.4k
5
votes
1
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205
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Function add-variable-watcher does not watch "last-command" variable
I have added a watcher function to watch the last-command variable.
(defun my-watch (symbol newval op where)
(message "Hello"))
(add-variable-watcher 'last-command #'my-watch)
The ...
- 76.4k
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0
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52
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Can I somehow hook a variable? [duplicate]
So a function is called when the variable value is changed?
add-hook seems to only accept functions.
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0
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96
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.bashrc environment variables not picked up by Spacemacs?
I've added a few environment variables to my .bashrc file, some of these are paths to customized bin/programs, such as:
export MY_ENV_PATH_VAR=/home/user/path/to/bin
I've refreshed spacemacs' ....
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0
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2
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166
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Determining whether a mode was enabled
Is it possible to determine whether global-display-fill-column-indicator-mode or display-fill-column-indicator-mode was enabled?
I am running Emacs 27.2.
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2
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Why changing the value of this variable via add-to-list is not working?
Usually, I do the following to change a variable's value:
1 - I execute the command set-variable
2 - I pick cider-shadow-cljs-command
3 - I tweak the value changing it to be "shadow-cljs"
It ...
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