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
questions
0
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1
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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, ...
- 1,314
1
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1
answer
49
views
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 ...
0
votes
1
answer
30
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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.
- 218
6
votes
1
answer
240
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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. ...
- 421
0
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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-...
- 1
0
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0
answers
75
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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 ...
- 1
1
vote
1
answer
133
views
“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 (_)
...
- 4,563
1
vote
1
answer
30
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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?;)
- 591
0
votes
1
answer
61
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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 ...
- 135
0
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0
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30
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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
0
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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 ...
- 1
0
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0
answers
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))
...
- 591
1
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1
answer
55
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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 ...
1
vote
1
answer
43
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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, ...
- 337
2
votes
2
answers
163
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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
...
- 163
0
votes
1
answer
49
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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 ...
- 103
0
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0
answers
30
views
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 ...
- 135
2
votes
0
answers
133
views
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 ...
- 135
0
votes
2
answers
84
views
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 ...
- 1
0
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2
answers
72
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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
0
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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 ...
1
vote
1
answer
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 ...
- 589
3
votes
0
answers
114
views
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 ...
- 4,563
0
votes
3
answers
47
views
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.
(...
- 421
0
votes
2
answers
113
views
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 ...
- 151
1
vote
1
answer
89
views
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-...
- 421
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0
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38
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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 ...
- 121
1
vote
1
answer
38
views
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-...
2
votes
2
answers
59
views
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 "
...
- 431
0
votes
1
answer
30
views
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 &...
- 103
1
vote
1
answer
125
views
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 ...
- 187
1
vote
1
answer
73
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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-...
- 165
0
votes
1
answer
174
views
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-...
- 131
1
vote
0
answers
52
views
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.
- 334
1
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0
answers
92
views
.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' ....
- 113
0
votes
2
answers
165
views
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.
- 1
1
vote
2
answers
89
views
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 ...
- 1,409
0
votes
4
answers
197
views
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/...
- 1,409
-2
votes
2
answers
51
views
Passing variable to function and changing its value
The following function is intended to ensure that a variable defined in a defvar is constrained within a numeric range.
I do not want to hardwire the modification of conshine-verbiage, so one can pass ...
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1
answer
44
views
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 ...
- 3
1
vote
1
answer
229
views
How can I use `add-to-list` to add multiple elements to a list value of a variable?
Is this the way to use add-to-list with multiple entries?
(add-to-list 'auto-mode-alist
'(("\\.f\\'" . fortran-mode)
("\\.F\\'" . fortran-mode)
...
- 1
0
votes
1
answer
40
views
Passing var or const to a function
I have a function called put-docstr that takes a string. I can set the string using
defvar or defconst. Not sure if I should quote the symbol when using it.
Thus like this
(put-docstr #'typex-...
- 1
0
votes
1
answer
44
views
How to include variables within #+INCLUDE:?
In my init file, all the paths that I use are stored at the beginning of the file with a series of lines like this:
(setq personal-path "PATH")
Then I can use them like this:
(set-register ?...
- 1,220
0
votes
1
answer
19
views
Setting of face using funcall
I am using funcall to set a typeface by calling a function select-typeface. I would like to remove select-typeface, calling (face (funcall level-typeface depth match).
Cannot simply do
(let ( (face (...
- 1
1
vote
1
answer
91
views
Warning: assignment to free variable ‘skeleton-pair’
Am using the following function, but getting the error
In bracemk-balance:
fencones.el:109:9:Warning: assignment to free variable
‘skeleton-pair’
What is wrong with this?
(defun bracemk-balance ()...
- 1
1
vote
1
answer
36
views
how to re-enable a variable after a package overwrites it? (in particular, mark-even-if-inactive and Hyperbole)
I have mark-even-if-inactive set to t in my init.el; I've found that I that so (interative "r") works as expected; if that variable is nil, I get "The mark is not active now" when ...
- 573
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votes
1
answer
214
views
How to enable a minor mode immediately after a buffer is open?
I have been using a pdf-tools fork with a image-roll.el support, this fork and file make it possible to scroll continuously from the end of a page to the beginning of the other without jumping from ...
0
votes
2
answers
208
views
Output the VAR name and its VALUE
I defined these variables/functions:
(defvar FirstVar-p nil
"DOCSTRING")
(defun toggle-first-var ()
"DOCSTRING"
(interactive)
(setq FirstVar-p (not FirstVar-p)))
(defvar ...
- 1,201
0
votes
1
answer
121
views
Why is it that during debugging EDebug says local variable is not bound?
For example, I debug a function, I'm stepping in it, I want to check a local variable's value and C-h v says: variable is not bound
I can eval the variable, by pressing e and tpying its name, only ...
- 1,190
1
vote
1
answer
187
views
How do I call a function within a lambda?
I would like to define a function that generates lambdas, as such:
(defun my-func (FUNCTION)
(lambda ()
(FUNCTION)))
But when I evaluate the following
(defun my-func1 ()
(message &...
- 288