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Questions tagged [help]

Questions about using the built-in help system in Emacs or how to find help.

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2answers
33 views

What does it mean to type the “at” symbol in `C-c @ C-h`?

I'm using hideshow and I like it. The package is recommending me that I use the keys C-c @ C-h to hide a block instead of typing some really long command. I'm familiar with C-c and with C-h, but I can'...
0
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1answer
18 views

How to run a mini-buffer command from interpreter

I think this might be a duplicate but I can't figure out how to run this: (man emacs)[cursor] [C-x][C-e] Error I get back: Debugger entered--Lisp error: (void-variable gpg) (man gpg) eval((man ...
1
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1answer
19 views

Number value echoed from evaluation

What does the (#o3, #x3, ?\C-c) output in the echo area (next to the 3) represent? Here I've simply evaluated (+ 1 2)
5
votes
1answer
702 views

Are the graphical depictions in docs drawed in manual labour?

There are tons of pretty graphical depictions in the emacs(or elisp) docs such as x1: -------------- -------------- -------------- | car | cdr | | car | cdr | | car | ...
0
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1answer
14 views

eval-expression on (setq helm-debug t) does not change describe-variable output

I'm running this version of Emacs: GNU Emacs 26.3 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.11) of 2019-09-23, modified by Debian Installed on Ubuntu 19.10 via apt, and not built from source. ...
1
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1answer
26 views

Can which-key help with extended keyboard shortcuts?

I have two shortcuts defined like this ;; eval in shell (global-set-key (kbd "C-c x s") 'eir-eval-in-shell) ;; eval in ruby (global-set-key (kbd "C-c x r") 'eir-eval-in-ruby) which-key helps me ...
1
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3answers
87 views

How can I check the implementation of a builtin function?

Is there a way to check the implementation of a builtin function (e.g. load-file) without cloning the Emacs repository?
2
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1answer
33 views

describe key for menu-bar items from `menu-bar-open` calls

Preface: I disabled menu-bar-mode and bound <mouse-3> to menu-bar-open, via (global-set-key [mouse-3] #'menu-bar-open) With this configuration, how can I get help for menu-bar items? (My ugly ...
0
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1answer
21 views

how to generate tags and find mark-whole-buffer definition

I am following the Introduction to Programming in Emacs Lisp tutorial built in in Emacs and have arrived at the Buffer Walk-through section. In the 4.1 Finding more information the function xref-find-...
1
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1answer
23 views

Next buffer command change when in the terminal window

I am totally new to Emacs and on this first day I am trying to do very basic stuff in emacs. I am stuck at switching buffers when there is a terminal window open (by using M-x term). The next buffer ...
7
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1answer
94 views

How to discover (standard) function names?

When programing emacs (or common) lisp, how to discover (standard) function names (using emacs and working offline)? Example: Let's say you want to shift bits of an integer, but you don't now ...
2
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0answers
49 views

Follow mode for describe-function/describe-variable

When learning elisp by reading source code (on a large screen) it would be nice to have something like a "follow mode", which automaticaly displays the output of describe-variable or describe-function ...
1
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1answer
57 views

Retrieve all the major modes equipped with emacs

I learned that GNU Emacs Manual Most major modes fall into three major groups. The first group contains modes for normal text, either plain or with mark-up. It includes Text mode, HTML mode, ...
0
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1answer
25 views

How to modify the jump character color displayed by evil-avy-goto-line?

The color of the jump character displayed by evil-avy-goto-line is somewhat blurred, which causes me to change the color of the displayed character or modify the color of the background strip of the ...
2
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2answers
113 views

Disabling quote conversion in docstrings

(defun foo () "`bar'") The ASCII quotes in this docstring are displayed as typographical quotes by describe-function. Is it possible to have them displayed in their original form?
0
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0answers
17 views

How to configure Spacemacs on Win10 to use’ispell

I just installed spell checking on spacemacs and received an error message that I didn't find the Ispell directory. I installed ispell, but I don't know how to tell spacemaacs ispll where and add the ...
0
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1answer
133 views

How to invoke Elisp code interactively

Related Question I want to interactively invoke Elisp code which extracts the words between two arbitrary symbols. So could someone kindly guide me to a modest document which explains how to invoke ...
1
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1answer
43 views

Configure echo time for input of key-sequence prefix keys

I am writing latex code with AUCTEX. I very often highlight text in bold or italics. For instance, AUCTEX comes with the command C-c C-f C-e, wich can be used to emphasize text in an active marked ...
5
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1answer
85 views

Not found lisp reference manual within emacs

I was expecting the Emacs Lisp Reference Manual at (C-h i m elisp). But there was no menu elisp or lisp there. C-h v and C-h f work fine for variables or functions though. C-h i 5 takes me to file ...
2
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1answer
250 views

Meaning of “value is t”

When using describe-variable, often the value for a variable is listed as: Its value is t What does that mean and why specifically t?
0
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2answers
139 views

What does the prompt mean for `has changed since visited or saved. Save anyway?`

When I try to save a buffer back to a file: install-packages.sh has changed since visited or saved. Save anyway? (yes or no) I don't know why it happens, but I also see #install-packages.sh# ...
0
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0answers
39 views

Why IDO not show keybindings?

To kill line I use command kill-line (C-k) Nice. But why IDO not show keybinding for this command (C-k) ?
39
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9answers
5k views

How can I start learning Emacs Lisp?

Background: I'm mostly a vi user and am converting to Emacs. Past the basics and now use it for writing code in C and some Python with plans to do an R conversion too. I wrote (Common) LISP for ...
1
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1answer
102 views

Find variable definition and uses in emacs-lisp files?

Is it possible to find/jump/point to where an Emacs LISP variable is used/defined within the current file? I know about find-variable, describe-variable and find-symbol, but those all seem to work ...
0
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1answer
31 views

How get decimal values?

windows 10, emacs 26.1 Open *scratch* buffer and do next: (/ 15 6) press C-x C-e Result is in minibuffer: 2 (#o2, #x2, ?\C-b) As you can see the result is INTEGER value. But I need correct value ...
4
votes
1answer
209 views

What is the correct way to pop up a window with a message, and locally bind a key in that buffer?

What would be the proper way to pop up a window (preferably in the current frame),with a message? I also want to locally (in that buffer only) the q key to a function that will kill the buffer and the ...
3
votes
1answer
118 views

Help needed to debug (very) slow markdown-mode

I come back to emacs after an eternity without using it. I used it before but now that I'm a grown up I'd like to understand what I do and how to do stuff. I use emacs mainly for markdown edit at the ...
0
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1answer
26 views

Unable to mark files in directory listing from `C-x C-d`

I was just wondering if anyone has noticed the following behaviour after doing C-x C-d. I use C-x C-d to navigate to a directories and subdirectories with pdfs. Then I try to mark a pdf file with M-x ...
4
votes
1answer
68 views

Smarter behaviour for “rename-uniquely”?

I am starting to use "rename-uniquely" for help buffers so I can see multiple function helps at the same time. However, what I get is: *Help* *Help*<2> *Help*<3> etc What I would ...
1
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1answer
102 views

Navigation to source of compiled lisp function?

https://stackoverflow.com/questions/4222183/emacs-how-to-jump-to-function-definition-in-el-file and talk about navigation to source of functions. They offer two options: M-x find-function C-h f ...
1
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1answer
74 views

\\{ in a doc string: what does it mean/do?

What does this backslash syntax mean? (defun elfeed-search-mode () "Major mode for listing elfeed feed entries. \\{elfeed-search-mode-map}" (interactive)
3
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2answers
61 views

Confused by the Emacs Lisp doc : Adjusting Point After Commands

I am on the trip of reading GNU Emacs Lisp Manual, and section 20.6 has the following text: It is not easy to display a value of point in the middle of a sequence of text that has the ‘display’, ‘...
2
votes
1answer
98 views

What keys can I use to create/delete and select side windows?

I have a shell buffer that's a good candidate for a side window: I also regularly use an org buffer, that's always good to have around. https://www.gnu.org/software/emacs/draft/manual/html_node/elisp/...
1
vote
1answer
90 views

Keyboard layout changed but I don't know why

Sometimes, when I type quickly I do something that change the keyboard layout: the key that would produce < now produces |. Problem is that I don't know how I cause that and how to undo that! If I ...
0
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1answer
51 views

Profile performance for a given command

Say I create a quick keyboard macro, but find that executing it in quick succession is extremely slow. How can I determine in what functions or packages this command is spending most of its time? ...
2
votes
2answers
48 views

Format help buffers to specific width

I'm helping a visually impaired user make viewing documentation in Emacs easier. He sets his font size such that he has about 40 columns of text in a full-screen frame with no splits (and he has ...
2
votes
1answer
416 views

Where is the file for the Fancy Startup Screen

I'm trying to find where the contents of the *GNU Emacs* buffer, aka fancy startup screen, are located on my hard drive. When I M-x eval-expression buffer-file-name to find the file of the current ...
1
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0answers
43 views

Open GNU Scientific Library Documentation within emacs?

How do I open documentation of the GNU Scientific Library within emacs?
3
votes
0answers
172 views

Info basics: where is package Info?

I just grabbed csv from elpa (melpa) and, of course, the install buffer had the blurb about csv. I take it that blurb is an Info file somewhere? Or is it just a section of the csv.el comments? In ...
2
votes
1answer
174 views

Jump to where a keybinding is defined?

It is possible to jump to the function that a keybinding is mapped to (via describe-key). Is it possible to jump to where the keybinding itself is defined? Example (define-key my-mode-map "a" 'my-...
1
vote
2answers
159 views

Automatically switch to new help frame

Now that emacs supports frames in terminal mode, I'm finding that the help commands open in a new frame. Is there a way to automatically switch to the new frame after it is created? I have seen the ...
6
votes
3answers
754 views

lazy find/search for commands within emacs

Is there a way to do a lazy find/search within EMACS, for commands using their description? Something in the lines of: Say I am looking for how to add indent to org mode I suspect there is a ...
3
votes
0answers
187 views

Emacs can not access its own manual

I just installed Emacs 25.2 on my computer, but I can not access its manual. when I press C-h r this screen opens which lacks any links related to the Emacs manual. Futhermore, the echo area displays ...
5
votes
2answers
761 views

What does dependency mean in the Status field of a package shown in list-packages

The command list-packages shows the list of available packages. A Status column appears with several possible values: available installed dependency built-in incompat And the packages seem to be ...
1
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2answers
65 views

Always use default as input to describe-symbol function

I want to map describe-symbol to shortcut, but I constantly have to press additional enter for show describe on found default suggestion. Is there a way to force emacs to newer ask for confirmation ...
4
votes
1answer
331 views

Org mode: How can I add a section-name only frame to beamer slides?

I currently have: #+options: H:2 and... * Introduction ** Some definition + list item1 + list item2 So I get Introduction section in the Outline, and a frame for Some definitionand those ...
3
votes
1answer
95 views

(delete-backward-char) needs an argument?

I have written a function to yank a selected region n times. I get a warning however because of the (delete-backward-char) although it seems to work. Does the (delete-backward-char) need an argument? ...
1
vote
1answer
134 views

How to group key bindings in which-key?

I have binded Winum functions to SPC 0 - SPC 9. In which-key minibuffer I see each key by its own (10 labels), which occupies a lot of space. It would be great if I could group all winum keys labels ...
1
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0answers
36 views

How to graphically represent Meta characters

Given that the variable x contains the numeric representation of the key "Control-Z", say (setq x ?\C-z), one may graphically represent its contents by issuing the command (char-to-string x), ...
1
vote
1answer
85 views

How do you view history of nodes visited when reading through documentation?

Also, can you view any metadata stored which describes the manuals/top level nodes you have previously visited?