Questions tagged [help]

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

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3
votes
1answer
53 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 ...
1
vote
1answer
55 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
votes
1answer
17 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
votes
2answers
110 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
16 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 ...
1
vote
1answer
40 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
votes
1answer
82 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
votes
1answer
247 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
121 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
36 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) ?
1
vote
1answer
81 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
votes
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
182 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
108 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
votes
1answer
23 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
65 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
vote
1answer
94 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
vote
1answer
69 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
votes
2answers
58 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
86 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
85 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
votes
1answer
48 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
45 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
387 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
42 views

Open GNU Scientific Library Documentation within emacs?

How do I open documentation of the GNU Scientific Library within emacs?
3
votes
0answers
162 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
153 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
151 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
593 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 ...
2
votes
0answers
181 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 ...
3
votes
2answers
684 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
vote
2answers
62 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
313 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
90 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
125 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
vote
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
79 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?
1
vote
1answer
122 views

How do you navigate documentation in Emacs?

There is some manual I have accessed before on Emacs that described how to navigate the documentation and also how it was constructed. However, I have forgotten how to get there. From memory, the ...
2
votes
1answer
152 views

Documentation for mode-line-emphasis and mode-line-interactive

I'm seeing mode-line-emphasis and mode-line-inactive used in color themes to change the mode-line face value for used and unused buffers. describe-function and describe-variable don't have an entry ...
1
vote
1answer
118 views

Command abbreviation

After running M-x magit-status Emacs provided me this suggestion in the mini-buffer: You can run the command ‘magit-status’ with M-x m-stat RET Is this a built-in feature of emacs? If not, does ...
2
votes
1answer
450 views

How go to Emacs lisp source function from my custom elisp file?

Windows 10, Emacs 25.1. Path to Emacs: d:\Programs\emacs I write on Elisp. And very ofter I want by any key press go to Emacs lisp function. E.g. Here snippet of my elisp file: (setq line (buffer-...
0
votes
1answer
185 views

describe-bindings not working as expected

Spacemacs Help SPC h d b (describe-bindings) is not working as expected. I type SPC h d b, and then enter the bindings: SPC f e d not listed in the minibuffer, but the binding works SPC f e R not ...
0
votes
1answer
52 views

What function are associated with these expression evaluation commands in buffers?

What are the function names for these two bindings? C-o C-x C-e - evaluate expression before cursur and display limited length result in echo area C-u 0 C-x C-e - evaluate expression before cursor ...
0
votes
3answers
216 views

Does emacs have some kind of customized popup creator?

Is there some kind of popup creator package which enables me to create some customized cheat sheets to help me with commands I need or haven't yet memorized? I want to create some simple text files, ...
0
votes
1answer
77 views

Exit from Total Algebraic mode in Spacemacs

I started following Calc-mode tutorial in Spacemacs and I noticed that, once we get in Total Algebraic mode(C-x * c, to start calc-mode, then m t to enable total algebraic mode) the way we should exit ...
2
votes
1answer
179 views

Please explain the behaviour of this emacs feature. (Lisp Interaction mode, truncate long lines)

Sometimes when a function or variable outputs a very long line, it ends with ...). When the cursor is on that line and I press return, the line gets longer (probably expanded). I guess this is some ...
7
votes
3answers
200 views

How can I have multiple *Help* buffers with different content?

Using C-h f and C-h v shows usefull help. Sometimes I want to compare information. So it would be useful to have more than one *Help* buffer, with different content, visible at the same time. But ...
2
votes
1answer
189 views

How best to export functions in dynamic modules

Background I am running Emacs version GNU Emacs 26.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars) of 2017-05-28 I am writing a toy dynamic module to interface with GNU/Linux ...
6
votes
2answers
249 views

How to view package Full Description (commentary section) inside Emacs

I'm looking for a way to visualize inside Emacs the Full Description of a package as shown in Elpa index page. For example the undo-tree package has a nice and comprehensive help page/description ...
1
vote
1answer
185 views

What's the format of a `package-desc` for `package-install`?

The documentation of package-install says: "Install the package PKG. PKG can be a package-desc [...]", but then it doesn't explain what is the format of a package-desc.