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Questions tagged [help]

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

0
votes
1answer
23 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
42 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 ...
2
votes
1answer
50 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
20 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
48 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
52 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
46 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
48 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’, ‘...
0
votes
1answer
64 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
46 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
35 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
30 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
209 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
vote
0answers
36 views

Open GNU Scientific Library Documentation within emacs?

How do I open documentation of the GNU Scientific Library within emacs?
4
votes
0answers
83 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 ...
1
vote
1answer
95 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
93 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 ...
5
votes
3answers
194 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
131 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 ...
1
vote
2answers
361 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
36 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 ...
3
votes
1answer
156 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
66 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
84 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
29 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), ...
0
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0answers
27 views

instant sourcecode hints

I found this awesome Js code that shows code hints\comments. I hope to find a similar experience in Emacs where say for example I have the cursor over a piece of C code and it would show hints on the ...
1
vote
1answer
55 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
97 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
90 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
73 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
262 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
119 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
47 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
2answers
151 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
68 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
117 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
161 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 ...
3
votes
1answer
136 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
237 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
138 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.
1
vote
1answer
91 views

how to copy emacs version info and org-mode version info?

Is there a command to display and automatically copy to clipboard both the current version of Emacs and the current version of org-mode?
7
votes
1answer
1k views

Why does GNU Emacs use ksi(ξ) as its logo?

Why does GNU Emacs use ksi(ξ) as its logo, while most Lisp dialects use lambda(λ) as their logos? not mean this one:
0
votes
1answer
42 views

Unclear expectation of behavior from `scan-sexps`

The docstring of scan-sexps says: If the beginning or end is reached between groupings but before count is used up, nil is returned. Putting point (|) before the first element of a list: (|a b c) ...
6
votes
1answer
43 views

How do I customize the way Emacs prints out certain keys and key sequences?

For example, I want Control key to be displayed not as C but as ⎈ (U+2388 HELM SYMBOL) in the minibuffer. Trying to personalize my Emacs and display all function keys as ISO symbols. And sequences to ...
5
votes
2answers
421 views

What bindings start with H-z?

When I type H-z, emacs waits for more input, so I assume something is bound to H-z plus something else, only in this case C-h k H-z also just waits for more input. How can I find out what is bound to ...
2
votes
1answer
193 views

Finding emacs release notes

What's the best source of emacs release notes - especially for reading prior to installing an update? I searched Google for "emacs release notes". There are some posts about specific releases (and ...
5
votes
3answers
177 views

If I know a keybinding/shortcut, how to get the corresponding function?

I want to use the function to switch to other window when there are only 2 windows in emacs. I know that the shortcut is C-x o, but I don't know which function that shortcut calls. How do I ...
1
vote
1answer
186 views

echo-area: disable help messages

I get the following in my minibuffer and I want to disable these basic help messages. Anyone know how? Type C-x 1 to delete the help window Type "q" in help window to restore it's previous buffer ...
1
vote
1answer
69 views

Bindings in helm-help?

when helm is active, I can press C-c ? to open a buffer containing helpful information for the current helm session. Now, coming from vim, I'd like to have some evil-bindings in that window, but I'm ...
1
vote
1answer
193 views

Where to explore Emacs-Lisp APIs?

Is there a web app for Emacs-Lisp API searching with nice description, links, examples, etc? Something like http://apidock.com/ for Ruby, or http://en.cppreference.com/w/ for C++, etc.