Questions about using the built-in help system in Emacs or how to find help.
Questions tagged [help]
185 questions
8
votes
2 answers
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:
cmal
- 775
- 3
- 14
4
votes
3 answers
`C-h` without knowing the type of an object
When someone use the Emacs inbuild help via C-h she/he has to know and understand if the object of interest is a function (C-h f), a variable (C-h v), a package (C-h p) or something else.
The differences between these types are unknown for new…
buhtz
- 729
- 5
- 23
3
votes
3 answers
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?
nova
- 31
- 2
3
votes
1 answer
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?
ChaimKut
- 187
- 8
2
votes
1 answer
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 then use link in help buffer.
However, for a…
Realraptor
- 1,283
- 7
- 17
2
votes
1 answer
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-substring (point) (point-at-eol)))
I want when…
Alex
- 801
- 2
- 8
- 18
2
votes
2 answers
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 some, like this about Emacs 25.1, are really good),…
Doug Harris
- 189
- 12
2
votes
1 answer
How to see the code of a built-in function
How can I see the code of a built-in function?
I'd like to look at the code of functions such as upcase-region. I looked at the completion list that I pulled up by "find-library TAB", but the list is huge and couldn't figure out if what I'm looking…
stacko
- 1,597
- 1
- 11
- 19
1
vote
1 answer
Getting `help-xref-button: Wrong type argument: symbolp, (lambda ...)' when using `describe-key' with `describe-function-1' in `help+20'
When using describe-key, the following block from the help+20 package, in the describe-function-1 function:
(help-xref-button 1 #'(lambda (arg)
(let ((location
(find-function-noselect arg)))
…
ShadowRylander
- 123
- 5
1
vote
1 answer
What is the optional `BUFFER` argument to `describe-symbol` for?
I'm trying to add additional contextual help information to describe-function, describe-variable etc, and I notice that describe-symbol has the option to take a buffer as a parameter.
When I try (describe-symbol 'variable (get-buffer-create "buffer…
vfclists
- 1,403
- 1
- 12
- 28
1
vote
1 answer
WHAT is the emacs tutorial command?
It says C-h t in a vague forum manual but I don't have that, how do I access this feature.
eguneys
- 175
- 6
1
vote
1 answer
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 character.
鱼鱼鱼三条鱼
- 53
- 5
1
vote
1 answer
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?
incandescentman
- 4,221
- 20
- 53
1
vote
1 answer
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.
denys
- 315
- 1
- 11
0
votes
0 answers
Why does an unset key binding still show up in the Help menu buffer?
What I've done is that I wanted to slim down on the amount of bindings I had in a major mode (in this case CC-Mode). I had started with CC-Mode's c-set-offset and it did work with the solution I used (below).
(add-hook 'c-mode-hook
…
The Programming M16A4
- 103
- 4