Linked Questions

1 vote
1 answer

What makes an elisp function available with M-x [duplicate]

Why some functions in simple.el are invokable with M-x and some others aren't? For example I can do M-x what-line but I can't do M-x line-number-at-pos.
6 votes
2 answers

Searching all installed mode maps for a specific key binding

When deciding on which key binding I want for a specific command, it would be very nice to know if any of my installed mode maps (global, major and minor) have already used this key binding for some ...
0 votes
1 answer

How to modify interactive function `occur` to a non-interactive function

occur is an interactive compiled Lisp function in ‘replace.el’. The definition is as follows: (defun occur (regexp &optional nlines region) (interactive (nconc (occur-read-primary-args) ...
1 vote
2 answers

Are commands not equivalent to functions in Emacs? [duplicate]

The documentation for M-x says: M-x runs the command execute-extended-command (found in global-map), which is an interactive compiled Lisp function in ‘simple.el’. It is bound to <execute>, <...
0 votes
1 answer

Switch to *scratch* buffer (global-set-key)

I am reading the Intro to Lisp Programing and got to the chapter where switch-to-buffer is introduced. I tried to bind (switch-to-buffer "*scratch*") via global-set-key But this does not ...
0 votes
2 answers

How do I define a function to execute as a command with M-x? [duplicate]

I wish to M-x my-func and let my code run. This seems basic but where can I get more documentation about this, if possible inside emacs itself?
1 vote
2 answers

What does the (interactive ...) form mean?

I want to write a function that will write the output of wc -l <file-name> next to each file in dired mode. I got to this point: (defun my-dired-insert-add-wc (beg end) (save-excursion (...
16 votes
1 answer

Why can't I bind my function to a key or call it with M-x?

I wrote a function, and I want to call it via M-x, and bind it to a key. This is my function: (defun my-function () (message "This is a great function")) If I try to call it with M-x my-function,...
2 votes
1 answer

Moving CLOCK entries from one header to another?

Suppose we have two entries: Header One and Header Two: * Header One :PROPERTIES: :ID_LOG: TARGET :END: :LOGBOOK: CLOCK: [2018-07-04 Wed 00:00]--[2018-07-04 Wed 0:30] => 0:30 :END: * Header Two :...
0 votes
1 answer

Why can't I bind tab to multiple spaces? [duplicate]

I'm trying to bind tab to either a tab or multiple spaces in Latex/ESS-noweb mode but I can't get it to work. I tried (local-set-key (kbd "<tab>") 'self-insert-command) which didn't work, and ...
8 votes
1 answer

Wrong number of arguments on lambda key binding

I am not able to figure out what is wrong in this elisp form: (define-key ggtags-mode-map (kbd "M-.") (lambda () (interactive) (ggtags-find-tag-dwim) (recenter))) I keep getting this ...
3 votes
0 answers

Bind a key to a lambda: what am I doing wrong? [duplicate]

I'm reading about some concepts of Emacs Lisp. The lambda's seems interesting to me. After reading the manuals about lambda's in Emacs Lisp, I decided to play with it. For example, I have this ...
10 votes
1 answer

How to right align region and/or line?

We can center text with M-x center-region and M-o M-s. Is there something similar for right-alignment? Example before: Item 0: value | Item 100:...
4 votes
2 answers

Bind `C-x 8 l` to typing lambda (λ)

When I try to do this: (global-set-key (kbd "C-x 8 l") (lambda () (insert "λ"))) It just doesn't work: Wrong type argument: commandp (lambda nil (insert "λ")) Does anyone know a decent way to do ...
38 votes
2 answers

What's the difference between a buffer, a file, a window, and a frame?

When posing questions on this site, people sometimes talk about "windows" when they mean "frames," and "buffers" or "files" when they mean "windows." So: Q: What is the difference between a buffer, ...

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