Questions tagged [read]
The read tag has no usage guidance.
30
questions
2
votes
1
answer
59
views
When does Emacs enter command loop?
I'm reading (info "(elisp) Command Overview"):
Variable: post-command-hook
: ... ...
: This hook is also run when Emacs first enters the command loop (at which point this-command and last-...
- 4,272
0
votes
1
answer
28
views
How can I read a number as user input?
I would like a user to input a number using the minibuffer. What function should I call and how should it be used?
- 1,183
2
votes
0
answers
37
views
Inconsistency between read-key and read-key-sequence-vector w.r.t. conditional application of local-function-key-map translations
While working with read-key-sequence-vector and read-key, I found that the former applies the local-function-key-map translations in a conditional manner but the latter does not. I am using Emacs 28.1 ...
- 186
0
votes
1
answer
25
views
How to read-from-string, but keep strings inside as it is?
With a elisp piece of code:
(message "%s" (read-from-string "(setq a \"a string here\" )"))
I got result:
((setq a a string here) . 25)
But I want result is:
((setq a &...
- 3
4
votes
3
answers
173
views
the Term “Hash Notation“ in the Elisp Manual
I'm reading GNU Emacs Lisp Reference Manual, and I see the phrase "hash notation".
Two places in the document seem to have different interpretations, so I have 2 questions.
2.1 Printed ...
- 4,272
1
vote
2
answers
128
views
Make the minibuffer prompt always have a default argument
Is it possible to make the first history item available as the default argument when running commands like eval-expression and goto-line?
I'd like to be able to just press enter to use the previous ...
- 15
0
votes
1
answer
74
views
Setting completion-styles with read-multiple-choice
Am playing with read-multiple-choice to set completion-styles. Originally had (nth 1 sentry) but with '(basic substring), it will only pick up substring. Thus I can instead call (setq completion-...
- 1,183
1
vote
1
answer
48
views
How to preselect initial text in the minibuffer with Elisp?
I'm using read-string to read a string from the minibuffer, with an initial input. How can I highlight the initial input, so that I can start replacing it with one key stroke? IOW, given (read-string &...
- 1,555
1
vote
3
answers
54
views
How to read multiple expressions from stream?
When calling (read "(+ 1 2) (+ 2 3)"), I get (+ 1 2), as expected. How can I get the next expression, namely (+ 2 3)?
- 21
0
votes
1
answer
46
views
read-char-from-minibuffer for optional argument
The following counts the number of opening (brcmk-beg) and closing (brcmk-end) braces. Having brcmk-end an optional argument, I would like to print
$begmk nil $count-begmk 0
when the user either ...
- 1,183
0
votes
1
answer
58
views
Reading a word or regular expression from the mini-buffer to a function
What function should I call to read a word or regular expression from the minibuffer? Am writing a function that accepts a word or regular expression and counts the number of matches.
But need to ...
- 1,183
0
votes
1
answer
40
views
read: Transferring an alist (containing a comma) from a file to a variable
I have a file, "/path/to/token-file.el", which contains an alist:
((access
((access_token 123abc456)
(timestamp
((43 5 21 29 12 2021 3 nil 0)
(Wed, 29 Dec 2021 21:05:43 GMT)...
- 18.9k
2
votes
0
answers
28
views
Distinguish expected from erroneous end-of-file in read function?
What is the correct way to use (read (current-buffer)) to read from a buffer until the end of the file is reached?
When no forms remain in a buffer, Emacs signals an error:
(with-temp-buffer
...
- 1,561
0
votes
1
answer
58
views
How to read an s-expression at load-time
Why does it seem impossible to read an s-expression at load-time?
Given this and only this s-expression in my init file:
(save-excursion
(end-of-defun)
(beginning-of-defun)
(setq beg (point))
(...
- 550
6
votes
1
answer
1k
views
How can I convert a string form of a list to an actual list?
I would like to convert these two strings
"(a b c)"
"(9 . 3)"
to these
(a b c)
(9 . 3)
I'd had some luck with the first one evaluating this,
(mapcar 'intern (split-string (string-...
- 333
1
vote
1
answer
114
views
Is there an easy way to use thing-at-point to initialize interactive read string (interactive "sfoo:")
Is there an easy way to use thing-at-point to initialize the contents of an interactive string reading?
I have a function the looks something like this:
(defun foo (string)
(interactive "...
- 329
1
vote
1
answer
211
views
Filter the content read from file
(This follows the answer to the question: Completion of sentences stored in a file.)
Suppose I have a file, the content of which being organized thanks to org-mode:
* Dreams ≠ reality
Please, don'...
- 398
4
votes
1
answer
1k
views
Read first N lines of file into list
The general way this seems to be done using Elisp is to first read the entire file using something like insert-file-contents-literally or find-file-no-select, using split-string on a newline, and then ...
- 4,347
0
votes
1
answer
144
views
How set default number (1) in the interactive custom function
here custom function:
(defun increment-number-at-point(number)
(interactive "nInput increment number:")
(skip-chars-backward "0-9")
(or (looking-at "[0-9]+")
(error "No number at point"))
...
- 3,884
2
votes
1
answer
474
views
What does hash s indicate in lisp
This is the result of
M-: (elfeed-search-selected :ignore-region)
#s(elfeed-entry
("www.cbc.com.com" . "https://www.cbc.com.com/defg/Polyglot-programming_%7E017e364530a5359046?source=rss")
...
- 3,793
1
vote
0
answers
48
views
What methods are available for complex user input?
I am experimenting with writing a plugin which requires quite a bit of user input, its a front end to an api.
A typical request will have 4 required inputs and many optional inputs, obviously I can ...
- 583
4
votes
2
answers
2k
views
How to read elisp file into s-expression?
I have a file of elisp code, say foo.el. I want to turn the content into a s-expression, so that I can play with it. Right now, I use the following method:
Read foo.el into a string.
Turn the string ...
- 161
2
votes
1
answer
300
views
How should you read a Lisp file as Lisp for processing without condition-case?
To help catch predictable errors, I've written my own linting tasks that read the code and report any inconsistencies it finds. One of the hackier pieces to this right now is the following function:
...
- 6,851
1
vote
1
answer
566
views
Read input char without pressing RET
I want to perform the same task as in the function below, but without having to press ENTER every time I select an option.
(defun my-fun ()
(interactive)
(setq something (read-string "Options:\n [...
- 35
1
vote
0
answers
70
views
How do I read and parse other Lisps in Emacs
I am playing with LFE language and I try to improve documentation lookup. Some of my efforts can be seen on my Github repo
I have a function sexp-at-point which return a string enclosed by round ...
- 427
12
votes
1
answer
1k
views
Meaning of period in (. 123)
I learnt . /path/to/file in bash is used to execute a file. Just out of curiosity, I eval something like the following in Emacs
(. 123)
⇒ 123
(read "(. 123)")
⇒ 123
It looks like Emacs ...
- 14.3k
2
votes
1
answer
1k
views
Read a config file and get some value into elisp variable
I'm trying to read a value of variable context from the config file. I use something like this (but have got an error..):
(with-current-buffer
(insert-file-contents "/home/user/liquibase.properties")
...
- 123
3
votes
1
answer
1k
views
How to handle end of file during parsing errors while reading a string?
I was trying to read and eval Lisp forms from a string using a loop, instead of just putting the string into a buffer and using eval-buffer to load everything in the string. That method was mentioned ...
- 1,308
25
votes
3
answers
4k
views
How to evaluate Elisp code contained in a string?
The question pretty much says it all: I have a string containing the source code for a valid Elisp expression, and I would like to evaluate it.
(In Python, for example, the expression eval("1 - 2 + 3"...
- 3,155
2
votes
1
answer
93
views
How to add-to-list to read-in file contents
When I do this (setq v (f-read-text "s.el")) where s.el is of this form
((thing1 . thing2) (thing3 . thing4))
I get v back as one long string. And (setq v (append (f-read-text "s.el"))) doesn't seem ...
- 2,917