Questions tagged [backquote]
The backquote tag has no usage guidance.
27
questions
0
votes
1answer
83 views
Cons interpolation
I want to be able to write a cons with some of the cells being placeholders for later evaluation. I know I can use backquote constructs, but it tries to evaluate the cons immediately.
To clarify, ...
1
vote
0answers
14 views
Passing string as arg to apply function [duplicate]
I want to call clone-indirect-buffer or clone-indirect-buffer-other-window within a function dependent on the prefix. To do this, I assign the appropriate clone function to a variable using let. ...
0
votes
2answers
32 views
How to properly use defcustom with backquote / comma grammar? (to edit a mode's font-lock-keywords)
I'm trying to edit a mode's font-lock-keywords variable to use defcustom instead of defconst (which it was using previously). Obviously, this is because I want to be able to easily customize the mode'...
0
votes
0answers
32 views
What's the difference between ' (quote) and ` (grave accent) [duplicate]
I've seen both used to quote symbols and list.
What's the difference between them?
When should I use one or the other?
3
votes
1answer
211 views
How to highlight back-tick quoted strings in code-comments?
Since back-ticks are often used for literals, is there a way I can highlight these in code comments?
So this:
# This is a comment, this is a literal: `4 + 4`.
# let's make things interesting (`...
0
votes
1answer
76 views
string-join list with function as list member
I want to string-join a list of strings, one of which is returned by a function call.
Like this:
(defun foobar () "foobar")
(string-join '("foo" (foobar) "bar") "|&...
1
vote
0answers
22 views
Include an element in a backquoted list only if it is non-nil
This is the "am I missing something obvious?" kind of question.
I would like to use backquotes in some way to make a value appear in a list only if it's not nil. So, for instance, given x, ...
1
vote
1answer
49 views
Adding keywords programmatically using the display property
I've added some keywords using the following construct (where tag-todo and tag-note are variable holding a SVG image and tag-key () is a function returning a SVG image):
(font-lock-add-keywords nil
...
2
votes
1answer
208 views
eval and quotes
I am trying to execute the code here, which I copy below
(defun buffer-local-set-key (key func)
(interactive "KSet key on this buffer: \naCommand: ")
(let ((name (format "%s-magic" (...
2
votes
1answer
205 views
Concat in Org Easy Templates [duplicate]
I have a variety of org easy templates. I have a new file template which includes a #+DATE header that I'd like to populate with the current date [at the time the template is called].
The ...
0
votes
1answer
63 views
org-capture evaluate each time without currying
Recently my org-mode config broke. And i started using ` and , to get it to work again. But now i have the issue that a function call (dl/capture-report-date-file) gets evaluated once and curries the ...
0
votes
1answer
45 views
cons a symbol with a variable and return as a symbol [duplicate]
How can I make fun2 return as the same as fun1?
(defun fun1 ()
'((hello . "test"))) ; <= returns ((hello . "test"))
(defun fun2 (str)
'((hello . str))) ; <= this is wrong! should return ((...
1
vote
1answer
173 views
Unconsumed commas in double-backquoted lists
I'm writing a macro which calls a helper function. I need to return a list like this:
`(s -- (cons 'commentary s))
I have tried many combinations, but I can't seem to get what I need without an ...
1
vote
1answer
75 views
What is missing to show the desktop-dirname in the frame title? [duplicate]
I tried to get the value of desktop-dirname into the title of a frame:
(setq frame-title-format '("%b Desktop: "
(car (last (split-string desktop-dirname "/" t)))))
The (...
0
votes
0answers
40 views
elisp - construct a quasi-alist from variable [duplicate]
To construct a quasi-alist, case 1 is using hardcode string; case 2 is using a variable filename to replace the hadcode string. but case 2 doesn't work as expected (should the same as case 1).
#+...
0
votes
1answer
60 views
prin1 abbreviates form with "..." despite expression-print-level?
I have the following function to produce a form that can be "printed" to a ~/.gnus file to configure gnus to use a certain stmp and imap server for an account:
(defun gnus-imap-smtp-form (email smtp-...
0
votes
1answer
170 views
Problems with setting the default font
I'm trying to set the default font for my Emacs based on a variable (so I can use a different font on a different machine):
(setq fontspec (concat ck-font-name "-" (number-to-string ck-font-size)))
(...
0
votes
0answers
102 views
alist error when value created using (concat string1 string2) [duplicate]
I'm really confused with what's happening here.
In my config for backups I've the line (setq backup-directory-alist '(("" . "~/.emacs.d/backup/per-save"))) and I've a defined a variable in my init....
asked Dec 19 '16 at 13:11
Chakravarthy Raghunandan
2,7921 gold badge14 silver badges38 bronze badges
2
votes
1answer
189 views
How to use ,var-name (defvar) syntax in org-publish-project-alist? Init file is in form of org-mode
I have following function as part of my emacs configuration.org settings for publishing org to html.
(defvar website-html-preamble
"<nav>
<ul class="nav nav-tabs">
<li role="...
4
votes
2answers
386 views
Elisp backquote comma eval puts a space in between
Here's an example:
(defmacro test (arg)
`(message foo-,arg))
(defmacro test-with-space (arg)
`(message foo- ,arg))
(macroexpand-1 '(test-with-space bar))
(macroexpand-1 '(test bar))
Both eval ...
5
votes
1answer
881 views
Backward quote, what does it mean in elisp?
I was referring the source code of switch-to-buffer in elisp source code, window.el.gz. I am seeing some backward single quotes like, `
I know single quote is used to refer to symbols but what does ...
5
votes
1answer
353 views
Is there any difference between \` and backquote?
I was surprised to find that if I use M-x ielm, I get a literal backquote:
ELISP> (read "`foo")
`foo
However, if I use M-: (read "`foo") then *Messages* and the minibuffer show (\` foo).
Are ...
1
vote
1answer
1k views
Can I eval a value in quote? [duplicate]
I have a variable say some-var, its value is a string. I want to use its value in a quote expression.
'(some-var "some string")
The function who is using the above expression reports error because ...
1
vote
1answer
75 views
Are there implicit evaluation rules for backquoted structures?
I was constructing a macro that nested another macro and I ran into something that confused me. If the backquoted macro was the last form in the defmacro it evaluated as expected. If added an ...
5
votes
2answers
1k views
defun vs defmacro and backquote vs list
While looking to exclude the uses of the list function through the backquote substitutes in defmacros, my attempt failed when combined with the let and `let* recipe, together with the gensym ...
20
votes
2answers
5k views
What is the point of quote with single argument and comma? (quote ,arg)
(quote x) makes x not be evaluated, but adding a , in front of x within quote makes it evaluated. What is then the point of using quote with a single argument with a comma in front of it, like so: (...
38
votes
2answers
6k views
How to evaluate the variables before adding them to a list?
The below obviously doesn't work and hence this question.
How do I correct the below code so that the value of somelist becomes '(("abc" . 123)) ?
(setq x "abc")
(setq y 123)
(setq somelist nil)
(...
