Questions tagged [comment]

is for distinguishing comment lines from code. Emacs uses the same key bindings for manipulating comments in different modes. Emacs handles all the different ways of inserting comments for each of the major modes. Use additional tags to indicate language-specific modes for questions about comments.

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votes
1answer
91 views

Emacs auto-indenting comments in an unhelpful manner

New Emacs user here. Hitting enter after a semicolon commented line in any file type (.el and .lisp at the very least) indents the comment in a very unhelpful way that I have to assume is not intended ...
3
votes
1answer
29 views

Continue comment while editing lisp and when hitting enter

If I'm writing a comment ;; this is a comment ;; this is its second line And I hit enter, I get a new line like this: ;; this is a comment ;; this is its second line Instead of getting a new line ...
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0answers
4 views

How to set block comment style in .dir-locals.el

When I do C-c C-k (c-toggle-comment-style) the value of comment-style remains indent. To achieve the same result as setting block comments, in my .dir-locals.el I have: ((c-mode . ((comment-start . "/...
0
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1answer
42 views

Comment code using elisp

Input and desired output Original code Commented out code: C %% MODULE %% module_name C~ CPR C ## MODULE ## module_name lines of code ...
0
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0answers
37 views

Custom comment with comment-line and comment-dwim

Basically, what I want to do is to customize comment-start and comment-end when invoking different commands to then call comment-dwim or comment-line with them. What I managed to do so far is the ...
0
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0answers
19 views

AUCTeX highlight contents of comment environment as a comment

I sometimes use comment environment in my LaTeX documents. Is there a way to make AUCTeX display contents of this environment as a comment?
0
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1answer
24 views

Comment out / uncomment source blocks on state change in org-mode config file

I started to move my config file to an org-file just recently. I wondered if it was possible to use the TODO state to activate or deactivate source blocks in the entry under the heading. This way it ...
0
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1answer
41 views

How to highlight a single word in comments, which matches a function call?

While there are packages that handle this, I would like to highlight a single word in source code comments, using for example the warning face, when a function call returns t, using the word as input. ...
0
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2answers
47 views

How do I get Emacs to accept a # (hash) sign as a comment starter in a new mode?

I am attempting to develop an Emacs major mode for writing Tecplot macros. The Tecplot macro language has lots of peculiar constructs, such as a # sign for comments and $! for the beginning of a macro ...
3
votes
2answers
48 views

Change behaviour of “comment-region” in org-mode tangled source blocks?

I am experimenting with using org-mode for some of my startup config, and adding (org-babel-load-file (concat user-emacs-directory "config.org")) to my .emacs. Then I use a structure like the ...
0
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0answers
56 views

Org mode link in comments

Is there a way to make links work in comments? # Comment with [[link]] link Error Message: edmacro-parse-keys: C-M- must prefix a single character, not up The link would work only when separated ...
0
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0answers
14 views

How to remove all console.logs() from the buffer and also how to comment all console.logs from the buffer?

When I do a regex-replace and replace with the empty string, the console.logs() are removed but the empty lines still remain. How would I remove these empty lines? Furthermore, how would I replace all ...
1
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2answers
80 views

How to change the company complete backend based on the current syntax?

I would like to have natural language completion (company-ispell for e.g.) but only when editing comments. How should the company back-end be swapped out when editing commensts?
1
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0answers
47 views

Emacs `captain-mode` auto-capitalization in comment

I installed captain-mode, and it worked as expected in org/text modes, but not so quite in programming modes' comment lines. The problem is it can auto-capitalize the first word from the second ...
3
votes
0answers
58 views

Can I use “comment-column” for comments in other modes than emacs-lisp-mode?

Emacs-lisp-mode distinguishes multiple kinds of comments. ; is an "end of line" comment when following code, or a "right-margin" comment obeying comment-column when indented with indent-for-tab-...
0
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0answers
33 views

writegood mode in code

I like to use writegood-mode for my source code comments. I feel that there should be a way to make it check comments only. However, my python files display that kind of things: and so does bash mode:...
1
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0answers
55 views

Set font family for comments

In coq mode I have ligatures being used: instead of "fun", it shows λ in the programming code. But in the comments lambda transformed into a character I can't even copy, so I'll attach a screenshot: ...
0
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1answer
49 views

comment-kill for entire region

Is there a similar command to comment-kill that kills all comments in a given region and saves them to the kill ring?
1
vote
1answer
50 views

(goto-char (region-end)) doesn't set the point to the end of the region

I have written a small elisp script which should put oneline or multiline comments based on the current buffer's major mode. The source file is here: https://github.com/amirteymuri/Com/blob/master/...
0
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1answer
75 views

How to align “end of line comments” in sh-mode?

I moved to column 60 of the first line and evaluated set-comment-column. Then I moved to the second column and called indent-for-comment, but it indents the comment randomly but not at column 60. How ...
2
votes
1answer
42 views

Are comment style flags insufficient to separate SQL comments?

I am trying to understand why SQL mode accepts -* as a comment block start. In sql.el, I read: (defvar sql-mode-syntax-table (let ((table (make-syntax-table))) ;; C-style comments /**/ ... ...
1
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0answers
34 views

Why does sql-mode think -* starts a block comment?

While typing in a SQL mode buffer, I noticed that -* starts a block comment. Why? It happens whenever I type an asterisk/star character (ASCII 42) directly after a simple dash/hyphen/minus character (...
3
votes
1answer
222 views

Can I make “comment-region” comment empty lines?

In LaTeX code I can have: Lorem ipsum dolor sit amet, consectetur \begin{comment} adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis ...
5
votes
2answers
162 views

Is there an emacs command to go to end of code line (before line comment and whitespaces start)

say you have that: stuff indented stuff # commented stuff We already got move-beginning-of-line and back-to-indentation for the left side. Now, for the right side... I'd love to know if you ...
2
votes
1answer
143 views

How to prettify symbols inside comments?

I'm using prettify-symbol mode together with Pragmata Pro.el. Ligatures work perfectly fine in the source code but for some reason with comments they don't. I think I'm missing something since it's ...
1
vote
1answer
221 views

Emacs custom major mode with multiple comment types

I'm trying to write my first (very simple) major mode for Emacs. My goal is to have multiple comment types, but I can't find a way to implement this. Basically, I want my major mode to make ...
0
votes
0answers
35 views

unexpected long indent after colon in web-mode

I have some trouble locating the source of 8 tabs and 3 spaces more than the previous indentation when I'm inside js inside web-mode. These appear after a line that ends with a colon. Example (note ...
6
votes
1answer
126 views

How to prevent emacs from fontifying empty part of the line?

As an example, if I start a one line comment: ;; Comment⏎ Emacs will fontify the the whole line, from the beginning of line, occupying the entire width of the window, as comment. This can be made ...
2
votes
0answers
70 views

Strange comment indentation results

I am working with a simple major mode. The format has one single line comment delimiter, i.e., %. However, I get strange results when running fill-paragraph on a comment. Specifically, the result I ...
1
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0answers
48 views

EMACS doesn't grey out comments

When I comment out code with combination of /* and */ in JavaScript nothing happens with text and it stays the same color. (You can see it in second part of code, one that is not grayed out but is ...
1
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0answers
43 views

Enable `cc-mode` documentation highlightning per minor mode

I am writing a minor mode for enabling support for JML within Java files. I realized the syntax highlighting with cc-mode's support for documentation comments. It works if I set c-doc-comment-style ...
0
votes
1answer
96 views

align doesn't indent multiple lines of C code correctly

This is my simple C code block: int main() { // the enty function in x = 100; // my new variable for(int i=1; i<2012; ++i) { // loop a lot x -= i; } } /* ...
3
votes
2answers
375 views

How to align both of comments and macro of multiple lines with space instead tabs for C/C++ code?

This is my configuration in init.el for C/C++ code which is default value in linux kernel: (setq indent-tabs-mode t) I'm using this style and won't change it to nil. And indentation and alignment ...
2
votes
1answer
56 views

Move point to just before end of a comment

Given that the point is right in front of a comment, how do I move it to the end of the comment, but before the comment end markers? For example: for a C++ // xxx comment, I would like to move the ...
0
votes
1answer
123 views

Why does emacs put a black background on comments?

For some reason emacs shows comments on a black background. The image shows an example from my emacs with the otherwise amazing color theme "aalto-dark" from the color-theme-modern package. I don't ...
0
votes
1answer
65 views

Elisp-Function to always insert “*/” in C-Mode when “/*” was typed

I want to implement the functionality, that i wrote about in the title. Since searching the web for existing solutions didn't give me anything useful, i figured i would just try and implement it ...
1
vote
1answer
259 views

How to fold / collapse the first comment block on file load?

Is there a way to fold the first comment of a file on load? While I don't like code folding in general, it can be handy in this one instance when every file has a boiler plate header which isn't ...
6
votes
2answers
408 views

C++ mode: smartly use /*…*/ for comment-dwim

I want to adjust the behavior of comment-dwim when editing c++ files: When a region is selected that either starts or ends in the middle of a line I would prefer /* ... */ comments. For the other ...
1
vote
0answers
50 views

Font-locking for text inside org-mode COMMENT blocks

While other sorts of #+BEGIN ... #+END blocks seem to get font-locking applied to them (potentially changing foreground and background colours etc.), #+BEGIN_COMMENT ... #+END_COMMENT blocks do not. ...
1
vote
0answers
278 views

How to add additional comment syntax to a mode?

In general, given a major mode with a defined comment syntax, what do I have to define or change to add a new comment syntax? By "adding", I mean setting some new characters so that they work with ...
1
vote
1answer
121 views

Elisp: Inserting Comments

I'm trying to write an elisp program that will insert a section header and footer as a comment. For example, if I need a section called "intro" for my LaTeX document, the following would be inserted: ...
4
votes
6answers
295 views

Search for “foo bar” ignoring comments and newlines

How do I search for "foo bar" ignoring comments and newlines in emacs? For example, given the tex file fragment blah blah foo % comment 1 % comment 2 bar blah blah I'd like to be able to type "foo ...
4
votes
2answers
337 views

White space being inserted before a semicolon in asm-mode

When I try to insert a semicolon in my code (in asm-mode) it seems to indent a certain number of tabs like this (usually 4 it seems): D ; And if I put another semicolon on the next ...
2
votes
2answers
148 views

indentation (with multiline comments) in batch processing

i'm trying to indent a couple of C++-files (and untabify them; and remove trailing whitespace), so i thought about using emacs in batch mode. Since I'm pretty much a noob when it comes to elpa (or ...
2
votes
1answer
66 views

command to mark a block comment as region

Is there an existing EMACS command to select a block comment? That is, I have /** * A Comment */ I want to set the mark ahead of the /** and set the point after */. I realize there are several ...
1
vote
2answers
228 views

Hide only comments

In hs-mode, is there a way to only hide the comments (C-style, delimited by /* ...*/), and no other blocks of code? (there was nothing obvious in M-x customize-group hideshow)
1
vote
0answers
51 views

org-fill-paragraph leaves a comma at end of C style comment

In a src block when there is a C style comment /* ... */ doing an org-fill-paragraph would always put a comma just before the last star, like this: /* Some comment ,*/ Is there a way to stop it from ...
1
vote
1answer
426 views

Indenting within block comments in C-mode Emacs

After writing functions in C/C++, I like to format my block comments that explain a function's purpose, parameters, use, and so on. (See example below) However, to indent my comments in emacs, I ...
3
votes
1answer
117 views

disable strange comment behavior in AUCTeX

When I have a commented line in my TeX file, eg some text that is not commented |%% here is a comment followed by more uncommented text (the | represents point), and I hit RET, point is moved past ...
0
votes
0answers
168 views

How to change the command for comment toggling

spacemacs with Evil uses gcc to toggle whether a line is commented or not. I'd like to change it to ,cc. How should I go about this in my .spacemacs file?