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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0answers
27 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: ...
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1answer
24 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?
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1answer
27 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/...
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1answer
25 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
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1answer
26 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 /**/ ... ...
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0answers
23 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
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1answer
171 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 ...
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2answers
96 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 ...
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1answer
66 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
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1answer
70 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 ...
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0answers
24 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
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1answer
92 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
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0answers
69 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 ...
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0answers
41 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 ...
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0answers
39 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 ...
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1answer
62 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
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2answers
239 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 ...
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0answers
34 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
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1answer
86 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
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1answer
61 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
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1answer
188 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
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2answers
270 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 ...
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0answers
44 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
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0answers
172 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
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1answer
75 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
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6answers
227 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 ...
3
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2answers
220 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
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2answers
124 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
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1answer
56 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
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2answers
135 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
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0answers
42 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
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1answer
305 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
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1answer
107 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
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0answers
120 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?
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0answers
80 views

Doxygen style for c-doc-comment-style? [duplicate]

The option c-doc-comment-style supports javadoc, autodoc and gtkdoc. Is there a way to get doxygen support? (\returns, \note, \brief... etc)
2
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0answers
95 views

How to modify behavior of syntax highlighting without editing the original source?

There is a bug in C/C++ comment highlighting (bug 11865) Where the fix appears to be to modify the value of c-font-lock-doc-comments Is there a way to do this in my emacs config, instead of having ...
0
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0answers
210 views

How to toggle C/C++ multi-line comments using preprocessor `#if 0` … `#endif`?

Is it possible to configure C/C++ multi-line comments to comment/uncomment selected text using the preprocessor? eg: Before: // a comment Some(code); /* some comment */ After: #if 0 //...
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0answers
80 views

Keyword as comment ender (and starter)

In my previous question I asked about complex comment-start sequence and I think I figured it out, but now I have another problem. Let say we have this mode: (defconst test-font-lock-keywords '(("\\...
1
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1answer
71 views

Complex comment-start (and end) sequence

As far as I understand there is syntax flags only for comment delimiters made up of two characters but if I have comment delimiters of length greater than two characters is it possible to change ...
3
votes
1answer
179 views

How do I teach Emacs to re-wrap /* */ comments?

Is there an existing function, and if not how would I write one, that turns this: /* asdasdasd asdasdasd asdasdasd */ /* asdasdasd asdasdasd asdasdasd asdasdasd asdasdasd */ /* asdasdasd asdasdasd ...
0
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1answer
27 views

Shift text after cursor to specified column

If I have a line like: vec3 pos; // May not be defined. And I want to shift the comment to a specific column number, say 27, such that I get: vec3 pos; // May not be defined. Is ...
1
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0answers
61 views

auto-fill-mode fails in comment with empty second line

Consider the following comments: ;; This is the first line of a comment. ;; ;; This is the second line, which begins a paragraph. If I have ;;auto-fill-mode enabled, I lose the leading space! ;; ...
6
votes
3answers
491 views

Syntax highlighting for comments starting with specific sequence of characters

In clojure, the comment character is ;. clojure-mode syntax highlighting + color scheme greys comment text out. I want emacs to color lines that begin with ;-; with a different color. For example: ...
2
votes
0answers
89 views

How to set web-mode to use single-line comment style instead of multi-line for JavaScript

When commenting C-style code like C++, JavaScript etc., I use single-line comments to be able to uncomment a previously commented region selectively, i.e // This // is // a single-line style // ...
2
votes
0answers
60 views

How to protect LaTeX comment lines from indentation?

When I type <TAB> in a LaTeX file anywhere on a comment line, the comment symbol is moved to the beginning of the previous non-blank line. This also occurs with M-x indent-region. Is there a ...
4
votes
1answer
56 views

How to treat region between conflict markers as comment?

While resolving complex conflicts manually, I usually want emacs to treat conflict markers and region between them as comment, since it breaks major-mode's syntactic analysis (fontification, electric-...
2
votes
2answers
173 views

Is there a way to comment within a line in elisp?

Is it possible to comment the string "emacs" below while keeping this code one line? If so, how? (message "hi") "emacs" (message "hi!")
1
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1answer
48 views

How to auto prefix with comment char when inserting code ref label with org-store-link

There is a way to link to a specific link of code in org babel src block. with org-store-link. Here is an example: ;;; This is comment | line. | (describe-char | (point)) ; | comment | (message | ...
3
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2answers
741 views

How to get emacs to automatically insert block comment prefixes?

I would like to type source code comments of the form: {- ...
4
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1answer
169 views

add a space after the comment delimiter

When I'm writing a comment and press M-j to continue the comment on the next line (using single-line comments), if I press it multiple times say because I want to leave the next comment line "empty" ...