Questions tagged [font-lock]
Font Lock mode is a minor mode, always local to a particular buffer, which assigns faces to the text in the buffer.
198
questions
0
votes
1answer
14 views
Automatically highlight elements in an XML buffer
I spend a lot of time in XML buffers using nxml-mode (Emacs 26). Out of hundreds of XML elements, I am only interested in one or two. How can I have Emacs always show the XML elements I'm interested ...
2
votes
1answer
51 views
How can a list of fields be colored with different colors?
Here's a line from an SQL dump with randomized contents:
REPLACE INTO `drxneuleqtx` (`qd`, `mva`, `cuqtgwm`, `vatoj`, `mrfdgnaheui`, `pacc`, `aaqfjhkv`, `epue`, `kvaerg`, `xevtan`, `vmvwwgci`, `...
0
votes
1answer
56 views
Prioritize color of emphasis faces in Org headers
Observe the following Org buffer, tested on Emacs with no configuration (emacs -q):
Note that bold, italic, and underline are all distinctly fontified in the header. However verbatim and code are not....
1
vote
1answer
20 views
Regex search contains font-lock strings
I am searching in a buffer for a regular expression by this snippet:
(setq jb-revision-version "\\([[:digit:]]+\\.?\\)")
(setq jb-revision-string "\\(\\(Revision\\|Id\\): +\\)")
(progn
(save-...
3
votes
1answer
41 views
How to highlight digit groups of 3 in numerals?
I find it very useful to visually distinguish every 3 digit group of numbers in source code so that I can read it. For example something if I see 1000000 it is fairly easy to see that this is 1M ...
0
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0answers
22 views
Org-mode source blocks are not fontified same as the corresponding language
i am using Zerodark theme and in my org files I noticed that source blocks (emacs-lisp) are not fontified same as when opening an actual lisp file.
I already have this setting:
(setq org-src-...
3
votes
1answer
29 views
How to use font-lock to set other text properties (particularly keymap)?
I'm trying to make a mode where certain strings in the buffer have a special keymap active when the point is inside them. The documentation for font-lock-extra-managed-props and the Elisp info manual ...
0
votes
1answer
27 views
font-lock-keywords weirdness
I am trying to modify pandoc-template-mode.el to deal with $$ which is an escape sequence for literal $ inside the Pandoc template. I have added the "\\$\\$" at the top but I still get bad font ...
2
votes
1answer
50 views
AUCTeX fontification for any command: overkill?
Reading the AUCTeX manual I see that it is possible to add expressions to those one wants to highlight in a .tex file. There are also many specific suggestions around for how to add specific commands ...
0
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0answers
63 views
Markdown and Latex highlighting (font lock) in R Markdown file
I am using polymode to edit rmarkdown files. Exporting to e.g. pdf is super simple and works very well. R code chunks are also properly highlighted.
But:
I do quite often use latex code inside (r)...
0
votes
1answer
23 views
Can you configure python-mode, elpy-mode to apply font-locking to imported library functions?
This question is likely an expansion / duplicate of this question: how to highlight imported functions in python code?
My .py file looks like this:
from math import floor
(max(1, 8))
(floor(3.7))
...
0
votes
1answer
40 views
font-lock keywords and syntax-table mutually interfering
I would like to define something that font-locks a bit like a new sort of string-literal/comment. I might write:
(font-lock-add-keywords 'emacs-lisp-mode
(list '("<<.*>>" 0 'my-custom-...
1
vote
1answer
144 views
Hi-lock code syntax
I write Hi-lock code at the beginning of tex and org buffers, but it doesn't always behave as I expect it to. What does the number 0 mean in the following? What does it mean when it is 1, instead?
% ...
0
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0answers
47 views
Retouching syntax highlight of major mode
I am writing a minor mode to complement haskell-mode,
and I am trying to color subwords in camelCased identifiers with slightly different shades of the same color.
Perhaps this can be done by "...
1
vote
2answers
48 views
Why in dired+ mode some text is strikethrough?
Windows 10, Emacs 26.1, Dired+ (download from here https://www.emacswiki.org/emacs/download/dired%2b.el)
Open some directory:
Here result:
Why some text is strikethrough?
0
votes
1answer
26 views
How to write regex to change the go keywords color?
I want to change the color which in package import go defer in go-mode ,need a regex..these code only change the pacakge word color
(defface my-font-lock-gokeyword-face
`((t (:foreground "#...
1
vote
1answer
33 views
How to make font-lock use my face?
I'm interested in making a major mode to display PGN files nicely. I'm trying to create my own faces since the defaults don't seem super-appropriate.
My mode definition looks like this:
(defface ...
1
vote
1answer
52 views
Improving org-block-begin-line, splitting in several faces
The face org-block-begin-line allows to customize the first line of the following block
#+BEGIN_SRC lang :var arg1=1 arg2=2
...
#+END_SRC
However, I would like to customize the faces within the line,...
1
vote
1answer
29 views
Basic quote regex for font-locking?
I have my own font locking that highlights quotes in comments eg.
/* Some comment 'this is quoted'
* more 'text in an escaped \` quote'.
* Plurals such as Moe's or Joe's should work too. */
...
3
votes
1answer
58 views
Profiling simulated interactive editing
Is there a way to profile or time code that simulates interactive editing?
The gist of what I want to do is that I have some code that runs during font-lock, and sometimes it makes editing sluggish. ...
0
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0answers
16 views
Highlight headings in orgstruct-mode
When I do M-x orgstruct-mode (in, e.g. shell script mode, after setting orgstruct-heading-prefix-regexp to "#") and make some comments serve as headings, these comments look like all other comments. ...
2
votes
0answers
31 views
Why does setting the 'face property trigger fontification?
I'm trying to write a major mode for a programming language with JSX based syntax. Here's a minimal implementation.
(defun example-forward-parse-jsx (start-pos limit)
"Move point past the JSX ...
4
votes
1answer
144 views
Is there a way to disable multi-line string literals in c++-mode?
Suppose I have a short string in C++ and I accidentally delete the double quote that ends it. What Emacs does is highlight the rest of the code as a single very long string, which messes up all the ...
2
votes
1answer
133 views
Replacing a string with symbols using font-lock?
I'm trying to make a font lock hook to replace strings of text for a mathmatical notation plugin.
So I'm thinking " / " (note the spaces) will turn into " ÷ ", but "/" won't. (It's a package mainly ...
0
votes
2answers
195 views
hl-line-mode interferes with custom syntax highlighting [duplicate]
Recently, using fic-mode as reference, I implemented a way for words like TODO, etc. to be highlighted. Here is the code:
(defun todo/pos-in-doc-or-comment-region-p (pos)
(memq (get-char-property ...
0
votes
0answers
26 views
Customize the colour of term in description list
Currently the term and its description doesn't look different at all from each other (I have attached a image). I want the term to have a different colour, preferably red.
I found some resources on ...
1
vote
1answer
123 views
highlight-regexp groups for syntax highlighting
I want to highlight certain words to a color using highlight-regexp. The words I want to highlight are "fn", "let", "mut", etc. for rust development.
The code I have so far is this:
(add-hook '...
1
vote
1answer
42 views
Use `defun` font-locking for other keywords
I'm using the tco.el package, which provides tail-call optimisation for functions in elisp that call themselves in tail-position. The way such functions are identified is by using defun-tco instead of ...
1
vote
1answer
53 views
How to defeat the fontification of colour literals in css-mode?
Emacs css-mode is fontifying my colour literals. For example:
This makes the text harder to read.
I tried to defeat it with the following in my .emacs.
(Note: this matches on ‘hsl’ because those ...
0
votes
3answers
60 views
highlight-regexp: what's the variable in which they are stored?
I need to write a macro, with-temp-highlight-regexps, that evaluates BODY and than restores the previous highlighted regexps (created with the highlight-regexp function). I thought I could do it by ...
1
vote
2answers
123 views
Fontify headline with todo keyword color
I would like to fontify headlines with the same color/weight as their TODO keywords. So for example, the default is like this:
TODO Headline
And I want it to look like this:
TODO Headline
Any ...
1
vote
0answers
81 views
Make text Invisible with font-lock-keywords
I'm interested in changing my org-mode buffers to have a better looking logbook. My ideal state to end up in is that text that looks like this:
- State "WAITING" from "WAITING" [2018-11-16 Fri ...
0
votes
2answers
55 views
font-lock limits ignored in anchored matchers
I think I might have found a bug in GNU Emacs but I want to check my understanding first.
In Search Based Fontification it is possible to specify a function as a matcher. It must obey the contract
...
1
vote
1answer
40 views
Font lock mode not picking up keywords
Emacs version 26.1, compiled on CentOS 7.5 , running ada-mode 5.3.1.
The parser works correctly, but the problem is that keywords aren't being coloured. When I run describe font on the keyword, it is ...
3
votes
2answers
46 views
how can I unit test my font-face rules?
I would like to unit test my font-face keyword rules against some source code data sets.
It sounds like it should be quite easy: open the source file, enable the mode, force fontification, dump out ...
3
votes
0answers
36 views
deeply nested loops and conditionals
I am refactoring legacy code. Looks like:
for (int i = 0; i < something.length; i++) {
....
....
lots of code here
....
if (a.good != b.bad) {
....
.... ....
...
1
vote
0answers
46 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
vote
0answers
41 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 ...
5
votes
0answers
152 views
Apply ANSI color escape sequences for Org Babel results
Feature
There is a nice built-in Emacs feature to colorize strings with ANSI color escape sequences. So evaluating the following Elisp code, will insert the "Test text" at the point with proper ...
0
votes
1answer
54 views
Determine the face(s) that would be applied to a character inserted at point, after font-lock does its thing?
Suppose I am trying to write a major mode. In this mode, certain ordinary characters should have special "electric" behavior when typed, but only in some contexts (e.g. in code but not in strings or ...
0
votes
1answer
49 views
with-temp-buffer removes text properties
Given e.g. (with-temp-buffer (clojure-mode) (insert ":hello") (buffer-string)), I'd expected the result to be propertized, however it isn't.
How to get a propertized string out of a temporary buffer?
0
votes
1answer
504 views
Dynamic syntax highlighting (font-lock-mode) stops working in emacs 25.3
About 15-20 minutes into using emacs my syntax highlighting stops dynamically updating. Instead any new text just uses the color of the text right before it.
Any ideas on how to debug this issue or ...
1
vote
0answers
92 views
Fix org-mode agenda highlighting
I'm having an issue with highlighting in Org agenda:
Can't make the link and tags Gray when the item is marked as Done. I've tried to play with different properties of the font-lock definition, but ...
1
vote
2answers
177 views
Why are code blocks and code literals displaying with large face in markdown
In markdown mode, all of the fenced code blocks and inline code literal strings are displaying with this very large font. The size is large, and also I'm pretty sure it isn't the same font as the ...
3
votes
2answers
97 views
ANSI / xterm font-locking
I have a buffer with terminal escape codes in it and I want them to be colored:
I was able to do this with (ansi-color-apply-on-region (point-min) (point-max)):
However, my file is really big and ...
2
votes
1answer
81 views
Why can't I fontify an indirect buffer?
I like using indirect buffers and narrowing to work on multiple sections of code simultaneously.
I noticed recently that if I disable font-lock-mode in an indirect buffer then I cannot get proper ...
1
vote
0answers
51 views
No font lock in org-mode
When I the first time enter an org-mode buffer, I get no font lock at all unless I revert-buffer or reopen the file. Even I turn on the debug mode, no error is emit.
How should I debug and fix this?
2
votes
1answer
56 views
Preventing syntax highlighting in the wrap-prefix
When Emacs wraps long lines, is there a way to prevent the wrap prefix from having syntax highlighting (font-lock) or any such special properties?
Specifically, I have the following settings:
;; ...
1
vote
1answer
130 views
Replacing autoref command format specification in auctex's font-latex-match-reference-keywords-local
With some help I have redefined the autoref command to take an optional argument, see https://tex.stackexchange.com/questions/428229/autoref-with-optional-argument-text-in-generated-link
Now I am ...
0
votes
1answer
94 views
Search based fontification not working
In trying to learn Emacs Lisp on Emacs 25.3.1, I decided to implement a minimal version of fic-mode. Following is the code:
(defun todo/pos-in-doc-or-comment-region-p (pos)
(memq (get-char-property ...
