How do you change the default face which Emacs uses to style text on a per-mode basis? For example, say that I am already happy with the face customizations that I have, which include a default fi...

If I have just (set-face-foreground 'font-lock-comment-face "red") (set-face-foreground 'font-lock-string-face "green") in my .emacs, emacs uses the same font-lock for Python strings and for Pyt...

I was trying to port over the "pretty entities" behaviour from org-mode to latex-mode using the Emacs builtin prettify-symbols-mode. This mode uses font-lock-mode to display character sequences in ...

Following code will visually replace "hello world" with "HW" by passing a progn form to font lock keywords. (font-lock-add-keywords nil '(("\\(hello world\\)" (0 (progn (put-text-property (match...

How can I debug font lock keywords I write? For example (progn (font-lock-add-keywords nil '( ;; ("hi1" . 'success) ("hi2" . (intern (concat "warn" "ing"))) )) (font-lock-fontify-buffer)) ...

How to highlight all the function's name in Emacs' lisp-mode? I want them bolded. In other words, all the words from ( to the first space. Don't care exceptions like (a . b) Just like GitHub:

Some background, I'm comfortable with Emacs Lisp, and have written lots of lines of it. However I've never written a major mode, so I'm fairly new to how the font-locking mechanism works. For my c...

Basically, I'm trying to syntax highlight the following piece of coffeescript code the way I want it. Explanation of the syntax of coffeescript functions can be found here. nameHere = (tstamp, moo...

I'm using Emacs since a long time and I've customized it quite a lot. I've even written simple ELisp functions and now I'm starting to use macros more and more. I'm not anywhere near a knowledgable...

What is the root mode I need to hook to highlight TODOs in Ruby, Lisp, and C-like languages. I tried the following, but it doesn't highlight TODO in Ruby or Lisp: (defun highlight-todos (font-lock...

I'm trying to switch to Emacs from Vim for a few months and faced the strange problem: when font-lock is on, scrolling in emacs becomes very slow. Example of relevant part of config: (require 'vim...

Admittedly, this is something of a first world problem, but I'm sort of picky about the appearance of the display, and I find it really annoying when some mode sets a new font size, family, bold/it...

I want to display a colored string of text in the minibuffer, but when I use the 'message' function, the text-properties of are stripped.

I am doing small modification to SLIME, so that I can get all currently loaded symbols from Lisp, analyze them and make font-lock fontify them. I managed to do all these steps, but I have a small ...