Sharon Kimble writes: > How can I colorize text within square brackets please, like [fu] ? > > I need them colorized as they will hold reminders for myself at that position whilst I'm writing. > When I posted this question I knew that the answer would probably lie somewhere within font-lock-add-keywords, but I was unable to find it until I started googling for 'font-lock-keyword-face' which I was already using. This search then lead me to these two pages [1] and [2]. And that lead to this code which achieves what I was trying to accomplish, the text within the square boxes to be coloured totally different from its surrounding text, meaning that now I can write my book and leave myself reminders of various questions, which when I've found the answers can then be deleted. --8<---------------cut here---------------start------------->8--- #+BEGIN_SRC emacs-lisp (font-lock-add-keywords 'org-mode '(("\\[\\(.*\\)\\]" 1 font-lock-type-face prepend))) #+END_SRC --8<---------------cut here---------------end--------------->8--- Thanks Sharon. [1] - https://stackoverflow.com/questions/7401787/emacs-mode-how-to-specify-that-thing-in-square-brackets-should-be-colored [2] - https://www.gnu.org/software/emacs/manual/html_node/elisp/Faces-for-Font-Lock.html -- A taste of linux = http://www.sharons.org.uk TGmeds = http://www.tgmeds.org.uk DrugFacts = https://www.drugfacts.org.uk Debian 9.5, fluxbox 1.3.7, emacs 26.1.91, org 9.2.1