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I'm trying to use custom icons from https://materialdesignicons.com/.

(defface mdi-face
  `((t (:family "Material Design Icons")))
  "Face for Material design icons.")

(insert (propertize "\f004" 'face 'mdi-face)))

The font is installed system-wide and is available to Emacs. All I see is a sequence of little squares as if the font wasn't installed.

  • It seems I should escape with the hexadecimal character \xf004. However that specific example gives me a heart instead of a mdi-account. – Mathieu Marques Apr 24 '17 at 20:39
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(insert (propertize "\xf004" 'face 'mdi-face)))
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I'm not sure if you've resolved the problem or not. FWIW, I ran into what you mentioned as your second problem (characters not showing up correctly in spite of using proper hexadecimal) a while ago. I noticed this when adding material icons to all-the-icons.el:

From https://github.com/domtronn/all-the-icons.el/pull/35 :

Note that at the font package version on Debian (1.4.57) has different unicode mappings that the current version that I have included (3.0.1). Icons may not render correctly if a user has an outdated version of the material design icons font. I haven't checked into when this mapping shifted.

If you have a version incongruent with the documentation you are referring to some characters will render as an unexpected character and some will render as tofu ([]).

  • Thanks for the details. However, I had a completely different problem (a silly one at that). When trying to insert a specific icon from mdi, another completely different icon would show up. I still had an old (set-fontset-font "fontset-default" '(#xf000 . #xffff) "Font Awesome") in effect. Add to that, that the escape was done incorrectly like in the question (missing the x). – Mathieu Marques May 25 '17 at 22:27

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