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From: fatiparty--- via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
To: Help Gnu Emacs <help-gnu-emacs@gnu.org>
Subject: Attribute names when calling face-attribute
Date: Thu, 13 Jan 2022 01:34:53 +0100 (CET)	[thread overview]
Message-ID: <MtFqxk9--3-2@tutanota.com> (raw)


I am implementing ricci calculus notation.

Regarding the face-attribute function.  Is the attribute pre-defined or can
I select the attribute name?

For instance, could I call "(face-attribute 'default :size)" rather than
"(face-attribute 'default :height)"?
Here is my function

(defun ricci-size (size)
  "Return integer SIZE of superior and inferior glyph.
SIZE  typeface height. Integer scaled in 1/10 of point size.
Not smaller than value set by `ricci-minsize'."

  (ceiling
     (max
        (if (integerp ricci-minsize)
        ricci-minsize
      (condition-case nil ; For bootstrapping.
          (* ricci-minsize
         (face-attribute 'default :height))
        (error 0)))
    (* height ricci-scale))))  ; assumes height is integer.


             reply	other threads:[~2022-01-13  0:34 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-13  0:34 fatiparty--- via Users list for the GNU Emacs text editor [this message]
2022-01-13  0:54 ` Attribute names when calling face-attribute Emanuel Berg via Users list for the GNU Emacs text editor
2022-01-13  1:09   ` fatiparty--- via Users list for the GNU Emacs text editor
2022-01-13  1:36     ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-01-13  2:20       ` fatiparty--- via Users list for the GNU Emacs text editor
2022-01-13  4:11         ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-01-13  8:20 ` Eli Zaretskii

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