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In LaTeX mathematics can be indicated by a variety of different
methods: toggles (like dollar signs), macros and environments. Math
constructs known by font-latex are displayed with the face
font-latex-math-face
. Support for dollar signs and shorthands
like ‘\(...\)’ or ‘\[...\]’ is built-in and not customizable.
Support for other math macros and environments can be adapted by
customizing the variables font-latex-match-math-command-keywords
and texmathp-tex-commands
respectively. It is no longer
recommended to customize font-latex-math-environments
.
To convert your customization in font-latex-math-environments
into texmathp-tex-commands
, please register your own math
environments, together with starred variants if any, as entries of
env-on
type in texmathp-tex-commands
, then clear out
font-latex-math-environments
. You have to restart Emacs for this
new customization to take effect for fontification.
In order to make math constructs more readable, font-latex displays
subscript and superscript parts in a smaller font and raised or lowered
respectively. This fontification feature can be controlled with the
variables font-latex-fontify-script
and
font-latex-script-display
.
If non-nil
, fontify subscript and superscript strings. Concretely,
this means that the scripts are raised or lowered.
Another possiblity is setting this variable to the symbol
multi-level
. In this case, in a formula x^{y^z}, y is
raised above and smaller than x, and z is raised above and
smaller than y. With many script levels, the text might become too
small to be readable. (See font-latex-fontify-script-max-level
below.)
Lastly, you can set this variable to invisible
whose behavior is
like multi-level
, and in addition the super-/subscript characters
^ and _ are not displayed.
Maximum scriptification level for which script faces are applied.
The faces font-latex-superscript-face
and
font-latex-subscript-face
define custom :height
values <
1.0. Therefore, scripts are displayed with a slightly smaller font than
normal math text. If font-latex-fontify-script
is
multi-level
or invisible
, the font size becomes too small
to be readable after a few levels. This option allows to specify the
maximum level after which the size of the script text won’t be shrunken
anymore.
For example, in the expression x^{y^{z^a_b}}, x has scriptification level 0, y has level 1, z has level 2, and both a and b have scriptification level 3.
If font-latex-fontify-script-max-level
was 2, then z, a,
and b would have the same font size. If it was 3 or more, then
a and b were smaller than z just in the same way as z is
smaller than y and y is smaller than x.
The script characters ‘^’ and ‘_’ themselves are also
fontified with an own face named font-latex-script-char-face
.
Display specification for subscript and superscript content. The car is used for subscript, the cdr is used for superscript. The feature is implemented using so-called display properties. For information on what exactly to specify for the values, see (elisp)Other Display Specs section ‘Other Display Specifications’ in GNU Emacs Lisp Reference Manual.
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