Hi.
I use latest auctex-14.0.6. In Emacs, i use dark color theme.
For a long time I have been annoyed by not being able to see properly
script char ^ and _, like in formulas $x^2$.
Now investigating, in font-latex.el I see:
(defface font-latex-script-char-face
(let ((font '(:inherit underline)))
`((((class grayscale) (background light))
(:foreground "DarkGray" ,@font))
(((class grayscale) (background dark))
(:foreground "gray" ,@font))
(((class color) (background light))
(:foreground "salmon")) <<<--- light color in light bg
(((class color) (background dark))
(:foreground "DarkRed")) <<<--- dark color in light bg
(t (,@font))))
"Face used for the script chars ^ and _."
:group 'font-latex-highlighting-faces)
Here, probably a typo exchanging dark and light fg colors.
Also arguments for \textit{...} and \textbf{...} have poor contrast, so I
decided to check all colors.
PS.: To decide if a color is light or dark, one can convert it to HSL (hue
saturation luminance) and compare 3rd number with 0.5:
(nth 2 (apply 'color-rgb-to-hsl
(color-name-to-rgb COLOR-NAME)))
Summarizing the lot of work done:
- replace OliveDrab (dark) by OliveDrad2 (light) in dark bg.
- replace RosyBrown (light) by RosyBrown4 (mid-dark) in light bg.
- replace DarkGray (surprise: it is light) by gray25 (dark) in light bg.
- exchange salmon <-> DarkRed to get proper contrast, as explained.
To ease the job, I created a patch file, attached.
If you agree with these suggestions, someone with commit permissions please
apply them.
best regards
Miguel
--
Miguel Vinicius Santini Frasson
mvsfras...@gmail.com
--- /home/sme/.emacs.d/elpa/auctex-14.0.6/font-latex.el 2024-07-25 00:59:09.944791937 -0300
+++ font-latex-proposed.el 2024-07-25 01:04:41.936662931 -0300
@@ -1152,7 +1152,7 @@
(((class color) (background light))
(:foreground "DarkOliveGreen" ,@font))
(((class color) (background dark))
- (:foreground "OliveDrab" ,@font))
+ (:foreground "OliveDrab2" ,@font))
(t (,@font))))
"Face used to highlight text to be typeset in bold."
:group 'font-latex-highlighting-faces)
@@ -1166,7 +1166,7 @@
(((class color) (background light))
(:foreground "DarkOliveGreen" ,@font))
(((class color) (background dark))
- (:foreground "OliveDrab" ,@font))
+ (:foreground "OliveDrab2" ,@font))
(t (,@font))))
"Face used to highlight text to be typeset in italic."
:group 'font-latex-highlighting-faces)
@@ -1180,7 +1180,7 @@
(((class color) (background light))
(:foreground "DarkOliveGreen" ,@font))
(((class color) (background dark))
- (:foreground "OliveDrab" ,@font))
+ (:foreground "OliveDrab2" ,@font))
(t (,@font))))
"Face used to highlight text to be underlined."
:group 'font-latex-highlighting-faces)
@@ -1218,7 +1218,7 @@
(((class grayscale) (background dark))
(:foreground "LightGray" ,@font))
(((class color) (background light))
- (:foreground "RosyBrown"))
+ (:foreground "RosyBrown4"))
(((class color) (background dark))
(:foreground "LightSalmon"))
(t (,@font))))
@@ -1266,13 +1266,13 @@
(defface font-latex-script-char-face
(let ((font '(:inherit underline)))
`((((class grayscale) (background light))
- (:foreground "DarkGray" ,@font))
+ (:foreground "gray25" ,@font))
(((class grayscale) (background dark))
(:foreground "gray" ,@font))
(((class color) (background light))
- (:foreground "salmon"))
- (((class color) (background dark))
(:foreground "DarkRed"))
+ (((class color) (background dark))
+ (:foreground "salmon"))
(t (,@font))))
"Face used for the script chars ^ and _."
:group 'font-latex-highlighting-faces)
