[BUG] org-latex-packages-alist type specification [9.6.3 (release_9.6.3-2-gf2949d @ /usr/local/share/emacs/29.0.90/lisp/org/)]

[Gustavo Barros <gusbrs.2016@gmail.com>]

Hi All,

I'm testing here the new pretest for Emacs 29, and I noticed a small
problem in the type specification of the `org-latex-packages-alist'
defcustom.

The docstring states that each element of the alist is composed of up
to four elements, but the type specification comprises just the first
three.

So, if you use the new `setopt' to set it, and the variable includes
something like `("AUTO"      "babel"     t ("pdflatex"))', you get a
warning somewhat like:

#+begin_example
Warning (emacs): Value ‘(("final" "microtype" nil) ("" "soul" t) (""
"booktabs" nil) ("AUTO" "babel" t ("pdflatex")) ("autostyle"
"csquotes" nil) "\\MakeAutoQuote{“}{”}" ("" "enumitem" nil)
"\\setlistdepth{8}" "\\renewlist{itemize}{itemize}{8}"
"\\setlist[itemize,1,5]{label=\\textbullet}"
"\\setlist[itemize,2,6]{label=$\\circ$}"
"\\setlist[itemize,3,7]{label=\\textasteriskcentered}"
"\\setlist[itemize,4,8]{label={\\normalfont\\bfseries
\\textendash}}")’ does not match type (repeat (choice (list :tag
options/package pair (string :tag options) (string :tag package)
(boolean :tag Snippet)) (string :tag A line of LaTeX)))
#+end_example

Some testing here shows the offending entry is the one with the fourth
element, that of `babel'.

Best regards,
Gustavo.


Emacs  : GNU Emacs 29.0.90 (build 2, x86_64-pc-linux-gnu, GTK+ Version
3.24.33, cairo version 1.16.0)
 of 2023-04-10
Package: Org mode version 9.6.3 (release_9.6.3-2-gf2949d @
/usr/local/share/emacs/29.0.90/lisp/org/)