[elpa] externals/auctex ba0b1af 21/23: Prevent inadvertent destruction of list variable

[Tassilo Horn]

branch: externals/auctex
commit ba0b1af33f04378d9dd8758921717d71a1c6cac7
Author: Ikumi Keita <ikumi@ikumi.que.jp>
Commit: Ikumi Keita <ikumi@ikumi.que.jp>

    Prevent inadvertent destruction of list variable
    
    * latex.el (LaTeX-common-initialization): Apply `copy-sequence' to the
    last argument of `delete-dups'+`append'.
---
 latex.el | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/latex.el b/latex.el
index 6a8b2fd..b4fd7d3 100644
--- a/latex.el
+++ b/latex.el
@@ -6219,7 +6219,10 @@ function would return non-nil and `(match-string 1)' 
would return
 
   (setq-local TeX-auto-full-regexp-list
               (delete-dups (append LaTeX-auto-regexp-list
-                                   plain-TeX-auto-regexp-list)))
+                                   ;; Prevent inadvertent destruction
+                                   ;; of `plain-TeX-auto-regexp-list'.
+                                   (copy-sequence
+                                    plain-TeX-auto-regexp-list))))
 
   (LaTeX-set-paragraph-start)
   (setq paragraph-separate