branch: elpa
commit a83c4d0e69c12eadd642f13583444fc89badd9f6
Author: Mosè Giordano <[email protected]>
Commit: Mosè Giordano <[email protected]>
Fix compatibility with older Emacs versions
* tex.el: Dynamic determination of `delete-selection' behavior has been
introduced in Emacs 24.3. For previous versions leave
`TeX-insert-dollar' without that property.
---
tex.el | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/tex.el b/tex.el
index 006af7e..7449659 100644
--- a/tex.el
+++ b/tex.el
@@ -6445,7 +6445,18 @@ NAME may be a package, a command, or a document."
(put 'TeX-newline 'delete-selection t)
(put 'TeX-insert-quote 'delete-selection t)
(put 'TeX-insert-backslash 'delete-selection t)
-(put 'TeX-insert-dollar 'delete-selection (lambda () (null TeX-electric-math)))
+;; When `TeX-electric-math' is non-nil, `TeX-insert-dollar' interferes with
+;; `delete-selection-mode', but when it's nil users may want to be able to
+;; delete active region if `delete-selection-mode' is active, see bug#23177.
We
+;; can dynamically determine the behavior of `delete-selection' with
+;; `TeX-insert-dollar' based on the value of `TeX-electric-math'. This
+;; dynamicity has been introduced in Emacs 24.3, for previous versions keep
+;; `TeX-insert-dollar' without this property.
+(if (or (> emacs-major-version 24)
+ (and (= emacs-major-version 24)
+ (>= emacs-minor-version 3)))
+ (put 'TeX-insert-dollar 'delete-selection
+ (lambda () (null TeX-electric-math))))
(defun TeX-how-many (regexp &optional rstart rend)
"Compatibily function for `how-many'.
