Make Gnus recognise "git am" diffs in all groups

* lisp/gnus/mm-uu.el (mm-uu-diff-groups-regexp): Recognise diffs
in all groups (bug#32730).

2 files changed, 6 insertions, 3 deletions

diff --git a/etc/NEWS b/etc/NEWS
index c13d879f1a7..43411b7d4f1 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1142,6 +1142,10 @@ Of course it will still find it if you have it in "~/.ecompleterc".
 
 ** Gnus
 
+---
+*** 'mm-uu-diff-groups-regexp' now defaults to matching all groups,
+which means that "git am" diffs are recognised everywhere.
+
 +++
 *** Two new Gnus summary mode navigation commands have been added,
 bound to the '[' and ']' keys: 'gnus-summary-prev-unseen-article' and
diff --git a/lisp/gnus/mm-uu.el b/lisp/gnus/mm-uu.el
index fec3986dedd..39cad57212d 100644
--- a/lisp/gnus/mm-uu.el
+++ b/lisp/gnus/mm-uu.el
@@ -77,10 +77,9 @@ This can be either \"inline\" or \"attachment\".")
   :type 'regexp
   :group 'gnus-article-mime)
 
-(defcustom mm-uu-diff-groups-regexp
-  "\\(gmane\\|gnu\\)\\..*\\(diff\\|commit\\|cvs\\|bug\\|devel\\)"
+(defcustom mm-uu-diff-groups-regexp "."
   "Regexp matching diff groups."
-  :version "22.1"
+  :version "27.1"
   :type 'regexp
   :group 'gnus-article-mime)