elide-head: Support more licenses

* lisp/elide-head.el (elide-head-headers-to-hide): Add support for the
Expat License, and more variants of the BSD-2-Clause License.

Add old FSF address.  This fixes a bug reported in 2003:
https://lists.gnu.org/r/bug-gnu-emacs/2003-01/msg00142.html

diff --git a/lisp/elide-head.el b/lisp/elide-head.el
index d2e3ac6a996e9514f75e993176cd52151bdd7283..30772fa514b2c50b42d287dbbf1b80f67dc6e7f8 100644 (file)
--- a/lisp/elide-head.el
+++ b/lisp/elide-head.el
@@ -50,13 +50,16 @@
   :group 'tools)
 
 (defcustom elide-head-headers-to-hide
-  '(("is free software[:;] you can redistribute it" . ; GNU boilerplate
-     "\\(Boston, MA 0211\\(1-1307\\|0-1301\\), USA\\|\
-If not, see <https?://www\\.gnu\\.org/licenses/>\\)\\.")
-    ("The Regents of the University of California\\.  All rights reserved\\." .
-     "SUCH DAMAGE\\.")                               ; BSD
-    ("Permission is hereby granted, free of charge" . ; X11
-     "authorization from the X Consortium\\."))
+  `(("is free software[:;] you can redistribute it" . ; GNU boilerplate
+     "\\(If not, see <https?://www\\.gnu\\.org/licenses/>\\|\
+Boston, MA 0211\\(1-1307\\|0-1301\\), USA\\|\
+675 Mass Ave, Cambridge, MA 02139, USA\\)\\.")
+    (,(rx (or "The Regents of the University of California.  All rights reserved."
+              "Redistribution and use in source and binary"))
+     . "THE POSSIBILITY OF SUCH DAMAGE\\.") ; BSD
+    ("Permission is hereby granted, free of charge" .
+     ,(rx (or "authorization from the X Consortium."           ; X11
+              "THE USE OR OTHER DEALINGS IN THE SOFTWARE.")))) ; Expat
   "Alist of regexps defining start and end of text to elide.
 
 The cars of elements of the list are searched for in order.  Text is
@@ -64,7 +67,8 @@ elided with an invisible overlay from the end of the line where the
 first match is found to the end of the match for the corresponding
 cdr."
   :type '(alist :key-type  (regexp :tag "Start regexp")
-               :value-type (regexp :tag "End regexp")))
+                :value-type (regexp :tag "End regexp"))
+  :version "29.1")
 
 (defvar-local elide-head-overlay nil)