Add option Info-url-alist

* lisp/info.el (Info-url-alist): New option mapping manuals
to URLs.
(Info-url-for-node): Use it.
* test/lisp/info-tests.el (test-info-urls): Add more tests.
In particular, 'Info-url-for-node' should error when
manual-name is not handled in 'Info-url-alist'.
* etc/NEWS: Announce the change.  (Bug#67615)

1 files changed, 9 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index b249f7e1ecb..7e30cda7226 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -436,6 +436,15 @@ only to specify the 'mouse-4/5/6/7' events generated by older
 configurations such as X11 when the X server does not support at least
 version 2.1 of the X Input Extension, and 'xterm-mouse-mode'.
 
+** Info
+
+---
+*** New user option 'Info-url-alist'.
+This user option associates manual-names with URLs.  It affects the
+'Info-goto-node-web' command.  By default, associations for all
+Emacs-included manuals are set.  Further associations can be added for
+arbitrary Info manuals.
+
 +++
 ** New command 'lldb'.
 Run the LLDB debugger, analogous to the 'gud-gdb' command.