Resurrect edebug-set-initial-mode, repurposing it to set the global mode.

lisp/emacs-lisp/edebug.el (edebug-initial-mode-alist): Uncomment, and
amend to match current modes and functions.
(edebug-set-initial-mode): Uncomment and change from setting a defun's
`edebug-initial-mode''s property to setting the variable
`edebug-initial-mode'.
(top level): Create new binding C-x C-a C-m for
`edebug-set-initial-mode'.

doc/lispref/edebug.texi (Edebug Execution Modes): document
`edebug-set-initial-mode' and its new key binding.
(Edebug Options): Mention the new command in the pertinent place.

etc/NEWS: Write entry for this change.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 5cb1af99b56..e823905e8d3 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -460,6 +460,11 @@ typing RET.
 *** If `quick-calc' is called with a prefix argument, insert the
 result of the calculation into the current buffer.
 
++++
+** In Edebug, you can now set the initial mode with C-x C-a C-m.  With
+this you can tell Edebug not to stop at the start of the first
+instrumented function.
+
 ** ElDoc
 *** New minor mode `global-eldoc-mode'
 *** `eldoc-documentation-function' now defaults to `ignore'