Bind RET in Log View mode to a command that toggles a more detailed display.

* lisp/vc/log-view.el: New command log-view-toggle-entry-display for
toggling log entries between concise and detailed forms.
(log-view-toggle-entry-display): New command.
(log-view-mode-map): Bind RET to it.
(log-view-expanded-log-entry-function): New variable.
(log-view-current-entry, log-view-inside-comment-p)
(log-view-current-tag): New functions.
(log-view-toggle-mark-entry): Use log-view-current-entry and
log-view-end-of-defun instead of searching directly with
log-view-message-re.
(log-view-end-of-defun): Likewise.  Add optional ARG for
compatibility with end-of-defun.
(log-view-end-of-defun): Ignore comments and VC buttons.

* lisp/vc/vc-bzr.el (vc-bzr-expanded-log-entry): New function.
(vc-bzr-log-view-mode): Use log-view-expanded-log-entry-function.

1 files changed, 10 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 1a030d5972a..c8bfffcd789 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -608,6 +608,16 @@ the user for specifics, e.g. a merge source.
 
 **** Currently supported by Bzr, Git, and Mercurial.
 
+*** Log entries in some Log View buffers can be toggled to display a
+longer description by typing RET (log-view-toggle-entry-display).
+In the Log View buffers made by `C-x v L' (vc-print-root-log), you can
+use this to display the full log entry for the revision at point.
+
+**** Currently supported by Bzr.
+
+**** Packages using Log View mode can enable this functionality by
+binding `log-view-expanded-log-entry-function' to a suitable function.
+
 ** Miscellaneous
 
 ---