Show full commit messages in 'hg log' when appropriate

* lisp/vc/vc-hg.el (vc-hg-log-format): New variable.
(vc-hg-print-log, vc-hg-expanded-log-entry): Use it.
(http://lists.gnu.org/archive/html/emacs-devel/2015-10/msg02191.html)

1 files changed, 14 insertions, 4 deletions

diff --git a/lisp/vc/vc-hg.el b/lisp/vc/vc-hg.el
index c4d6092d100..8d9493ec210 100644
--- a/lisp/vc/vc-hg.el
+++ b/lisp/vc/vc-hg.el
@@ -259,6 +259,14 @@ highlighting the Log View buffer."
 (defvar vc-hg-log-graph nil
   "If non-nil, use `--graph' in the short log output.")
 
+(defvar vc-hg-log-format (concat "changeset:   {rev}:{node|short}\n"
+                                 "{tags % 'tag:         {tag}\n'}"
+                                 "{if(parents, 'parents:     {parents}\n')}"
+                                 "user:        {author}\n"
+                                 "Date:        {date|date}\n"
+                                 "summary:     {desc}\n\n")
+  "Mercurial log template for `vc-hg-print-log' long format.")
+
 (defun vc-hg-print-log (files buffer &optional shortlog start-revision limit)
   "Print commit log associated with FILES into specified BUFFER.
 If SHORTLOG is non-nil, use a short format based on `vc-hg-root-log-format'.
@@ -276,9 +284,11 @@ If LIMIT is non-nil, show no more than this many entries."
              (nconc
               (when start-revision (list (format "-r%s:0" start-revision)))
               (when limit (list "-l" (format "%s" limit)))
-              (when shortlog `(,@(if vc-hg-log-graph '("--graph"))
-                               "--template"
-                               ,(car vc-hg-root-log-format)))
+              (if shortlog
+                  `(,@(if vc-hg-log-graph '("--graph"))
+                    "--template"
+                    ,(car vc-hg-root-log-format))
+                `("--template" ,vc-hg-log-format))
               vc-hg-log-switches)))))
 
 (defvar log-view-message-re)
@@ -345,7 +355,7 @@ If LIMIT is non-nil, show no more than this many entries."
 
 (defun vc-hg-expanded-log-entry (revision)
   (with-temp-buffer
-    (vc-hg-command t nil nil "log" "-r" revision)
+    (vc-hg-command t nil nil "log" "-r" revision "--template" vc-hg-log-format)
     (goto-char (point-min))
     (unless (eobp)
       ;; Indent the expanded log entry.