Properly operate on current fileset revision in vc-hg-print-log

* lisp/vc/vc-hg.el (vc-hg-print-log): If start-revision is nil,
reliably log the working revision. (bug#73604)

1 files changed, 6 insertions, 3 deletions

diff --git a/lisp/vc/vc-hg.el b/lisp/vc/vc-hg.el
index 876d86dc24f..4cdcfe5cb96 100644
--- a/lisp/vc/vc-hg.el
+++ b/lisp/vc/vc-hg.el
@@ -397,8 +397,11 @@ specific file to query."
 (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'.
-If START-REVISION is non-nil, it is the newest revision to show.
-If LIMIT is non-nil, show no more than this many entries."
+If LIMIT is non-nil, show no more than this many entries.
+
+If START-REVISION is nil, the commit log is printed starting from the
+working directory parent (revset \".\").  If START-REVISION is non-nil,
+the log is printed starting from that revision."
   ;; `vc-do-command' creates the buffer, but we need it before running
   ;; the command.
   (vc-setup-buffer buffer)
@@ -408,8 +411,8 @@ If LIMIT is non-nil, show no more than this many entries."
     (with-current-buffer
         buffer
       (apply #'vc-hg-command buffer 'async files "log"
+             (format "-r%s:0" (or start-revision "."))
              (nconc
-              (when start-revision (list (format "-r%s:0" start-revision)))
               (when limit (list "-l" (format "%s" limit)))
               (when (eq vc-log-view-type 'with-diff)
                 (list "-p"))