mercurial/templates/raw/logentry.tmpl

tests: add (?) flag for optional lines

When the test engine fails to match output on a line marked with (?),
it will simply continue to the next expected line and try again. This
allows simplifying tests that have either version-specific or
non-fixed behavior, for instance:

  $ coin-flip
  heads (?)
  tails (?)

(There's no form of back-tracking attempted, so optional matches
should be specific.)

changeset:   {node}
revision:    {rev}
user:        {author}
date:        {date|rfc822date}
summary:     {desc}
{branches%branchname}{tags%tagname}{bookmarks%bookmarkname}