revlog: fix resolution of revlog version 0
This partially backs out cecf3f8bccd3, "revlog: always process opener options."
My understanding is that if there's no "revlog1" nor "revlog2" in .hg/requires,
the repository should stick to the v0 format. The reasoning is briefly
described in 31a5973fcf96, "revlog: get rid of defversion."
Maybe we can drop support for missing opener options, but I didn't do that
in this patch.
--- a/mercurial/revlog.py Sun Jan 20 11:57:36 2019 +0900
+++ b/mercurial/revlog.py Mon Jan 21 22:14:29 2019 +0900
@@ -396,6 +396,11 @@
newversionflags = REVLOGV1 | FLAG_INLINE_DATA
if 'generaldelta' in opts:
newversionflags |= FLAG_GENERALDELTA
+ elif getattr(self.opener, 'options', None) is not None:
+ # If options provided but no 'revlog*' found, the repository
+ # would have no 'requires' file in it, which means we have to
+ # stick to the old format.
+ newversionflags = REVLOGV0
else:
newversionflags = REVLOG_DEFAULT_VERSION
--- a/tests/test-clone.t Sun Jan 20 11:57:36 2019 +0900
+++ b/tests/test-clone.t Mon Jan 21 22:14:29 2019 +0900
@@ -717,6 +717,9 @@
$ hg -R src commit -m '#0'
$ hg -R src log -q
0:e1bab28bca43
+ $ hg -R src debugrevlog -c | egrep 'format|flags'
+ format : 0
+ flags : (none)
$ hg clone -U -q src dst
$ hg -R dst log -q
0:e1bab28bca43