shelve: restore shelved dirstate explicitly after aborting transaction
Before this patch, "hg shelve" uses aborting a current transaction to
discard temporary changes while shelving.
This assumes that dirstate changes in a transaction scope are kept
even after aborting it. But this assumption will be broken by
"transactional dirstate". See the wiki page below for detail about it.
https://mercurial.selenic.com/wiki/DirstateTransactionPlan
This patch explicitly saves shelved dirstate just before aborting
current transaction, and restore dirstate with it after aborting by
utility function '_aborttransaction()' added by previous patch.
This patch replaces 'if tr: tr.abort()' by 'lockmod.release(tr)',
because the former is already done in '_aborttransaction()' (and the
latter has no effect), if current transaction is aborted in it
successfully. Otherwise, the latter is enough to trigger aborting.
#!/usr/bin/env python
# Dump revlogs as raw data stream
# $ find .hg/store/ -name "*.i" | xargs dumprevlog > repo.dump
import sys
from mercurial import revlog, node, util
for fp in (sys.stdin, sys.stdout, sys.stderr):
util.setbinary(fp)
for f in sys.argv[1:]:
binopen = lambda fn: open(fn, 'rb')
r = revlog.revlog(binopen, f)
print "file:", f
for i in r:
n = r.node(i)
p = r.parents(n)
d = r.revision(n)
print "node:", node.hex(n)
print "linkrev:", r.linkrev(i)
print "parents:", node.hex(p[0]), node.hex(p[1])
print "length:", len(d)
print "-start-"
print d
print "-end-"