view tests/test-mq-qsave.t @ 16423:a150923b49ba

revlog: avoid an expensive string copy

This showed up in a statprof profile of "hg svn rebuildmeta", which
is read-intensive on the changelog.  This two-line patch improved
the performance of that command by 10%.

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "mq=" >> $HGRCPATH

  $ hg init

  $ echo 'base' > base
  $ hg ci -Ambase
  adding base

  $ hg qnew -mmqbase mqbase

  $ hg qsave
  $ hg qrestore 2
  restoring status: hg patches saved state