pager: catch ctrl-c on exit (issue3834)

merge with crew

templater: properly handle file_copies with %

localrepo: iterate over manifest key/value pairs in status This saves us a couple of dict lookups in the common case, and improves the performance of the status method by 5% (measured with util.timed) in a repo with a large manifest.

match: more accurately report when we're always going to match This improves the performance of log --patch and --stat by about 20% for moderately large manifests (e.g. mozilla-central) for the common case of no -I/-X patterns.

scmutil: fix NameError on windows Forgot to import util in mercurial.scmwindows. Error was introduced in: changeset: 18862:4c6f7f0dadab user: Kevin Bullock <kbullock@ringworld.org> date: Tue Feb 12 11:36:21 2013 -0600 summary: scmutil: split platform-specific bits into their own modules

commands: exit from the log loop at the right time Previously, we'd run the iterator one more time than necessary, potentially doing a lot of extra work in the process.

cmdutil: use a small initial window with --limit In a large repo, running a command like "log -l1 -p" was expensive because it would always traverse 8 commits, as 8 was the initial window size. We now choose the lesser of 8 or the limit, speeding up the "log -l1 -p" case by a factor of 5.

worker: handle worker failures more aggressively We now wait for worker processes in a separate thread, so that we can spot failures in a timely way, wihout waiting for the progress pipe to drain. If a worker fails, we recover the pre-parallel-update behaviour of failing early by killing its peers before propagating the failure.

worker: fix a race in SIGINT handling This is almost impossible to trigger due to the tiny time window involved.