Martin von Zweigbergk <martinvonz@google.com> [Thu, 16 Jun 2016 15:15:33 -0700] rev 29371
changegroup: don't send empty subdirectory manifest groups
When grafting/rebasing, it is common for multiple changesets to make
the same change to a subdirectory. When writing the revlog for the
directory, the revlog code already takes care of not writing the entry
again. In 0c2a088ffcc5 (changegroup: prune subdirectory dirlogs too,
2016-02-12), I added the corresponding code in changegroup (not
sending entries the client already has), but I forgot to avoid sending
the entire changegroup if no nodes remained in the pruned
set. Although that's harmless besides the wasted network traffic, the
receiving side was checking for it (copied from the changegroup code
for handling files). This resulted in the client crashing with:
abort: received dir revlog group is empty
Fix by simply not emitting a changegroup for the directory if there
were no changes is it. This matches how files are handled.
Yuya Nishihara <yuya@tcha.org> [Wed, 15 Jun 2016 23:49:56 +0900] rev 29370
chg: ignore SIGINT while waiting pager termination
Otherwise the terminal would be left with unclean state. This is what
fcc4b55876c3 does.
Yuya Nishihara <yuya@tcha.org> [Wed, 15 Jun 2016 23:32:00 +0900] rev 29369
chg: reset signal handlers to default before waiting pager
Our signal handlers forward signals to the server process, but it will
disappear soon after hgc_close(). So we should unregister handlers before
hgc_close(). Otherwise chg would abort due to kill(perrpid, sig) failure.
The problem is spotted by SIGWINCH while waiting pager termination.