Bryan O'Sullivan <bryano@fb.com> [Thu, 21 Mar 2013 21:07:22 -0700] rev 18794
bash_completion: recognize normal command abbreviations
In many common cases, this eliminates a call to "hg help" to get a
complete command name, thus improving responsiveness.
Bryan O'Sullivan <bryano@fb.com> [Thu, 21 Mar 2013 16:31:29 -0700] rev 18793
completion: selectively use debugpathcomplete in bash_completion
The current bash_completion code can be very slow in a large working
directory. It always uses "hg status" to generate possibly matching
files, which checks the status of every file. We often don't care
about status when completing, so that cost is very high.
As the new debugpathcomplete command does not check the status of
files, it offers much better performance for commands that only
care about completing names.
Bryan O'Sullivan <bryano@fb.com> [Thu, 21 Mar 2013 16:31:28 -0700] rev 18792
completion: add a debugpathcomplete command
The bash_completion code uses "hg status" to generate a list of
possible completions for commands that operate on files in the
working directory. In a large working directory, this can result
in a single tab-completion being very slow (several seconds) as a
result of checking the status of every file, even when there is no
need to check status or no possible matches.
The new debugpathcomplete command gains performance in a few simple
ways:
* Allow completion to operate on just a single directory. When used
to complete the right commands, this considerably reduces the
number of completions returned, at no loss in functionality.
* Never check the status of files. For completions that really must
know if a file is modified, it is faster to use status:
hg status -nm 'glob:myprefix**'
Performance:
Here are the commands used by bash_completion to complete, run in
the root of the mozilla-central working dir (~77,000 files) and
another repo (~165,000 files):
All "normal state" files (used by e.g. remove, revert):
mozilla other
status -nmcd 'glob:**' 1.77 4.10 sec
debugpathcomplete -f -n 0.53 1.26
debugpathcomplete -n 0.17 0.41
("-f" means "complete full paths", rather than the current directory)
Tracked files matching "a":
mozilla other
status -nmcd 'glob:a**' 0.26 0.47
debugpathcomplete -f -n a 0.10 0.24
debugpathcomplete -n a 0.10 0.22
We should be able to further improve completion performance once
the critbit work lands. Right now, our performance is limited by
the need to iterate over all keys in the dirstate.
Bryan O'Sullivan <bryano@fb.com> [Thu, 21 Mar 2013 11:35:34 -0700] rev 18791
tests: add new command to test-debugcomplete
Bryan O'Sullivan <bryano@fb.com> [Thu, 21 Mar 2013 10:51:18 -0700] rev 18790
completion: add a debuglabelcomplete command
When completing a "label" (a symbolic name for a commit), the
bash_completion script currently has to invoke hg three times. For
a large repository, the cost of starting up and loading all the
necessary context over and over is very high.
For instance, in mozilla-central:
time (export HGPLAIN=1; hg tags -q; hg bookmarks -q; hg branches) >/dev/null
0.446 sec
Compare with the debuglabelcomplete command that this commit adds:
time hg debuglabelcomplete >/dev/null
0.148 sec
This greatly helps responsiveness.
Bryan O'Sullivan <bryano@fb.com> [Thu, 21 Mar 2013 09:13:16 -0700] rev 18789
bash_completion: nuke a duplicated function
Simon Heimberg <simohe@besonet.ch> [Thu, 21 Mar 2013 08:56:21 +0100] rev 18788
run-tests: only sort files when not given as argument
os.listdir returns the files in any order. This has to be sorted.
But when given as argument, the user should be allowed to set any order.
This restores the behaviour before
9848a94e2a.
Bryan O'Sullivan <bryano@fb.com> [Wed, 20 Mar 2013 13:40:06 -0700] rev 18787
blackbox: use util.getuser for portability
On Windows, our implementation is more robust than Python's version.
Bryan O'Sullivan <bryano@fb.com> [Wed, 20 Mar 2013 13:40:05 -0700] rev 18786
blackbox: prevent failed I/O from causing hg to abort
Instead, we simply print a warning message if opening the blackbox log
file fails, or if writing to it fails.
Bryan O'Sullivan <bryano@fb.com> [Tue, 19 Mar 2013 16:19:45 -0700] rev 18785
merge with crew-stable