git/templates, branch v2.22.2

Update shell scripts to compute empty tree object ID

2018-05-02T04:59:53Z

Several of our shell scripts hard-code the object ID of the empty tree. To avoid any problems when changing hashes, compute this value on startup of the script. For performance, store the value in a variable and reuse it throughout the life of the script. Signed-off-by: brian m. carlson Signed-off-by: Junio C Hamano

fsmonitor: simplify determining the git worktree under Windows

2017-11-13T01:02:20Z

Simplify and speed up the process of finding the git worktree when running on Windows by keeping it in perl and avoiding spawning helper processes. Signed-off-by: Ben Peart Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano

fsmonitor: read from getcwd(), not the PWD environment variable

2017-11-10T05:04:50Z

Though the process has chdir'd to the root of the working tree, the PWD environment variable is only guaranteed to be updated accordingly if a shell is involved -- which is not guaranteed to be the case. That is, if `/usr/bin/perl` is a binary, $ENV{PWD} is unchanged from whatever spawned `git` -- if `/usr/bin/perl` is a trivial shell wrapper to the real `perl`, `$ENV{PWD}` will have been updated to the root of the working copy. Update to read from the Cwd module using the `getcwd` syscall, not the PWD environment variable. The Cygwin case is left unchanged, as it necessarily _does_ go through a shell. Signed-off-by: Alex Vandiver Signed-off-by: Junio C Hamano

fsmonitor: don't bother pretty-printing JSON from watchman

2017-10-30T02:45:56Z

This provides modest performance savings. Benchmarking with the following program, with and without `--no-pretty`, we find savings of 23% (0.316s -> 0.242s) in the git repository, and savings of 8% (5.24s -> 4.86s) on a large repository with 580k files in the working copy. #!/usr/bin/perl use strict; use warnings; use IPC::Open2; use JSON::XS; my $pid = open2(\*CHLD_OUT, \*CHLD_IN, "watchman -j @ARGV") or die "open2() failed: $!\n" . "Falling back to scanning...\n"; my $query = qq|["query", "$ENV{PWD}", {}]|; print CHLD_IN $query; close CHLD_IN; my $response = do {local $/; }; JSON::XS->new->utf8->decode($response); Signed-off-by: Alex Vandiver Signed-off-by: Junio C Hamano

fsmonitor: read entirety of watchman output

2017-10-04T09:58:53Z

In Perl, setting $/ sets the string that is used as the "record separator," which sets the boundary that the `<>` construct reads to. Setting `local $/ = 0666;` evaluates the octal, getting 438, and stringifies it. Thus, the later read from `` stops as soon as it encounters the string "438" in the watchman output, yielding invalid JSON; repositories containing filenames with SHA1 hashes are able to trip this easily. Set `$/` to undefined, thus slurping all output from watchman. Also close STDIN which is provided to watchman, to better guarantee that we cannot deadlock with watchman while both attempting to read. Signed-off-by: Alex Vandiver Signed-off-by: Junio C Hamano

fsmonitor: MINGW support for watchman integration

2017-10-04T02:10:24Z

Instead of just taking $ENV{'PWD'}, use the same logic that converts PWD to $git_work_tree on MSYS_NT in the watchman integration hook script also on MINGW. Signed-off-by: Ben Peart Signed-off-by: Junio C Hamano

fsmonitor: add a sample integration script for Watchman

2017-10-01T08:23:05Z

This script integrates the new fsmonitor capabilities of git with the cross platform Watchman file watching service. To use the script: Download and install Watchman from https://facebook.github.io/watchman/. Rename the sample integration hook from fsmonitor-watchman.sample to fsmonitor-watchman. Configure git to use the extension: git config core.fsmonitor .git/hooks/fsmonitor-watchman Optionally turn on the untracked cache for optimal performance. Signed-off-by: Ben Peart Signed-off-by: Johannes Schindelin Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Christian Couder Signed-off-by: Junio C Hamano

Merge branch 'ma/up-to-date'

2017-09-10T08:08:22Z

Message and doc updates. * ma/up-to-date: treewide: correct several "up-to-date" to "up to date" Documentation/user-manual: update outdated example output

Merge branch 'ks/prepare-commit-msg-sample-fix'

2017-08-23T21:13:07Z

An "oops" fix to a topic that is already in 'master'. * ks/prepare-commit-msg-sample-fix: hook: use correct logical variable

treewide: correct several "up-to-date" to "up to date"

2017-08-23T19:17:22Z

Follow the Oxford style, which says to use "up-to-date" before the noun, but "up to date" after it. Don't change plumbing (specifically send-pack.c, but transport.c (git push) also has the same string). This was produced by grepping for "up-to-date" and "up to date". It turned out we only had to edit in one direction, removing the hyphens. Fix a typo in Documentation/git-diff-index.txt while we're there. Reported-by: Jeffrey Manian Reported-by: STEVEN WHITE Signed-off-by: Martin Ågren Signed-off-by: Junio C Hamano