Speed up the prompt on large and/or deep working directories by
stopping grep(1) as soon as it finds a single match, with `-q`.
Also, correct the regexp by adding a ^ anchor and increase its
specificity by accounting for the space in Porcelain Format v1.
Previously, +vi-git-untracked() waited for grep(1) to find all
matches of untracked files, redirecting them away to /dev/null,
before finally concluding that untracked files do indeed exist.
With this patch, I see 4x speedup on a large Git-enabled $HOME:
$ time (git status --porcelain | wc -l)
212
0.01s user 0.02s system 0% cpu 9.021 total
$ time (git status --porcelain | grep '??' &>/dev/null)
0.01s user 0.02s system 0% cpu 12.294 total
$ time (git status --porcelain | grep -q '^?? ' 2>/dev/null)
0.01s user 0.01s system 0% cpu 3.097 total
Note that `-q` for grep(1) is in POSIX (IEEE Std 1003.1-2017):
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html
See discussion https://www.zsh.org/mla/workers/2021/msg01354.html
The example code is a reduced version of my function from workers/47519,
with one bug fixed. (In workers/47519, if $1 doesn't contain spaces -
which is the case under hg mq - then $H and $s will be set to the same
value.)
Tweaked: Extended the contrib.yo hunk with details about mq.
- Document that no code at all is necessary for Pareto correctness
- Remove a recommendation to rely on implementation details (${rrn});
instead, rely only on ${context}, which is a documented API.
Here's a diff-stat:
Doc/Zsh/contrib.yo | 506 ++++++++++++++-------
Functions/VCS_Info/.distfiles | 1 +
Functions/VCS_Info/Backends/VCS_INFO_detect_hg | 14 +-
Functions/VCS_Info/Backends/VCS_INFO_get_data_git | 35 +-
Functions/VCS_Info/Backends/VCS_INFO_get_data_hg | 295 +++++++++----
Functions/VCS_Info/VCS_INFO_formats | 26 +-
Functions/VCS_Info/VCS_INFO_hook | 10 +-
Functions/VCS_Info/VCS_INFO_quilt | 190 ++++++++
Functions/VCS_Info/vcs_info | 30 +-
Misc/.distfiles | 1 +
Misc/vcs_info-examples | 496 ++++++++++++++++++++
11 files changed, 1303 insertions(+), 301 deletions(-)
The major changes are vast improvements for the mercurial (hg) backend
(which was done almost entirely by Seth); improved documentation (mostly
done by Simon and again Seth); quilt support (as an addon and stand
alone, see the manual for details); a number of new hooks and a fair
share of bugfixes.
Felipe Contreras
Daniel Shahaf
Suraj N. Kurapati
Tim Lee
Mikael Magnusson
Jens Schleusener
Daniel Shahaf
Eitan Adler
Marc Finet
Peter Stephenson
Frank Terbeck
Simon Ruderich
Peter Stephenson
Bart Schaefer
Tanaka Akira