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d634a3d333
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
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| .. | ||
| .distfiles | ||
| bash2zshprompt | ||
| c2z | ||
| compctl-examples | ||
| globtests | ||
| globtests.ksh | ||
| job-control-tests | ||
| lete2ctl | ||
| make-zsh-urls | ||
| vcs_info-examples | ||