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Speed up zsh compinit by only checking cache once a day.
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# On slow systems, checking the cached .zcompdump file to see if it must be | |
# regenerated adds a noticable delay to zsh startup. This little hack restricts | |
# it to once a day. It should be pasted into your own completion file. | |
# | |
# The globbing is a little complicated here: | |
# - '#q' is an explicit glob qualifier that makes globbing work within zsh's [[ ]] construct. | |
# - 'N' makes the glob pattern evaluate to nothing when it doesn't match (rather than throw a globbing error) | |
# - '.' matches "regular files" | |
# - 'mh+24' matches files (or directories or whatever) that are older than 24 hours. | |
autoload -Uz compinit | |
if [[ -n ${ZDOTDIR}/.zcompdump(#qN.mh+24) ]]; then | |
compinit; | |
else | |
compinit -C; | |
fi; | |
@aztack It helped. 🙇
This is my take on the problem, it's a tradeoff between efficiency and simplicity:
autoload -Uz compinit; compinit -C # Use cache to reduce startup time by ~0.1s
# Have another thread refresh the cache in the background (subshell to hide output)
(autoload -Uz compinit; compinit &)
Despite the obvious pitfall (having the shell start another thread at startup), I wonder if it's overall a good solution 🤔
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find's manpage is not clear on this, but I believe you want
-mtime +1
to catch a file at least 24h old, rather than exactly 24h old.On OSX, my .zcomdump was several days old, and the above would not trigger until I added the '+'.