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November 24, 2023 10:49
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Makes Zsh print a bell when long-running commands finish. I use this in combination with i3 and throw big compile jobs (or whatever it may be) into another workspace to get a nice visual notification (workspace indicator turns red) when it's done so I don't need to waste time regularly checking on it.
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#!/usr/bin/env zsh | |
# This script prints a bell character when a command finishes | |
# if it has been running for longer than $zbell_duration seconds. | |
# If there are programs that you know run long that you don't | |
# want to bell after, then add them to $zbell_ignore. | |
# | |
# This script uses only zsh builtins so its fast, there's no needless | |
# forking, and its only dependency is zsh and its standard modules | |
# | |
# Written by Jean-Philippe Ouellet <jpo@vt.edu> | |
# Made available under the ISC license. | |
# only do this if we're in an interactive shell | |
[[ -o interactive ]] || return | |
# get $EPOCHSECONDS. builtins are faster than date(1) | |
zmodload zsh/datetime || return | |
# make sure we can register hooks | |
autoload -Uz add-zsh-hook || return | |
# initialize zbell_duration if not set | |
(( ${+zbell_duration} )) || zbell_duration=15 | |
# initialize zbell_ignore if not set | |
(( ${+zbell_ignore} )) || zbell_ignore=($EDITOR $PAGER) | |
# initialize it because otherwise we compare a date and an empty string | |
# the first time we see the prompt. it's fine to have lastcmd empty on the | |
# initial run because it evaluates to an empty string, and splitting an | |
# empty string just results in an empty array. | |
zbell_timestamp=$EPOCHSECONDS | |
# right before we begin to execute something, store the time it started at | |
zbell_begin() { | |
zbell_timestamp=$EPOCHSECONDS | |
zbell_lastcmd=$1 | |
} | |
# when it finishes, if it's been running longer than $zbell_duration, | |
# and we dont have an ignored command in the line, then print a bell. | |
zbell_end() { | |
ran_long=$(( $EPOCHSECONDS - $zbell_timestamp >= $zbell_duration )) | |
has_ignored_cmd=0 | |
for cmd in ${(s:;:)zbell_lastcmd//|/;}; do | |
words=(${(z)cmd}) | |
util=${words[1]} | |
if (( ${zbell_ignore[(i)$util]} <= ${#zbell_ignore} )); then | |
has_ignored_cmd=1 | |
break | |
fi | |
done | |
if (( ! $has_ignored_cmd )) && (( ran_long )); then | |
print -n "\a" | |
fi | |
} | |
# register the functions as hooks | |
add-zsh-hook preexec zbell_begin | |
add-zsh-hook precmd zbell_end |
Thanks for the gist. Would it be possible for the "zbell_ignore" check to expand aliases ? I have alias v=$EDITOR
(for neovim) and even though $EDITOR is by default in zbell_ignore, it isn't matched when I run $ v todo.txt
.
This has been made into a repo: https://github.com/kevinywlui/zlong_alert.zsh
@teto maybe ask there?
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This has been incorporated into Joerg Jaspert's nice collection of ZSH config.