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.zprezto/modules/zbell/init.zsh

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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 $zbell_duration,
+# and we dont have an ignored command in the line, then print a bell.
+zbell_end() {
+  ret_code=$?
+
+  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
+    if [[ $ret_code != 0 ]]; then
+      print -n "\a"
+      sleep 0.3
+    fi
+    print -n "\a"
+  fi
+}
+
+# register the functions as hooks
+add-zsh-hook preexec zbell_begin
+add-zsh-hook precmd zbell_end