Report elapsed time for command take long time to execute.

timereport.plugin.zsh

typeset -gaU preexec_functions
typeset -gaU precmd_functions

preexec_functions+='preexec_start_timer'
precmd_functions+='precmd_report_time'

_tr_current_cmd="?"
_tr_sec_begin="${SECONDS}"
_tr_ignored="yes"

TIME_REPORT_THRESHOLD=${TIME_REPORT_THRESHOLD:=30}

function preexec_start_timer() {
    if [[ "x$TTY" != "x" ]]; then
        _tr_current_cmd="$2"
        _tr_sec_begin="$SECONDS"
        _tr_ignored=""
    fi
}

function precmd_report_time() {
    local te
    te=$((${SECONDS}-${_tr_sec_begin}))
    if [[ "x${_tr_ignored}" = "x" && $te -gt $TIME_REPORT_THRESHOLD ]] ; then
        _tr_ignored="yes"
        echo "\`${_tr_current_cmd}\` completed in ${te} seconds."
    fi
}