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#autoload

# If given the `-m <pattern>' option, this tries to complete only pids
# of processes whose command line match the `<pattern>'.

local list expl match desc listargs args

_wanted processes expl 'process ID' || return 1

if [[ "$1" = -m ]]; then
  match="${2}*"
  shift 2
fi

_style -a ps list-arguments listargs
_style -a ps arguments args
(( $#listargs )) || listargs=( "$args[@]" )

if _style processes description; then
  list=("${(@Mr:COLUMNS-1:)${(f@)$(ps $listargs 2>/dev/null)}[2,-1]:#[ 	]#${PREFIX}[0-9]#${SUFFIX}[ 	]*${~match}}")
  desc=(-ld list)
else
  desc=()
fi

compadd "$expl[@]" "$@" "$desc[@]" - \
    ${${${(M)${(f)"$(ps $args 2>/dev/null)"}[2,-1]:#*${~match}}## #}%% *}