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Current File : //usr/share/zsh/4.3.11/functions/_history_modifiers

#autoload

# Complete history-style modifiers; the first : will have
# been matched and compset -p 1'd.
# The single argument is the type of context:
#   h  history
#   q  glob qualifier
#   p  parameter

local -a list

local type=$1 delim expl
integer global

while true; do
  if [[ -n $PREFIX ]]; then
    local char=$PREFIX[1]

    global=0
    compset -p 1
    case $char in
      ([hretpqQxlu\&])
      # single character modifiers
      ;;

      (s)
      # match delimiter string delimiter string delimiter
      if [[ -z $PREFIX ]]; then
	_delimiters modifier-s
	return
      fi
      delim=$PREFIX[1]
      compset -p 1
      if ! compset -P "[^${delim}]#${delim}[^${delim}]#${delim}"; then
	if compset -P "[^${delim}]#${delim}"; then
	  _message "replacement string"
	else
	  _message "original string"
	fi
	return
      fi
      ;;

      (g)
      global=1
      continue
      ;;
    esac

    # modifier completely matched, see what's next.
    compset -P : && continue
    # if there's something other than colon next, bummer
    [[ -n $PREFIX ]] && return 1

    list=("\::modifier")
    [[ $type = q ]] && list+=("):end of qualifiers")
    # strictly we want a normal suffix if end of qualifiers
    _describe -t delimiters "delimiter" list -Q -S ''
    return
  else
    list=(
      "s:substitute string"
      "&:repeat substitution"
      )
    if (( ! global )); then
      list+=(
	"a:absolute path"
	"A:absolute path resolving symbolic links"
	"g:globally apply s or &"
	"h:head - strip trailing path element"
	"t:tail - strip directories"
	"r:root - strip suffix"
	"e:leave only extension"
	"Q:strip quotes"
	"l:lower case all words"
	"u:upper case all words"
	)
      [[ $type = h ]] && list+=(
	"p:print without executing"
	"x:quote words, breaking on whitespace"
	)
      [[ $type = [hp] ]] && list+=("q:quote to escape further substitutions")
    fi
    _describe -t modifiers "modifier" list -Q -S ''
    return
  fi
done

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