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diff --git a/Completion/Base/_regex_arguments b/Completion/Base/_regex_arguments
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--- a/Completion/Base/_regex_arguments
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-#autoload
-
-## usage: _regex_arguments funcname regex
-
-## configuration key used:
-
-# regex_arguments_path
-#  The path to a directory for caching. (default: ~/.zsh/regex_arguments)
-
-##
-
-# _regex_arguments compiles `regex' and emit the result of the state
-# machine into the function `funcname'. `funcname' parses a command line
-# according to `regex' and evaluate appropriate actions in `regex'. Before
-# parsing the command line string is genereted by concatinating `words'
-# (before `PREFIX') and `PREFIX' with a separator NUL ($'\0').
-
-# The `regex' is defined as follows.
-
-## regex word definition:
-
-# pattern = "/" ( glob | "[]" ) "/" [ "+" | "-" ]
-# lookahead = "%" glob "%"
-# guard = "-" zsh-code-to-eval
-# caction = ":" tag ":" descr ":" zsh-code-to-eval
-# action = "{" zsh-code-to-eval "}"
-
-## regex word sequence definition:
-
-# element = pattern [ lookahead ] [ guard ] [ caction ]
-# 
-# regex = element 
-#	| "(" regex ")"
-#	| regex "#"
-#	| ( regex | action ) #
-#	| regex "|" regex
-
-# example:
-
-# compdef _tst tst
-
-# _regex_arguments _tst /$'[^\0]#\0'/ /$'[^\0]#\0'/ :'compadd aaa'
-#  _tst complete `aaa' for first argument.
-#  First $'[^\0]#\0' is required to match with command name.
-
-# _regex_arguments _tst /$'[^\0]#\0'/ \( /$'[^\0]#\0'/ :'compadd aaa' /$'[^\0]#\0'/ :'compadd bbb' \) \#
-#  _tst complete `aaa' for (2i+1)th argument and `bbb' for (2i)th argument.
-
-# _regex_arguments _tst /$'[^\0]#\0'/ \( /$'[^\0]#\0'/ :'compadd aaa' \| /$'[^\0]#\0'/ :'compadd bbb' \) \#
-#  _tst complete `aaa' or `bbb'.
-
-## Recursive decent regex parser
-
-# return status of parser functions:
-
-# 0 : success
-# 1 : parse error
-# 2 : fatal parse error
-
-_ra_comp () {
-  _ra_actions=("$_ra_actions[@]" "$1")
-}
-
-_regex_arguments () {
-  local regex funcname="$1"
-  shift
-  regex=(${@:/(#b):(*)/":_ra_comp ${(qqqq)match[1]}"})
-
-  eval \
-  "$funcname"' () {
-    local _ra_p1 _ra_p2 _ra_left _ra_right _ra_com expl tmp nm="$compstate[nmatches]"
-    local _ra_actions _ra_line="${(pj:\0:)${(@)words[1,CURRENT - 1]:Q}}"$'\''\0'\''"$PREFIX"
-    _ra_actions=()
-    zregexparse -c _ra_p1 _ra_p2 "$_ra_line" '"${(j: :)${(qqqq)regex[@]}}"'
-    case "$?" in
-    0|2) _message "no more arguments";;
-    1) 
-      if [[ "$_ra_line[_ra_p1 + 1, -1]" = *$'\''\0'\''* ]]; then
-	_message "parse failed before current word"
-      else
-	_ra_left="$_ra_line[_ra_p1 + 1, _ra_p2]"
-	_ra_right="$_ra_line[_ra_p2 + 1, -1]"
-	compset -p $(( $#PREFIX - $#_ra_line + $_ra_p1 ))
-	(( $#_ra_actions )) && _alternative "$_ra_actions[@]"
-      fi
-      ;;
-    3) _message "invalid regex";;
-    esac
-    [[ nm -ne "$compstate[nmatches]" ]]
-  }'
-}
-
-_regex_arguments "$@"