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Current Path : /usr/share/zsh/4.3.11/functions/
Current File : //usr/share/zsh/4.3.11/functions/_match
#autoload

# This is intended to be used as a completer function after the normal
# completer as in: `zstyle ":completion:::::" completer _complete _match'.
# It temporarily switches on pattern matching, allowing you to try 
# completion on patterns without having to setopt glob_complete.
#
# Note, however, that this is only really useful if you don't use the
# expand-or-complete function because otherwise the pattern will
# be expanded using globbing.

### Shouldn't be needed any more: [[ _matcher_num -gt 1 ]] && return 1

local tmp opm="$compstate[pattern_match]" ret=1 orig ins
local oms="$_old_match_string"
local ocsi="$compstate[insert]" ocspi="$compstate[pattern_insert]"

# Do nothing if we don't have a pattern.

tmp="${${:-$PREFIX$SUFFIX}#[~=]}"
[[ "$tmp:q" = "$tmp" ]] && return 1

_old_match_string="$PREFIX$SUFFIX$HISTNO"

_tags matches original

zstyle -s ":completion:${curcontext}:" match-original orig
zstyle -s ":completion:${curcontext}:" insert-unambiguous ins

# Try completion without inserting a `*'?

if [[ -n "$orig" ]]; then
  compstate[pattern_match]='-'
  _complete && ret=0
  compstate[pattern_match]="$opm"

  # No completion with inserting `*'?

  [[ ret -eq 1 && "$orig" = only ]] && return 1
fi

if (( ret )); then
  compstate[pattern_match]='*'
  _complete && ret=0
  compstate[pattern_match]="$opm"
fi

if (( ! ret )); then

  if [[ "$ins" = pattern && $compstate[nmatches] -gt 1 ]]; then

    [[ "$oms" = "$PREFIX$SUFFIX$HISTNO" &&
       "$compstate[insert]" = automenu-unambiguous ]] &&
        compstate[insert]=automenu
    [[ "$compstate[insert]" != *menu ]] &&
        compstate[pattern_insert]= compstate[insert]=

# We tried to be clever here, making completion insert unambiguous
# expansions as early as possible, but this is really hard to test
# and the code below probably does more harm than good.    
#
#    [[ $compstate[unambiguous_cursor] -gt $#compstate[unambiguous] ]] &&
#        ins=yes compstate[insert]="$ocsi" compstate[pattern_insert]="$ocspi"
  fi

  if [[ "$ins" = (true|yes|on|1) &&
      $#compstate[unambiguous] -ge ${#:-${PREFIX}${SUFFIX}} ]]
  then 
    compstate[pattern_insert]=unambiguous
  elif _requested original &&
      { [[ compstate[nmatches] -gt 1 ]] ||
	zstyle -t ":completion:${curcontext}:" original }; then
    local expl

    _description -V original expl original

    compadd "$expl[@]" -U -Q - "$PREFIX$SUFFIX"
  fi    
fi

return ret
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