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zsh/Completion/Core/_match
1999-07-12 17:02:40 +00:00

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#autoload
# This is intended to be used as a completer function after the normal
# completer as in: `compconf 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.
#
# Configuration keys used:
#
# match_original
# If this is set to a `only', pattern matching will only be tried
# with the string from the line. If it is set to any other non-empty
# string, the original pattern will be tried first and if that yields
# no completions, matching will be tried again with a `*' inserted
# at the cursor position. If this key is not set or set to an empty
# string, matching will only be attempted with the `*' inserted.
#
# match_insert
# If this is set to a string starting with `unambig', menucompletion
# will only be turned on if no unambiguous string could be built
# that is at least as long as the original string.
local tmp opm="$compstate[pattern_match]" ret=0
# Do nothing if we don't have a pattern or there are still global
# match specifications to try.
tmp="${${:-$PREFIX$SUFFIX}#[~=]}"
[[ "$tmp:q" = "$tmp" ||
compstate[matcher] -ne compstate[total_matchers] ]] && return 1
# Try completion without inserting a `*'?
if [[ -n "$compconfig[match_original]" ]]; then
compstate[matcher]=-1
compstate[pattern_match]='-'
_complete && ret=1
compstate[pattern_match]="$opm"
compstate[matcher]="$compstate[total_matchers]"
if (( ret )); then
[[ "$compconfig[match_insert]" = unambig* &&
$#compstate[unambiguous] -ge ${#:-${PREFIX}${SUFFIX}} ]] &&
compstate[pattern_insert]=unambiguous
return 0
fi
fi
# No completion with inserting `*'?
[[ "$compconfig[match_original]" = only ]] && return 1
compstate[matcher]=-1
compstate[pattern_match]='*'
_complete && ret=1
compstate[pattern_match]="$opm"
compstate[matcher]="$compstate[total_matchers]"
[[ ret -eq 1 && "$compconfig[match_insert]" = unambig* &&
$#compstate[unambiguous] -ge ${#:-${PREFIX}${SUFFIX}} ]] &&
compstate[pattern_insert]=unambiguous
return 1-ret