On Tue, Dec 1, 2020 at 8:26 PM Jeff King <peff@xxxxxxxx> wrote:
> I was curious how hard it would be to find unused ones, and it is not
> too bad:
>
> find * -type f |
> git check-ignore --stdin -v |
> perl -e '
> my $ignore_file = shift;
> while (<>) {
> /^\Q$ignore_file\E:(\d+)/ and $seen{$1} = 1;
> }
> open(my $fh, "<", $ignore_file);
> while (<$fh>) {
> print "$. $_" unless $seen{$.};
> }
> ' .gitignore
Or to use a more modern language:
find * -type f |
git check-ignore --stdin -v |
ruby -e '
$ignore_file = ARGV.first
$seen = {}
$stdin.each do |e|
e =~ /^#{Regexp.quote($ignore_file)}:(\d+)/ and $seen[$1.to_i - 1] = true
end
ARGF.each_with_index do |e, i|
print "#{i} #{e}" unless $seen[i]
end
' .gitignore
--
Felipe Contreras
