Doesn't understand -i

[yegor256]

$ bibcop -i --fix a.bib
Cannot open file: -i

[oylenshpeegul]

It looks like bibcop.pl accepts anything that doesn't start with two dashes as a file name

https://github.com/yegor256/bibcop/blob/master/bibcop.pl#L834

Perhaps change it to one dash?

my ($file) = grep { not($_ =~ /^-.*$/) } @ARGV;

[yegor256]

@oylenshpeegul indeed, the fix is simple, but we should also write a unit test for it. If you can make a pull request, I will appreciate!

[yegor256]

fixed