You have an extra +. YAPE::Regex::Explain

#!/usr/bin/perl --

use strict;
use warnings;

use YAPE::Regex::Explain;
print YAPE::Regex::Explain->new(qr~[^"]+~)->explain;

__END__
The regular expression:

(?-imsx:[^"]+)

matches as follows:

NODE                     EXPLANATION
----------------------------------------------------------------------
(?-imsx:                 group, but do not capture (case-sensitive)
                         (with ^ and $ matching normally) (with . not
                         matching \n) (matching whitespace and #
                         normally):
----------------------------------------------------------------------
  [^"]+                    any character except: '"' (1 or more times
                           (matching the most amount possible))
----------------------------------------------------------------------
)                        end of grouping
----------------------------------------------------------------------
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