Bug #115246 for String-ShellQuote: Can undef be left alone, especially in blank arrays without any elements?

Hi, This isn't really a "bug report" since it's possible that this happens on purpose, but ShellQuote will treat undefs as blank strings. I first noticed this when I shell_quote'd an @ARGV that was empty -- and the result ended up being an array with 1 value of ''. In this case using the array will behave differently than its source if its size is checked during if statements, foreach's, etc. Put simply: an array of 0 elements will return an array of size 1. Of course, I can easily get around it by checking the source array first (and not even bothering to shell_quote() it if it's blank) but some of me wonders if the behaviour of ShellQuote would be better to leave undef scalars as undefs, and blank arrays as blank arrays with a size of 0 / unchanged. Thanks for reading! Version info below: --------------------------------------------------------- sjohnson@pinky:~$ perl -v | lg 2 This is perl 5, version 18, subversion 2 (v5.18.2) built for x86_64-linux-gnu-thread-multi sjohnson@pinky:~$ perlmodver String::ShellQuote String::ShellQuote: 1.04 sjohnson@pinky:~$ uname -a Linux pinky 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux -- smu johnson <smujohnson@gmail.com>