[bug #55557] gropdf can execute arbitrary commands

[Deri James]

Follow-up Comment #1, bug #55557 (project groff):

It looks like putting this line in the program, after any command line flags
have been handled/removed from ARGV:-

map { $_="< ".$_."\0" } @ARGV;

This does a similar job to the code referenced by Colin at:-

https://metacpan.org/source/DAVIDNICO/ARGV-readonly-0.01/lib/ARGV/readonly.pm

Except that it does not add "./" before any space at the start of the
filename, because that will fail if a space is given before a full pathname,
it is only useful if a file in the current directory has embedded leading
spaces in its filename. Even with the gropdf code as it is currently you would
need to pass the filename as "./ filename" to avoid the spaces being ignored.

I believe this line can be added to gropdf, hyphenex, gpinyin, and gperl. I am
not sure about glilypond yet, I need a bit more thought on that, since it does
a lot of work with ARGV in the program args.pl.

Does anyone have a better idea?

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