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This queue is for tickets about the Data-Dumper CPAN distribution.

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The Basics
Id: 31162
Status: rejected
Priority: 0/
Queue: Data-Dumper

People
Owner: smueller [...] cpan.org
Requestors: RENEEB [...] cpan.org
Cc:
AdminCc:

Bug Information
Severity: (no value)
Broken in: (no value)
Fixed in: (no value)



Subject: Strange behaviour with Useqq for \0
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#!/usr/bin/perl use Data::Dumper; my %hash = ( string => "1\r5\09h\n", test => "1\r4\0t\n" ); my $h = { server => "2\03\04" }; $Data::Dumper::Useqq = 1; print Dumper \%hash,$h; And the output is: $VAR1 = { "test" => "1\r4\0t\n", "string" => "1\r5\0009h\n" }; $VAR2 = { "server" => "2\3\4" }; If \0 appears in a value of a hash just before a character everything is fine. If it is before a digit, three 0's are displayed. If \0 is in the value of a hashref, the 0 is erased...
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Perl parses \000 (note the 3 digits) escapes in a complicated way. \09 seems to be parsed as \0 followed by a 9, because 9 isn't a valid octal digit. \03\04, on the other hand, is treated as \003\004. While it's true that Data::Dumper is surprising you by not always preserving the exact expression of the original literal, the examples you give do parse to the same string -- no information is lost, only formatting.
Marking as "not a bug" as per Greg Lindahl's explanation. Best regards, Steffen


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