Source: markdown
Version: 1.0.2~b8-6
Severity: wishlist
Tags: patch
User: reproducible-bui...@lists.alioth.debian.org
Usertags: randomness toolchain
X-Debbugs-Cc: reproducible-b...@lists.alioth.debian.org
Hi,
Whilst working on the Reproducible Builds effort [0] we noticed that
markdown generates output that is not reproducible.
Specifically it encodes some email addresses using random HTML
entities in an attempt to thwart spammers. A patch is attached that
seeds the random number generation with a deterministic value based on
SOURCE_DATE_EPOCH [1].
[0] https://reproducible-builds.org/
[1] https://reproducible-builds.org/specs/source-date-epoch/
Regards,
--
,''`.
: :' : Chris Lamb
`. `'` la...@debian.org / chris-lamb.co.uk
`-
diff --git a/Markdown.pl b/Markdown.pl
index 62e0dfe..0325049 100755
--- a/Markdown.pl
+++ b/Markdown.pl
@@ -1338,7 +1338,7 @@ sub _EncodeEmailAddress {
my $addr = shift;
- srand;
+ srand($ENV{SOURCE_DATE_EPOCH} || time);
my @encode = (
sub { '&#' . ord(shift) . ';' },
sub { '&#x' . sprintf( "%X", ord(shift) ) . ';' },
