Since my d48b284183 ("perl: bump the required Perl version to 5.8 from
5.6.[21]", 2010-09-24), we've depended on 5.8, so there's no reason to
conditionally require Digest::MD5 anymore. It was released with perl
v5.7.3[1]

The initial introduction of the dependency in
e9fdd74e53 ("gitweb: (gr)avatar support", 2009-06-30) says as much,
this also undoes part of the later 2e9c8789b7 ("gitweb: Mention
optional Perl modules in INSTALL", 2011-02-04) since gitweb will
always be run on at least 5.8, so there's no need to mention
Digest::MD5 as a required module in the documentation, let's instead
say that we require perl 5.8.

As with the preceding Net::{SMTP,Domain} change we now unconditionally
"use" the module instead.

1. $ corelist Digest::MD5
   Data for 2015-02-14
   Digest::MD5 was first released with perl v5.7.3

Signed-off-by: Ævar Arnfjörð Bjarmason <ava...@gmail.com>
---
 gitweb/INSTALL     |  3 +--
 gitweb/gitweb.perl | 17 ++++-------------
 2 files changed, 5 insertions(+), 15 deletions(-)

diff --git a/gitweb/INSTALL b/gitweb/INSTALL
index 408f2859d3..a58e6b3c44 100644
--- a/gitweb/INSTALL
+++ b/gitweb/INSTALL
@@ -29,12 +29,11 @@ Requirements
 ------------
 
  - Core git tools
- - Perl
+ - Perl 5.8
  - Perl modules: CGI, Encode, Fcntl, File::Find, File::Basename.
  - web server
 
 The following optional Perl modules are required for extra features
- - Digest::MD5 - for gravatar support
  - CGI::Fast and FCGI - for running gitweb as FastCGI script
  - HTML::TagCloud - for fancy tag cloud in project list view
  - HTTP::Date or Time::ParseDate - to support If-Modified-Since for feeds
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 2417057f2b..2594a4badb 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -20,6 +20,8 @@ use Fcntl ':mode';
 use File::Find qw();
 use File::Basename qw(basename);
 use Time::HiRes qw(gettimeofday tv_interval);
+use Digest::MD5 qw(md5_hex);
+
 binmode STDOUT, ':utf8';
 
 if (!defined($CGI::VERSION) || $CGI::VERSION < 4.08) {
@@ -490,7 +492,6 @@ our %feature = (
        # Currently available providers are gravatar and picon.
        # If an unknown provider is specified, the feature is disabled.
 
-       # Gravatar depends on Digest::MD5.
        # Picon currently relies on the indiana.edu database.
 
        # To enable system wide have in $GITWEB_CONFIG
@@ -1166,18 +1167,8 @@ sub configure_gitweb_features {
        our @snapshot_fmts = gitweb_get_feature('snapshot');
        @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
 
-       # check that the avatar feature is set to a known provider name,
-       # and for each provider check if the dependencies are satisfied.
-       # if the provider name is invalid or the dependencies are not met,
-       # reset $git_avatar to the empty string.
        our ($git_avatar) = gitweb_get_feature('avatar');
-       if ($git_avatar eq 'gravatar') {
-               $git_avatar = '' unless (eval { require Digest::MD5; 1; });
-       } elsif ($git_avatar eq 'picon') {
-               # no dependencies
-       } else {
-               $git_avatar = '';
-       }
+       $git_avatar = '' unless $git_avatar =~ /^(?:gravatar|picon)$/s;
 
        our @extra_branch_refs = gitweb_get_feature('extra-branch-refs');
        @extra_branch_refs = filter_and_validate_refs (@extra_branch_refs);
@@ -2167,7 +2158,7 @@ sub gravatar_url {
        my $size = shift;
        $avatar_cache{$email} ||=
                "//www.gravatar.com/avatar/" .
-                       Digest::MD5::md5_hex($email) . "?s=";
+                       md5_hex($email) . "?s=";
        return $avatar_cache{$email} . $size;
 }
 
-- 
2.15.1.424.g9478a66081

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