[Mesa-dev] [RFC] add MAINTAINERS and get_maintainer.pl script

Rob Clark robdclark at gmail.com
Tue Apr 19 21:34:25 UTC 2016


On Tue, Apr 19, 2016 at 5:11 PM, Rob Clark <robdclark at gmail.com> wrote:
> From: Rob Clark <robclark at freedesktop.org>
>
> Copied from linux kernel, with minimal changes to script (just to
> recognize mesa src tree rather than linux kernel src tree), and slimmed
> down MAINTAINER file syntax to recognize that we don't really have
> subsystem "maintainers" in the same sense as the linux kernel (ie. no
> different mailing lists and git trees per subsystem).
>
> The main point is to automate slapping on the correct CC's for patches
> via git's --cc-cmd feature, more than anything else.

oh, and I should have mentioned, but:

 git send-email --cc-cmd ./scripts/get_maintainer.pl ...

or you can use:

 git config sendemail.cccmd ./scripts/get_maintainer.pl

BR,
-R


> I didn't attempt to fully populate the MAINTAINERS file, by a long shot.
> The point was to just be able to test it, and get feedback if people
> like the idea.
>
> If you like the idea, let me know which file paths/subsystems you want
> me to add you to as designated reviewer ;-)
> ---
>  MAINTAINERS               |   49 +
>  scripts/get_maintainer.pl | 2300 +++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 2349 insertions(+)
>  create mode 100644 MAINTAINERS
>  create mode 100755 scripts/get_maintainer.pl
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> new file mode 100644
> index 0000000..52f64cb
> --- /dev/null
> +++ b/MAINTAINERS
> @@ -0,0 +1,49 @@
> +Overview:
> +
> +       This file is similar in syntax (or more precisly a subset) of what is used
> +       for the linux kernel.  Some fields do not apply (for example, in all cases,
> +       send patches to mesa-dev at lists.freedesktop.org, and in all cases the
> +       patchwork instance is https://patchwork.freedesktop.org/project/mesa/),
> +       but is meant to give an idea of who to CC on various patches, and to allow
> +       for the use of scripts/get_maintainer.pl as git --cc-cmd.
> +
> +Descriptions of section entries:
> +
> +       R: Designated reviewer: FullName <address at domain>
> +          These reviewers should be CCed on patches.
> +       F: Files and directories with wildcard patterns.
> +          A trailing slash includes all files and subdirectory files.
> +          F:   drivers/net/    all files in and below drivers/net
> +          F:   drivers/net/*   all files in drivers/net, but not below
> +          F:   */net/*         all files in "any top level directory"/net
> +          One pattern per line.  Multiple F: lines acceptable.
> +       N: Files and directories with regex patterns.
> +          N:   [^a-z]tegra     all files whose path contains the word tegra
> +          One pattern per line.  Multiple N: lines acceptable.
> +          scripts/get_maintainer.pl has different behavior for files that
> +          match F: pattern and matches of N: patterns.  By default,
> +          get_maintainer will not look at git log history when an F: pattern
> +          match occurs.  When an N: match occurs, git log history is used
> +          to also notify the people that have git commit signatures.
> +
> +Note: For the hard of thinking, this list is meant to remain in alphabetical
> +order. If you could add yourselves to it in alphabetical order that would be
> +so much easier [Ed]
> +
> +Maintainers List (try to look for most precise areas first)
> +
> +               -----------------------------------
> +
> +FREEDRENO
> +R:     Rob Clark <robclark at freedesktop.org>
> +F:     src/gallium/drivers/freedreno/
> +
> +NIR
> +R:     Jason Ekstrand <jason at jlekstrand.net>
> +R:     Connor Abbott <cwabbott0 at gmail.com>
> +F:     src/compiler/nir/
> +
> +VC4
> +R:     Eric Anholt <eric at anholt.net>
> +F:     src/gallium/drivers/vc4/
> +
> diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
> new file mode 100755
> index 0000000..6178806
> --- /dev/null
> +++ b/scripts/get_maintainer.pl
> @@ -0,0 +1,2300 @@
> +#!/usr/bin/perl -w
> +# (c) 2007, Joe Perches <joe at perches.com>
> +#           created from checkpatch.pl
> +#
> +# Print selected MAINTAINERS information for
> +# the files modified in a patch or for a file
> +#
> +# usage: perl scripts/get_maintainer.pl [OPTIONS] <patch>
> +#        perl scripts/get_maintainer.pl [OPTIONS] -f <file>
> +#
> +# Licensed under the terms of the GNU GPL License version 2
> +
> +use strict;
> +
> +my $P = $0;
> +my $V = '0.26';
> +
> +use Getopt::Long qw(:config no_auto_abbrev);
> +use Cwd;
> +
> +my $cur_path = fastgetcwd() . '/';
> +my $lk_path = "./";
> +my $email = 1;
> +my $email_usename = 1;
> +my $email_maintainer = 1;
> +my $email_reviewer = 1;
> +my $email_list = 1;
> +my $email_subscriber_list = 0;
> +my $email_git_penguin_chiefs = 0;
> +my $email_git = 0;
> +my $email_git_all_signature_types = 0;
> +my $email_git_blame = 0;
> +my $email_git_blame_signatures = 1;
> +my $email_git_fallback = 1;
> +my $email_git_min_signatures = 1;
> +my $email_git_max_maintainers = 5;
> +my $email_git_min_percent = 5;
> +my $email_git_since = "1-year-ago";
> +my $email_hg_since = "-365";
> +my $interactive = 0;
> +my $email_remove_duplicates = 1;
> +my $email_use_mailmap = 1;
> +my $output_multiline = 1;
> +my $output_separator = ", ";
> +my $output_roles = 0;
> +my $output_rolestats = 1;
> +my $output_section_maxlen = 50;
> +my $scm = 0;
> +my $web = 0;
> +my $subsystem = 0;
> +my $status = 0;
> +my $keywords = 1;
> +my $sections = 0;
> +my $file_emails = 0;
> +my $from_filename = 0;
> +my $pattern_depth = 0;
> +my $version = 0;
> +my $help = 0;
> +
> +my $vcs_used = 0;
> +
> +my $exit = 0;
> +
> +my %commit_author_hash;
> +my %commit_signer_hash;
> +
> +my @penguin_chief = ();
> +push(@penguin_chief, "Linus Torvalds:torvalds\@linux-foundation.org");
> +#Andrew wants in on most everything - 2009/01/14
> +#push(@penguin_chief, "Andrew Morton:akpm\@linux-foundation.org");
> +
> +my @penguin_chief_names = ();
> +foreach my $chief (@penguin_chief) {
> +    if ($chief =~ m/^(.*):(.*)/) {
> +       my $chief_name = $1;
> +       my $chief_addr = $2;
> +       push(@penguin_chief_names, $chief_name);
> +    }
> +}
> +my $penguin_chiefs = "\(" . join("|", @penguin_chief_names) . "\)";
> +
> +# Signature types of people who are either
> +#      a) responsible for the code in question, or
> +#      b) familiar enough with it to give relevant feedback
> +my @signature_tags = ();
> +push(@signature_tags, "Signed-off-by:");
> +push(@signature_tags, "Reviewed-by:");
> +push(@signature_tags, "Acked-by:");
> +
> +my $signature_pattern = "\(" . join("|", @signature_tags) . "\)";
> +
> +# rfc822 email address - preloaded methods go here.
> +my $rfc822_lwsp = "(?:(?:\\r\\n)?[ \\t])";
> +my $rfc822_char = '[\\000-\\377]';
> +
> +# VCS command support: class-like functions and strings
> +
> +my %VCS_cmds;
> +
> +my %VCS_cmds_git = (
> +    "execute_cmd" => \&git_execute_cmd,
> +    "available" => '(which("git") ne "") && (-e ".git")',
> +    "find_signers_cmd" =>
> +       "git log --no-color --follow --since=\$email_git_since " .
> +           '--numstat --no-merges ' .
> +           '--format="GitCommit: %H%n' .
> +                     'GitAuthor: %an <%ae>%n' .
> +                     'GitDate: %aD%n' .
> +                     'GitSubject: %s%n' .
> +                     '%b%n"' .
> +           " -- \$file",
> +    "find_commit_signers_cmd" =>
> +       "git log --no-color " .
> +           '--numstat ' .
> +           '--format="GitCommit: %H%n' .
> +                     'GitAuthor: %an <%ae>%n' .
> +                     'GitDate: %aD%n' .
> +                     'GitSubject: %s%n' .
> +                     '%b%n"' .
> +           " -1 \$commit",
> +    "find_commit_author_cmd" =>
> +       "git log --no-color " .
> +           '--numstat ' .
> +           '--format="GitCommit: %H%n' .
> +                     'GitAuthor: %an <%ae>%n' .
> +                     'GitDate: %aD%n' .
> +                     'GitSubject: %s%n"' .
> +           " -1 \$commit",
> +    "blame_range_cmd" => "git blame -l -L \$diff_start,+\$diff_length \$file",
> +    "blame_file_cmd" => "git blame -l \$file",
> +    "commit_pattern" => "^GitCommit: ([0-9a-f]{40,40})",
> +    "blame_commit_pattern" => "^([0-9a-f]+) ",
> +    "author_pattern" => "^GitAuthor: (.*)",
> +    "subject_pattern" => "^GitSubject: (.*)",
> +    "stat_pattern" => "^(\\d+)\\t(\\d+)\\t\$file\$",
> +);
> +
> +my %VCS_cmds_hg = (
> +    "execute_cmd" => \&hg_execute_cmd,
> +    "available" => '(which("hg") ne "") && (-d ".hg")',
> +    "find_signers_cmd" =>
> +       "hg log --date=\$email_hg_since " .
> +           "--template='HgCommit: {node}\\n" .
> +                       "HgAuthor: {author}\\n" .
> +                       "HgSubject: {desc}\\n'" .
> +           " -- \$file",
> +    "find_commit_signers_cmd" =>
> +       "hg log " .
> +           "--template='HgSubject: {desc}\\n'" .
> +           " -r \$commit",
> +    "find_commit_author_cmd" =>
> +       "hg log " .
> +           "--template='HgCommit: {node}\\n" .
> +                       "HgAuthor: {author}\\n" .
> +                       "HgSubject: {desc|firstline}\\n'" .
> +           " -r \$commit",
> +    "blame_range_cmd" => "",           # not supported
> +    "blame_file_cmd" => "hg blame -n \$file",
> +    "commit_pattern" => "^HgCommit: ([0-9a-f]{40,40})",
> +    "blame_commit_pattern" => "^([ 0-9a-f]+):",
> +    "author_pattern" => "^HgAuthor: (.*)",
> +    "subject_pattern" => "^HgSubject: (.*)",
> +    "stat_pattern" => "^(\\d+)\t(\\d+)\t\$file\$",
> +);
> +
> +my $conf = which_conf(".get_maintainer.conf");
> +if (-f $conf) {
> +    my @conf_args;
> +    open(my $conffile, '<', "$conf")
> +       or warn "$P: Can't find a readable .get_maintainer.conf file $!\n";
> +
> +    while (<$conffile>) {
> +       my $line = $_;
> +
> +       $line =~ s/\s*\n?$//g;
> +       $line =~ s/^\s*//g;
> +       $line =~ s/\s+/ /g;
> +
> +       next if ($line =~ m/^\s*#/);
> +       next if ($line =~ m/^\s*$/);
> +
> +       my @words = split(" ", $line);
> +       foreach my $word (@words) {
> +           last if ($word =~ m/^#/);
> +           push (@conf_args, $word);
> +       }
> +    }
> +    close($conffile);
> +    unshift(@ARGV, @conf_args) if @conf_args;
> +}
> +
> +my @ignore_emails = ();
> +my $ignore_file = which_conf(".get_maintainer.ignore");
> +if (-f $ignore_file) {
> +    open(my $ignore, '<', "$ignore_file")
> +       or warn "$P: Can't find a readable .get_maintainer.ignore file $!\n";
> +    while (<$ignore>) {
> +       my $line = $_;
> +
> +       $line =~ s/\s*\n?$//;
> +       $line =~ s/^\s*//;
> +       $line =~ s/\s+$//;
> +       $line =~ s/#.*$//;
> +
> +       next if ($line =~ m/^\s*$/);
> +       if (rfc822_valid($line)) {
> +           push(@ignore_emails, $line);
> +       }
> +    }
> +    close($ignore);
> +}
> +
> +if (!GetOptions(
> +               'email!' => \$email,
> +               'git!' => \$email_git,
> +               'git-all-signature-types!' => \$email_git_all_signature_types,
> +               'git-blame!' => \$email_git_blame,
> +               'git-blame-signatures!' => \$email_git_blame_signatures,
> +               'git-fallback!' => \$email_git_fallback,
> +               'git-chief-penguins!' => \$email_git_penguin_chiefs,
> +               'git-min-signatures=i' => \$email_git_min_signatures,
> +               'git-max-maintainers=i' => \$email_git_max_maintainers,
> +               'git-min-percent=i' => \$email_git_min_percent,
> +               'git-since=s' => \$email_git_since,
> +               'hg-since=s' => \$email_hg_since,
> +               'i|interactive!' => \$interactive,
> +               'remove-duplicates!' => \$email_remove_duplicates,
> +               'mailmap!' => \$email_use_mailmap,
> +               'm!' => \$email_maintainer,
> +               'r!' => \$email_reviewer,
> +               'n!' => \$email_usename,
> +               'l!' => \$email_list,
> +               's!' => \$email_subscriber_list,
> +               'multiline!' => \$output_multiline,
> +               'roles!' => \$output_roles,
> +               'rolestats!' => \$output_rolestats,
> +               'separator=s' => \$output_separator,
> +               'subsystem!' => \$subsystem,
> +               'status!' => \$status,
> +               'scm!' => \$scm,
> +               'web!' => \$web,
> +               'pattern-depth=i' => \$pattern_depth,
> +               'k|keywords!' => \$keywords,
> +               'sections!' => \$sections,
> +               'fe|file-emails!' => \$file_emails,
> +               'f|file' => \$from_filename,
> +               'v|version' => \$version,
> +               'h|help|usage' => \$help,
> +               )) {
> +    die "$P: invalid argument - use --help if necessary\n";
> +}
> +
> +if ($help != 0) {
> +    usage();
> +    exit 0;
> +}
> +
> +if ($version != 0) {
> +    print("${P} ${V}\n");
> +    exit 0;
> +}
> +
> +if (-t STDIN && !@ARGV) {
> +    # We're talking to a terminal, but have no command line arguments.
> +    die "$P: missing patchfile or -f file - use --help if necessary\n";
> +}
> +
> +$output_multiline = 0 if ($output_separator ne ", ");
> +$output_rolestats = 1 if ($interactive);
> +$output_roles = 1 if ($output_rolestats);
> +
> +if ($sections) {
> +    $email = 0;
> +    $email_list = 0;
> +    $scm = 0;
> +    $status = 0;
> +    $subsystem = 0;
> +    $web = 0;
> +    $keywords = 0;
> +    $interactive = 0;
> +} else {
> +    my $selections = $email + $scm + $status + $subsystem + $web;
> +    if ($selections == 0) {
> +       die "$P:  Missing required option: email, scm, status, subsystem or web\n";
> +    }
> +}
> +
> +if ($email &&
> +    ($email_maintainer + $email_reviewer +
> +     $email_list + $email_subscriber_list +
> +     $email_git + $email_git_penguin_chiefs + $email_git_blame) == 0) {
> +    die "$P: Please select at least 1 email option\n";
> +}
> +
> +if (!top_of_mesa_tree($lk_path)) {
> +    die "$P: The current directory does not appear to be "
> +       . "a mesa source tree.\n";
> +}
> +
> +## Read MAINTAINERS for type/value pairs
> +
> +my @typevalue = ();
> +my %keyword_hash;
> +
> +open (my $maint, '<', "${lk_path}MAINTAINERS")
> +    or die "$P: Can't open MAINTAINERS: $!\n";
> +while (<$maint>) {
> +    my $line = $_;
> +
> +    if ($line =~ m/^([A-Z]):\s*(.*)/) {
> +       my $type = $1;
> +       my $value = $2;
> +
> +       ##Filename pattern matching
> +       if ($type eq "F" || $type eq "X") {
> +           $value =~ s@\.@\\\. at g;       ##Convert . to \.
> +           $value =~ s/\*/\.\*/g;       ##Convert * to .*
> +           $value =~ s/\?/\./g;         ##Convert ? to .
> +           ##if pattern is a directory and it lacks a trailing slash, add one
> +           if ((-d $value)) {
> +               $value =~ s@([^/])$@$1/@;
> +           }
> +       } elsif ($type eq "K") {
> +           $keyword_hash{@typevalue} = $value;
> +       }
> +       push(@typevalue, "$type:$value");
> +    } elsif (!/^(\s)*$/) {
> +       $line =~ s/\n$//g;
> +       push(@typevalue, $line);
> +    }
> +}
> +close($maint);
> +
> +
> +#
> +# Read mail address map
> +#
> +
> +my $mailmap;
> +
> +read_mailmap();
> +
> +sub read_mailmap {
> +    $mailmap = {
> +       names => {},
> +       addresses => {}
> +    };
> +
> +    return if (!$email_use_mailmap || !(-f "${lk_path}.mailmap"));
> +
> +    open(my $mailmap_file, '<', "${lk_path}.mailmap")
> +       or warn "$P: Can't open .mailmap: $!\n";
> +
> +    while (<$mailmap_file>) {
> +       s/#.*$//; #strip comments
> +       s/^\s+|\s+$//g; #trim
> +
> +       next if (/^\s*$/); #skip empty lines
> +       #entries have one of the following formats:
> +       # name1 <mail1>
> +       # <mail1> <mail2>
> +       # name1 <mail1> <mail2>
> +       # name1 <mail1> name2 <mail2>
> +       # (see man git-shortlog)
> +
> +       if (/^([^<]+)<([^>]+)>$/) {
> +           my $real_name = $1;
> +           my $address = $2;
> +
> +           $real_name =~ s/\s+$//;
> +           ($real_name, $address) = parse_email("$real_name <$address>");
> +           $mailmap->{names}->{$address} = $real_name;
> +
> +       } elsif (/^<([^>]+)>\s*<([^>]+)>$/) {
> +           my $real_address = $1;
> +           my $wrong_address = $2;
> +
> +           $mailmap->{addresses}->{$wrong_address} = $real_address;
> +
> +       } elsif (/^(.+)<([^>]+)>\s*<([^>]+)>$/) {
> +           my $real_name = $1;
> +           my $real_address = $2;
> +           my $wrong_address = $3;
> +
> +           $real_name =~ s/\s+$//;
> +           ($real_name, $real_address) =
> +               parse_email("$real_name <$real_address>");
> +           $mailmap->{names}->{$wrong_address} = $real_name;
> +           $mailmap->{addresses}->{$wrong_address} = $real_address;
> +
> +       } elsif (/^(.+)<([^>]+)>\s*(.+)\s*<([^>]+)>$/) {
> +           my $real_name = $1;
> +           my $real_address = $2;
> +           my $wrong_name = $3;
> +           my $wrong_address = $4;
> +
> +           $real_name =~ s/\s+$//;
> +           ($real_name, $real_address) =
> +               parse_email("$real_name <$real_address>");
> +
> +           $wrong_name =~ s/\s+$//;
> +           ($wrong_name, $wrong_address) =
> +               parse_email("$wrong_name <$wrong_address>");
> +
> +           my $wrong_email = format_email($wrong_name, $wrong_address, 1);
> +           $mailmap->{names}->{$wrong_email} = $real_name;
> +           $mailmap->{addresses}->{$wrong_email} = $real_address;
> +       }
> +    }
> +    close($mailmap_file);
> +}
> +
> +## use the filenames on the command line or find the filenames in the patchfiles
> +
> +my @files = ();
> +my @range = ();
> +my @keyword_tvi = ();
> +my @file_emails = ();
> +
> +if (!@ARGV) {
> +    push(@ARGV, "&STDIN");
> +}
> +
> +foreach my $file (@ARGV) {
> +    if ($file ne "&STDIN") {
> +       ##if $file is a directory and it lacks a trailing slash, add one
> +       if ((-d $file)) {
> +           $file =~ s@([^/])$@$1/@;
> +       } elsif (!(-f $file)) {
> +           die "$P: file '${file}' not found\n";
> +       }
> +    }
> +    if ($from_filename) {
> +       $file =~ s/^\Q${cur_path}\E//;  #strip any absolute path
> +       $file =~ s/^\Q${lk_path}\E//;   #or the path to the lk tree
> +       push(@files, $file);
> +       if ($file ne "MAINTAINERS" && -f $file && ($keywords || $file_emails)) {
> +           open(my $f, '<', $file)
> +               or die "$P: Can't open $file: $!\n";
> +           my $text = do { local($/) ; <$f> };
> +           close($f);
> +           if ($keywords) {
> +               foreach my $line (keys %keyword_hash) {
> +                   if ($text =~ m/$keyword_hash{$line}/x) {
> +                       push(@keyword_tvi, $line);
> +                   }
> +               }
> +           }
> +           if ($file_emails) {
> +               my @poss_addr = $text =~ m$[A-Za-zÀ-ÿ\"\' \,\.\+-]*\s*[\,]*\s*[\(\<\{]{0,1}[A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+\.[A-Za-z0-9]+[\)\>\}]{0,1}$g;
> +               push(@file_emails, clean_file_emails(@poss_addr));
> +           }
> +       }
> +    } else {
> +       my $file_cnt = @files;
> +       my $lastfile;
> +
> +       open(my $patch, "< $file")
> +           or die "$P: Can't open $file: $!\n";
> +
> +       # We can check arbitrary information before the patch
> +       # like the commit message, mail headers, etc...
> +       # This allows us to match arbitrary keywords against any part
> +       # of a git format-patch generated file (subject tags, etc...)
> +
> +       my $patch_prefix = "";                  #Parsing the intro
> +
> +       while (<$patch>) {
> +           my $patch_line = $_;
> +           if (m/^\+\+\+\s+(\S+)/ or m/^---\s+(\S+)/) {
> +               my $filename = $1;
> +               $filename =~ s@^[^/]*/@@;
> +               $filename =~ s@\n@@;
> +               $lastfile = $filename;
> +               push(@files, $filename);
> +               $patch_prefix = "^[+-].*";      #Now parsing the actual patch
> +           } elsif (m/^\@\@ -(\d+),(\d+)/) {
> +               if ($email_git_blame) {
> +                   push(@range, "$lastfile:$1:$2");
> +               }
> +           } elsif ($keywords) {
> +               foreach my $line (keys %keyword_hash) {
> +                   if ($patch_line =~ m/${patch_prefix}$keyword_hash{$line}/x) {
> +                       push(@keyword_tvi, $line);
> +                   }
> +               }
> +           }
> +       }
> +       close($patch);
> +
> +       if ($file_cnt == @files) {
> +           warn "$P: file '${file}' doesn't appear to be a patch.  "
> +               . "Add -f to options?\n";
> +       }
> +       @files = sort_and_uniq(@files);
> +    }
> +}
> +
> + at file_emails = uniq(@file_emails);
> +
> +my %email_hash_name;
> +my %email_hash_address;
> +my @email_to = ();
> +my %hash_list_to;
> +my @list_to = ();
> +my @scm = ();
> +my @web = ();
> +my @subsystem = ();
> +my @status = ();
> +my %deduplicate_name_hash = ();
> +my %deduplicate_address_hash = ();
> +
> +my @maintainers = get_maintainers();
> +
> +if (@maintainers) {
> +    @maintainers = merge_email(@maintainers);
> +    output(@maintainers);
> +}
> +
> +if ($scm) {
> +    @scm = uniq(@scm);
> +    output(@scm);
> +}
> +
> +if ($status) {
> +    @status = uniq(@status);
> +    output(@status);
> +}
> +
> +if ($subsystem) {
> +    @subsystem = uniq(@subsystem);
> +    output(@subsystem);
> +}
> +
> +if ($web) {
> +    @web = uniq(@web);
> +    output(@web);
> +}
> +
> +exit($exit);
> +
> +sub ignore_email_address {
> +    my ($address) = @_;
> +
> +    foreach my $ignore (@ignore_emails) {
> +       return 1 if ($ignore eq $address);
> +    }
> +
> +    return 0;
> +}
> +
> +sub range_is_maintained {
> +    my ($start, $end) = @_;
> +
> +    for (my $i = $start; $i < $end; $i++) {
> +       my $line = $typevalue[$i];
> +       if ($line =~ m/^([A-Z]):\s*(.*)/) {
> +           my $type = $1;
> +           my $value = $2;
> +           if ($type eq 'S') {
> +               if ($value =~ /(maintain|support)/i) {
> +                   return 1;
> +               }
> +           }
> +       }
> +    }
> +    return 0;
> +}
> +
> +sub range_has_maintainer {
> +    my ($start, $end) = @_;
> +
> +    for (my $i = $start; $i < $end; $i++) {
> +       my $line = $typevalue[$i];
> +       if ($line =~ m/^([A-Z]):\s*(.*)/) {
> +           my $type = $1;
> +           my $value = $2;
> +           if ($type eq 'M') {
> +               return 1;
> +           }
> +       }
> +    }
> +    return 0;
> +}
> +
> +sub get_maintainers {
> +    %email_hash_name = ();
> +    %email_hash_address = ();
> +    %commit_author_hash = ();
> +    %commit_signer_hash = ();
> +    @email_to = ();
> +    %hash_list_to = ();
> +    @list_to = ();
> +    @scm = ();
> +    @web = ();
> +    @subsystem = ();
> +    @status = ();
> +    %deduplicate_name_hash = ();
> +    %deduplicate_address_hash = ();
> +    if ($email_git_all_signature_types) {
> +       $signature_pattern = "(.+?)[Bb][Yy]:";
> +    } else {
> +       $signature_pattern = "\(" . join("|", @signature_tags) . "\)";
> +    }
> +
> +    # Find responsible parties
> +
> +    my %exact_pattern_match_hash = ();
> +
> +    foreach my $file (@files) {
> +
> +       my %hash;
> +       my $tvi = find_first_section();
> +       while ($tvi < @typevalue) {
> +           my $start = find_starting_index($tvi);
> +           my $end = find_ending_index($tvi);
> +           my $exclude = 0;
> +           my $i;
> +
> +           #Do not match excluded file patterns
> +
> +           for ($i = $start; $i < $end; $i++) {
> +               my $line = $typevalue[$i];
> +               if ($line =~ m/^([A-Z]):\s*(.*)/) {
> +                   my $type = $1;
> +                   my $value = $2;
> +                   if ($type eq 'X') {
> +                       if (file_match_pattern($file, $value)) {
> +                           $exclude = 1;
> +                           last;
> +                       }
> +                   }
> +               }
> +           }
> +
> +           if (!$exclude) {
> +               for ($i = $start; $i < $end; $i++) {
> +                   my $line = $typevalue[$i];
> +                   if ($line =~ m/^([A-Z]):\s*(.*)/) {
> +                       my $type = $1;
> +                       my $value = $2;
> +                       if ($type eq 'F') {
> +                           if (file_match_pattern($file, $value)) {
> +                               my $value_pd = ($value =~ tr@/@@);
> +                               my $file_pd = ($file  =~ tr@/@@);
> +                               $value_pd++ if (substr($value,-1,1) ne "/");
> +                               $value_pd = -1 if ($value =~ /^\.\*/);
> +                               if ($value_pd >= $file_pd &&
> +                                   range_is_maintained($start, $end) &&
> +                                   range_has_maintainer($start, $end)) {
> +                                   $exact_pattern_match_hash{$file} = 1;
> +                               }
> +                               if ($pattern_depth == 0 ||
> +                                   (($file_pd - $value_pd) < $pattern_depth)) {
> +                                   $hash{$tvi} = $value_pd;
> +                               }
> +                           }
> +                       } elsif ($type eq 'N') {
> +                           if ($file =~ m/$value/x) {
> +                               $hash{$tvi} = 0;
> +                           }
> +                       }
> +                   }
> +               }
> +           }
> +           $tvi = $end + 1;
> +       }
> +
> +       foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
> +           add_categories($line);
> +           if ($sections) {
> +               my $i;
> +               my $start = find_starting_index($line);
> +               my $end = find_ending_index($line);
> +               for ($i = $start; $i < $end; $i++) {
> +                   my $line = $typevalue[$i];
> +                   if ($line =~ /^[FX]:/) {            ##Restore file patterns
> +                       $line =~ s/([^\\])\.([^\*])/$1\?$2/g;
> +                       $line =~ s/([^\\])\.$/$1\?/g;   ##Convert . back to ?
> +                       $line =~ s/\\\./\./g;           ##Convert \. to .
> +                       $line =~ s/\.\*/\*/g;           ##Convert .* to *
> +                   }
> +                   $line =~ s/^([A-Z]):/$1:\t/g;
> +                   print("$line\n");
> +               }
> +               print("\n");
> +           }
> +       }
> +    }
> +
> +    if ($keywords) {
> +       @keyword_tvi = sort_and_uniq(@keyword_tvi);
> +       foreach my $line (@keyword_tvi) {
> +           add_categories($line);
> +       }
> +    }
> +
> +    foreach my $email (@email_to, @list_to) {
> +       $email->[0] = deduplicate_email($email->[0]);
> +    }
> +
> +    foreach my $file (@files) {
> +       if ($email &&
> +           ($email_git || ($email_git_fallback &&
> +                           !$exact_pattern_match_hash{$file}))) {
> +           vcs_file_signoffs($file);
> +       }
> +       if ($email && $email_git_blame) {
> +           vcs_file_blame($file);
> +       }
> +    }
> +
> +    if ($email) {
> +       foreach my $chief (@penguin_chief) {
> +           if ($chief =~ m/^(.*):(.*)/) {
> +               my $email_address;
> +
> +               $email_address = format_email($1, $2, $email_usename);
> +               if ($email_git_penguin_chiefs) {
> +                   push(@email_to, [$email_address, 'chief penguin']);
> +               } else {
> +                   @email_to = grep($_->[0] !~ /${email_address}/, @email_to);
> +               }
> +           }
> +       }
> +
> +       foreach my $email (@file_emails) {
> +           my ($name, $address) = parse_email($email);
> +
> +           my $tmp_email = format_email($name, $address, $email_usename);
> +           push_email_address($tmp_email, '');
> +           add_role($tmp_email, 'in file');
> +       }
> +    }
> +
> +    my @to = ();
> +    if ($email || $email_list) {
> +       if ($email) {
> +           @to = (@to, @email_to);
> +       }
> +       if ($email_list) {
> +           @to = (@to, @list_to);
> +       }
> +    }
> +
> +    if ($interactive) {
> +       @to = interactive_get_maintainers(\@to);
> +    }
> +
> +    return @to;
> +}
> +
> +sub file_match_pattern {
> +    my ($file, $pattern) = @_;
> +    if (substr($pattern, -1) eq "/") {
> +       if ($file =~ m@^$pattern@) {
> +           return 1;
> +       }
> +    } else {
> +       if ($file =~ m@^$pattern@) {
> +           my $s1 = ($file =~ tr@/@@);
> +           my $s2 = ($pattern =~ tr@/@@);
> +           if ($s1 == $s2) {
> +               return 1;
> +           }
> +       }
> +    }
> +    return 0;
> +}
> +
> +sub usage {
> +    print <<EOT;
> +usage: $P [options] patchfile
> +       $P [options] -f file|directory
> +version: $V
> +
> +MAINTAINER field selection options:
> +  --email => print email address(es) if any
> +    --git => include recent git \*-by: signers
> +    --git-all-signature-types => include signers regardless of signature type
> +        or use only ${signature_pattern} signers (default: $email_git_all_signature_types)
> +    --git-fallback => use git when no exact MAINTAINERS pattern (default: $email_git_fallback)
> +    --git-chief-penguins => include ${penguin_chiefs}
> +    --git-min-signatures => number of signatures required (default: $email_git_min_signatures)
> +    --git-max-maintainers => maximum maintainers to add (default: $email_git_max_maintainers)
> +    --git-min-percent => minimum percentage of commits required (default: $email_git_min_percent)
> +    --git-blame => use git blame to find modified commits for patch or file
> +    --git-blame-signatures => when used with --git-blame, also include all commit signers
> +    --git-since => git history to use (default: $email_git_since)
> +    --hg-since => hg history to use (default: $email_hg_since)
> +    --interactive => display a menu (mostly useful if used with the --git option)
> +    --m => include maintainer(s) if any
> +    --r => include reviewer(s) if any
> +    --n => include name 'Full Name <addr\@domain.tld>'
> +    --l => include list(s) if any
> +    --s => include subscriber only list(s) if any
> +    --remove-duplicates => minimize duplicate email names/addresses
> +    --roles => show roles (status:subsystem, git-signer, list, etc...)
> +    --rolestats => show roles and statistics (commits/total_commits, %)
> +    --file-emails => add email addresses found in -f file (default: 0 (off))
> +  --scm => print SCM tree(s) if any
> +  --status => print status if any
> +  --subsystem => print subsystem name if any
> +  --web => print website(s) if any
> +
> +Output type options:
> +  --separator [, ] => separator for multiple entries on 1 line
> +    using --separator also sets --nomultiline if --separator is not [, ]
> +  --multiline => print 1 entry per line
> +
> +Other options:
> +  --pattern-depth => Number of pattern directory traversals (default: 0 (all))
> +  --keywords => scan patch for keywords (default: $keywords)
> +  --sections => print all of the subsystem sections with pattern matches
> +  --mailmap => use .mailmap file (default: $email_use_mailmap)
> +  --version => show version
> +  --help => show this help information
> +
> +Default options:
> +  [--email --nogit --git-fallback --m --r --n --l --multiline --pattern-depth=0
> +   --remove-duplicates --rolestats]
> +
> +Notes:
> +  Using "-f directory" may give unexpected results:
> +      Used with "--git", git signators for _all_ files in and below
> +          directory are examined as git recurses directories.
> +          Any specified X: (exclude) pattern matches are _not_ ignored.
> +      Used with "--nogit", directory is used as a pattern match,
> +          no individual file within the directory or subdirectory
> +          is matched.
> +      Used with "--git-blame", does not iterate all files in directory
> +  Using "--git-blame" is slow and may add old committers and authors
> +      that are no longer active maintainers to the output.
> +  Using "--roles" or "--rolestats" with git send-email --cc-cmd or any
> +      other automated tools that expect only ["name"] <email address>
> +      may not work because of additional output after <email address>.
> +  Using "--rolestats" and "--git-blame" shows the #/total=% commits,
> +      not the percentage of the entire file authored.  # of commits is
> +      not a good measure of amount of code authored.  1 major commit may
> +      contain a thousand lines, 5 trivial commits may modify a single line.
> +  If git is not installed, but mercurial (hg) is installed and an .hg
> +      repository exists, the following options apply to mercurial:
> +          --git,
> +          --git-min-signatures, --git-max-maintainers, --git-min-percent, and
> +          --git-blame
> +      Use --hg-since not --git-since to control date selection
> +  File ".get_maintainer.conf", if it exists in the linux kernel source root
> +      directory, can change whatever get_maintainer defaults are desired.
> +      Entries in this file can be any command line argument.
> +      This file is prepended to any additional command line arguments.
> +      Multiple lines and # comments are allowed.
> +  Most options have both positive and negative forms.
> +      The negative forms for --<foo> are --no<foo> and --no-<foo>.
> +
> +EOT
> +}
> +
> +sub top_of_mesa_tree {
> +    my ($lk_path) = @_;
> +
> +    if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
> +       $lk_path .= "/";
> +    }
> +    if (   (-f "${lk_path}docs/mesa.css")
> +       && (-f "${lk_path}docs/GL3.txt")
> +       && (-f "${lk_path}src/mesa/main/version.c")
> +       && (-f "${lk_path}MAINTAINERS")
> +       && (-d "${lk_path}scripts")) {
> +       return 1;
> +    }
> +    return 0;
> +}
> +
> +sub parse_email {
> +    my ($formatted_email) = @_;
> +
> +    my $name = "";
> +    my $address = "";
> +
> +    if ($formatted_email =~ /^([^<]+)<(.+\@.*)>.*$/) {
> +       $name = $1;
> +       $address = $2;
> +    } elsif ($formatted_email =~ /^\s*<(.+\@\S*)>.*$/) {
> +       $address = $1;
> +    } elsif ($formatted_email =~ /^(.+\@\S*).*$/) {
> +       $address = $1;
> +    }
> +
> +    $name =~ s/^\s+|\s+$//g;
> +    $name =~ s/^\"|\"$//g;
> +    $address =~ s/^\s+|\s+$//g;
> +
> +    if ($name =~ /[^\w \-]/i) {         ##has "must quote" chars
> +       $name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
> +       $name = "\"$name\"";
> +    }
> +
> +    return ($name, $address);
> +}
> +
> +sub format_email {
> +    my ($name, $address, $usename) = @_;
> +
> +    my $formatted_email;
> +
> +    $name =~ s/^\s+|\s+$//g;
> +    $name =~ s/^\"|\"$//g;
> +    $address =~ s/^\s+|\s+$//g;
> +
> +    if ($name =~ /[^\w \-]/i) {          ##has "must quote" chars
> +       $name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
> +       $name = "\"$name\"";
> +    }
> +
> +    if ($usename) {
> +       if ("$name" eq "") {
> +           $formatted_email = "$address";
> +       } else {
> +           $formatted_email = "$name <$address>";
> +       }
> +    } else {
> +       $formatted_email = $address;
> +    }
> +
> +    return $formatted_email;
> +}
> +
> +sub find_first_section {
> +    my $index = 0;
> +
> +    while ($index < @typevalue) {
> +       my $tv = $typevalue[$index];
> +       if (($tv =~ m/^([A-Z]):\s*(.*)/)) {
> +           last;
> +       }
> +       $index++;
> +    }
> +
> +    return $index;
> +}
> +
> +sub find_starting_index {
> +    my ($index) = @_;
> +
> +    while ($index > 0) {
> +       my $tv = $typevalue[$index];
> +       if (!($tv =~ m/^([A-Z]):\s*(.*)/)) {
> +           last;
> +       }
> +       $index--;
> +    }
> +
> +    return $index;
> +}
> +
> +sub find_ending_index {
> +    my ($index) = @_;
> +
> +    while ($index < @typevalue) {
> +       my $tv = $typevalue[$index];
> +       if (!($tv =~ m/^([A-Z]):\s*(.*)/)) {
> +           last;
> +       }
> +       $index++;
> +    }
> +
> +    return $index;
> +}
> +
> +sub get_subsystem_name {
> +    my ($index) = @_;
> +
> +    my $start = find_starting_index($index);
> +
> +    my $subsystem = $typevalue[$start];
> +    if ($output_section_maxlen && length($subsystem) > $output_section_maxlen) {
> +       $subsystem = substr($subsystem, 0, $output_section_maxlen - 3);
> +       $subsystem =~ s/\s*$//;
> +       $subsystem = $subsystem . "...";
> +    }
> +    return $subsystem;
> +}
> +
> +sub get_maintainer_role {
> +    my ($index) = @_;
> +
> +    my $i;
> +    my $start = find_starting_index($index);
> +    my $end = find_ending_index($index);
> +
> +    my $role = "unknown";
> +    my $subsystem = get_subsystem_name($index);
> +
> +    for ($i = $start + 1; $i < $end; $i++) {
> +       my $tv = $typevalue[$i];
> +       if ($tv =~ m/^([A-Z]):\s*(.*)/) {
> +           my $ptype = $1;
> +           my $pvalue = $2;
> +           if ($ptype eq "S") {
> +               $role = $pvalue;
> +           }
> +       }
> +    }
> +
> +    $role = lc($role);
> +    if      ($role eq "supported") {
> +       $role = "supporter";
> +    } elsif ($role eq "maintained") {
> +       $role = "maintainer";
> +    } elsif ($role eq "odd fixes") {
> +       $role = "odd fixer";
> +    } elsif ($role eq "orphan") {
> +       $role = "orphan minder";
> +    } elsif ($role eq "obsolete") {
> +       $role = "obsolete minder";
> +    } elsif ($role eq "buried alive in reporters") {
> +       $role = "chief penguin";
> +    }
> +
> +    return $role . ":" . $subsystem;
> +}
> +
> +sub get_list_role {
> +    my ($index) = @_;
> +
> +    my $subsystem = get_subsystem_name($index);
> +
> +    if ($subsystem eq "THE REST") {
> +       $subsystem = "";
> +    }
> +
> +    return $subsystem;
> +}
> +
> +sub add_categories {
> +    my ($index) = @_;
> +
> +    my $i;
> +    my $start = find_starting_index($index);
> +    my $end = find_ending_index($index);
> +
> +    push(@subsystem, $typevalue[$start]);
> +
> +    for ($i = $start + 1; $i < $end; $i++) {
> +       my $tv = $typevalue[$i];
> +       if ($tv =~ m/^([A-Z]):\s*(.*)/) {
> +           my $ptype = $1;
> +           my $pvalue = $2;
> +           if ($ptype eq "L") {
> +               my $list_address = $pvalue;
> +               my $list_additional = "";
> +               my $list_role = get_list_role($i);
> +
> +               if ($list_role ne "") {
> +                   $list_role = ":" . $list_role;
> +               }
> +               if ($list_address =~ m/([^\s]+)\s+(.*)$/) {
> +                   $list_address = $1;
> +                   $list_additional = $2;
> +               }
> +               if ($list_additional =~ m/subscribers-only/) {
> +                   if ($email_subscriber_list) {
> +                       if (!$hash_list_to{lc($list_address)}) {
> +                           $hash_list_to{lc($list_address)} = 1;
> +                           push(@list_to, [$list_address,
> +                                           "subscriber list${list_role}"]);
> +                       }
> +                   }
> +               } else {
> +                   if ($email_list) {
> +                       if (!$hash_list_to{lc($list_address)}) {
> +                           $hash_list_to{lc($list_address)} = 1;
> +                           if ($list_additional =~ m/moderated/) {
> +                               push(@list_to, [$list_address,
> +                                               "moderated list${list_role}"]);
> +                           } else {
> +                               push(@list_to, [$list_address,
> +                                               "open list${list_role}"]);
> +                           }
> +                       }
> +                   }
> +               }
> +           } elsif ($ptype eq "M") {
> +               my ($name, $address) = parse_email($pvalue);
> +               if ($name eq "") {
> +                   if ($i > 0) {
> +                       my $tv = $typevalue[$i - 1];
> +                       if ($tv =~ m/^([A-Z]):\s*(.*)/) {
> +                           if ($1 eq "P") {
> +                               $name = $2;
> +                               $pvalue = format_email($name, $address, $email_usename);
> +                           }
> +                       }
> +                   }
> +               }
> +               if ($email_maintainer) {
> +                   my $role = get_maintainer_role($i);
> +                   push_email_addresses($pvalue, $role);
> +               }
> +           } elsif ($ptype eq "R") {
> +               my ($name, $address) = parse_email($pvalue);
> +               if ($name eq "") {
> +                   if ($i > 0) {
> +                       my $tv = $typevalue[$i - 1];
> +                       if ($tv =~ m/^([A-Z]):\s*(.*)/) {
> +                           if ($1 eq "P") {
> +                               $name = $2;
> +                               $pvalue = format_email($name, $address, $email_usename);
> +                           }
> +                       }
> +                   }
> +               }
> +               if ($email_reviewer) {
> +                   my $subsystem = get_subsystem_name($i);
> +                   push_email_addresses($pvalue, "reviewer:$subsystem");
> +               }
> +           } elsif ($ptype eq "T") {
> +               push(@scm, $pvalue);
> +           } elsif ($ptype eq "W") {
> +               push(@web, $pvalue);
> +           } elsif ($ptype eq "S") {
> +               push(@status, $pvalue);
> +           }
> +       }
> +    }
> +}
> +
> +sub email_inuse {
> +    my ($name, $address) = @_;
> +
> +    return 1 if (($name eq "") && ($address eq ""));
> +    return 1 if (($name ne "") && exists($email_hash_name{lc($name)}));
> +    return 1 if (($address ne "") && exists($email_hash_address{lc($address)}));
> +
> +    return 0;
> +}
> +
> +sub push_email_address {
> +    my ($line, $role) = @_;
> +
> +    my ($name, $address) = parse_email($line);
> +
> +    if ($address eq "") {
> +       return 0;
> +    }
> +
> +    if (!$email_remove_duplicates) {
> +       push(@email_to, [format_email($name, $address, $email_usename), $role]);
> +    } elsif (!email_inuse($name, $address)) {
> +       push(@email_to, [format_email($name, $address, $email_usename), $role]);
> +       $email_hash_name{lc($name)}++ if ($name ne "");
> +       $email_hash_address{lc($address)}++;
> +    }
> +
> +    return 1;
> +}
> +
> +sub push_email_addresses {
> +    my ($address, $role) = @_;
> +
> +    my @address_list = ();
> +
> +    if (rfc822_valid($address)) {
> +       push_email_address($address, $role);
> +    } elsif (@address_list = rfc822_validlist($address)) {
> +       my $array_count = shift(@address_list);
> +       while (my $entry = shift(@address_list)) {
> +           push_email_address($entry, $role);
> +       }
> +    } else {
> +       if (!push_email_address($address, $role)) {
> +           warn("Invalid MAINTAINERS address: '" . $address . "'\n");
> +       }
> +    }
> +}
> +
> +sub add_role {
> +    my ($line, $role) = @_;
> +
> +    my ($name, $address) = parse_email($line);
> +    my $email = format_email($name, $address, $email_usename);
> +
> +    foreach my $entry (@email_to) {
> +       if ($email_remove_duplicates) {
> +           my ($entry_name, $entry_address) = parse_email($entry->[0]);
> +           if (($name eq $entry_name || $address eq $entry_address)
> +               && ($role eq "" || !($entry->[1] =~ m/$role/))
> +           ) {
> +               if ($entry->[1] eq "") {
> +                   $entry->[1] = "$role";
> +               } else {
> +                   $entry->[1] = "$entry->[1],$role";
> +               }
> +           }
> +       } else {
> +           if ($email eq $entry->[0]
> +               && ($role eq "" || !($entry->[1] =~ m/$role/))
> +           ) {
> +               if ($entry->[1] eq "") {
> +                   $entry->[1] = "$role";
> +               } else {
> +                   $entry->[1] = "$entry->[1],$role";
> +               }
> +           }
> +       }
> +    }
> +}
> +
> +sub which {
> +    my ($bin) = @_;
> +
> +    foreach my $path (split(/:/, $ENV{PATH})) {
> +       if (-e "$path/$bin") {
> +           return "$path/$bin";
> +       }
> +    }
> +
> +    return "";
> +}
> +
> +sub which_conf {
> +    my ($conf) = @_;
> +
> +    foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
> +       if (-e "$path/$conf") {
> +           return "$path/$conf";
> +       }
> +    }
> +
> +    return "";
> +}
> +
> +sub mailmap_email {
> +    my ($line) = @_;
> +
> +    my ($name, $address) = parse_email($line);
> +    my $email = format_email($name, $address, 1);
> +    my $real_name = $name;
> +    my $real_address = $address;
> +
> +    if (exists $mailmap->{names}->{$email} ||
> +       exists $mailmap->{addresses}->{$email}) {
> +       if (exists $mailmap->{names}->{$email}) {
> +           $real_name = $mailmap->{names}->{$email};
> +       }
> +       if (exists $mailmap->{addresses}->{$email}) {
> +           $real_address = $mailmap->{addresses}->{$email};
> +       }
> +    } else {
> +       if (exists $mailmap->{names}->{$address}) {
> +           $real_name = $mailmap->{names}->{$address};
> +       }
> +       if (exists $mailmap->{addresses}->{$address}) {
> +           $real_address = $mailmap->{addresses}->{$address};
> +       }
> +    }
> +    return format_email($real_name, $real_address, 1);
> +}
> +
> +sub mailmap {
> +    my (@addresses) = @_;
> +
> +    my @mapped_emails = ();
> +    foreach my $line (@addresses) {
> +       push(@mapped_emails, mailmap_email($line));
> +    }
> +    merge_by_realname(@mapped_emails) if ($email_use_mailmap);
> +    return @mapped_emails;
> +}
> +
> +sub merge_by_realname {
> +    my %address_map;
> +    my (@emails) = @_;
> +
> +    foreach my $email (@emails) {
> +       my ($name, $address) = parse_email($email);
> +       if (exists $address_map{$name}) {
> +           $address = $address_map{$name};
> +           $email = format_email($name, $address, 1);
> +       } else {
> +           $address_map{$name} = $address;
> +       }
> +    }
> +}
> +
> +sub git_execute_cmd {
> +    my ($cmd) = @_;
> +    my @lines = ();
> +
> +    my $output = `$cmd`;
> +    $output =~ s/^\s*//gm;
> +    @lines = split("\n", $output);
> +
> +    return @lines;
> +}
> +
> +sub hg_execute_cmd {
> +    my ($cmd) = @_;
> +    my @lines = ();
> +
> +    my $output = `$cmd`;
> +    @lines = split("\n", $output);
> +
> +    return @lines;
> +}
> +
> +sub extract_formatted_signatures {
> +    my (@signature_lines) = @_;
> +
> +    my @type = @signature_lines;
> +
> +    s/\s*(.*):.*/$1/ for (@type);
> +
> +    # cut -f2- -d":"
> +    s/\s*.*:\s*(.+)\s*/$1/ for (@signature_lines);
> +
> +## Reformat email addresses (with names) to avoid badly written signatures
> +
> +    foreach my $signer (@signature_lines) {
> +       $signer = deduplicate_email($signer);
> +    }
> +
> +    return (\@type, \@signature_lines);
> +}
> +
> +sub vcs_find_signers {
> +    my ($cmd, $file) = @_;
> +    my $commits;
> +    my @lines = ();
> +    my @signatures = ();
> +    my @authors = ();
> +    my @stats = ();
> +
> +    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
> +
> +    my $pattern = $VCS_cmds{"commit_pattern"};
> +    my $author_pattern = $VCS_cmds{"author_pattern"};
> +    my $stat_pattern = $VCS_cmds{"stat_pattern"};
> +
> +    $stat_pattern =~ s/(\$\w+)/$1/eeg;         #interpolate $stat_pattern
> +
> +    $commits = grep(/$pattern/, @lines);       # of commits
> +
> +    @authors = grep(/$author_pattern/, @lines);
> +    @signatures = grep(/^[ \t]*${signature_pattern}.*\@.*$/, @lines);
> +    @stats = grep(/$stat_pattern/, @lines);
> +
> +#    print("stats: <@stats>\n");
> +
> +    return (0, \@signatures, \@authors, \@stats) if !@signatures;
> +
> +    save_commits_by_author(@lines) if ($interactive);
> +    save_commits_by_signer(@lines) if ($interactive);
> +
> +    if (!$email_git_penguin_chiefs) {
> +       @signatures = grep(!/${penguin_chiefs}/i, @signatures);
> +    }
> +
> +    my ($author_ref, $authors_ref) = extract_formatted_signatures(@authors);
> +    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
> +
> +    return ($commits, $signers_ref, $authors_ref, \@stats);
> +}
> +
> +sub vcs_find_author {
> +    my ($cmd) = @_;
> +    my @lines = ();
> +
> +    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
> +
> +    if (!$email_git_penguin_chiefs) {
> +       @lines = grep(!/${penguin_chiefs}/i, @lines);
> +    }
> +
> +    return @lines if !@lines;
> +
> +    my @authors = ();
> +    foreach my $line (@lines) {
> +       if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
> +           my $author = $1;
> +           my ($name, $address) = parse_email($author);
> +           $author = format_email($name, $address, 1);
> +           push(@authors, $author);
> +       }
> +    }
> +
> +    save_commits_by_author(@lines) if ($interactive);
> +    save_commits_by_signer(@lines) if ($interactive);
> +
> +    return @authors;
> +}
> +
> +sub vcs_save_commits {
> +    my ($cmd) = @_;
> +    my @lines = ();
> +    my @commits = ();
> +
> +    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
> +
> +    foreach my $line (@lines) {
> +       if ($line =~ m/$VCS_cmds{"blame_commit_pattern"}/) {
> +           push(@commits, $1);
> +       }
> +    }
> +
> +    return @commits;
> +}
> +
> +sub vcs_blame {
> +    my ($file) = @_;
> +    my $cmd;
> +    my @commits = ();
> +
> +    return @commits if (!(-f $file));
> +
> +    if (@range && $VCS_cmds{"blame_range_cmd"} eq "") {
> +       my @all_commits = ();
> +
> +       $cmd = $VCS_cmds{"blame_file_cmd"};
> +       $cmd =~ s/(\$\w+)/$1/eeg;               #interpolate $cmd
> +       @all_commits = vcs_save_commits($cmd);
> +
> +       foreach my $file_range_diff (@range) {
> +           next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
> +           my $diff_file = $1;
> +           my $diff_start = $2;
> +           my $diff_length = $3;
> +           next if ("$file" ne "$diff_file");
> +           for (my $i = $diff_start; $i < $diff_start + $diff_length; $i++) {
> +               push(@commits, $all_commits[$i]);
> +           }
> +       }
> +    } elsif (@range) {
> +       foreach my $file_range_diff (@range) {
> +           next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
> +           my $diff_file = $1;
> +           my $diff_start = $2;
> +           my $diff_length = $3;
> +           next if ("$file" ne "$diff_file");
> +           $cmd = $VCS_cmds{"blame_range_cmd"};
> +           $cmd =~ s/(\$\w+)/$1/eeg;           #interpolate $cmd
> +           push(@commits, vcs_save_commits($cmd));
> +       }
> +    } else {
> +       $cmd = $VCS_cmds{"blame_file_cmd"};
> +       $cmd =~ s/(\$\w+)/$1/eeg;               #interpolate $cmd
> +       @commits = vcs_save_commits($cmd);
> +    }
> +
> +    foreach my $commit (@commits) {
> +       $commit =~ s/^\^//g;
> +    }
> +
> +    return @commits;
> +}
> +
> +my $printed_novcs = 0;
> +sub vcs_exists {
> +    %VCS_cmds = %VCS_cmds_git;
> +    return 1 if eval $VCS_cmds{"available"};
> +    %VCS_cmds = %VCS_cmds_hg;
> +    return 2 if eval $VCS_cmds{"available"};
> +    %VCS_cmds = ();
> +    if (!$printed_novcs) {
> +       warn("$P: No supported VCS found.  Add --nogit to options?\n");
> +       warn("Using a git repository produces better results.\n");
> +       warn("Try Linus Torvalds' latest git repository using:\n");
> +       warn("git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git\n");
> +       $printed_novcs = 1;
> +    }
> +    return 0;
> +}
> +
> +sub vcs_is_git {
> +    vcs_exists();
> +    return $vcs_used == 1;
> +}
> +
> +sub vcs_is_hg {
> +    return $vcs_used == 2;
> +}
> +
> +sub interactive_get_maintainers {
> +    my ($list_ref) = @_;
> +    my @list = @$list_ref;
> +
> +    vcs_exists();
> +
> +    my %selected;
> +    my %authored;
> +    my %signed;
> +    my $count = 0;
> +    my $maintained = 0;
> +    foreach my $entry (@list) {
> +       $maintained = 1 if ($entry->[1] =~ /^(maintainer|supporter)/i);
> +       $selected{$count} = 1;
> +       $authored{$count} = 0;
> +       $signed{$count} = 0;
> +       $count++;
> +    }
> +
> +    #menu loop
> +    my $done = 0;
> +    my $print_options = 0;
> +    my $redraw = 1;
> +    while (!$done) {
> +       $count = 0;
> +       if ($redraw) {
> +           printf STDERR "\n%1s %2s %-65s",
> +                         "*", "#", "email/list and role:stats";
> +           if ($email_git ||
> +               ($email_git_fallback && !$maintained) ||
> +               $email_git_blame) {
> +               print STDERR "auth sign";
> +           }
> +           print STDERR "\n";
> +           foreach my $entry (@list) {
> +               my $email = $entry->[0];
> +               my $role = $entry->[1];
> +               my $sel = "";
> +               $sel = "*" if ($selected{$count});
> +               my $commit_author = $commit_author_hash{$email};
> +               my $commit_signer = $commit_signer_hash{$email};
> +               my $authored = 0;
> +               my $signed = 0;
> +               $authored++ for (@{$commit_author});
> +               $signed++ for (@{$commit_signer});
> +               printf STDERR "%1s %2d %-65s", $sel, $count + 1, $email;
> +               printf STDERR "%4d %4d", $authored, $signed
> +                   if ($authored > 0 || $signed > 0);
> +               printf STDERR "\n     %s\n", $role;
> +               if ($authored{$count}) {
> +                   my $commit_author = $commit_author_hash{$email};
> +                   foreach my $ref (@{$commit_author}) {
> +                       print STDERR "     Author: @{$ref}[1]\n";
> +                   }
> +               }
> +               if ($signed{$count}) {
> +                   my $commit_signer = $commit_signer_hash{$email};
> +                   foreach my $ref (@{$commit_signer}) {
> +                       print STDERR "     @{$ref}[2]: @{$ref}[1]\n";
> +                   }
> +               }
> +
> +               $count++;
> +           }
> +       }
> +       my $date_ref = \$email_git_since;
> +       $date_ref = \$email_hg_since if (vcs_is_hg());
> +       if ($print_options) {
> +           $print_options = 0;
> +           if (vcs_exists()) {
> +               print STDERR <<EOT
> +
> +Version Control options:
> +g  use git history      [$email_git]
> +gf use git-fallback     [$email_git_fallback]
> +b  use git blame        [$email_git_blame]
> +bs use blame signatures [$email_git_blame_signatures]
> +c# minimum commits      [$email_git_min_signatures]
> +%# min percent          [$email_git_min_percent]
> +d# history to use       [$$date_ref]
> +x# max maintainers      [$email_git_max_maintainers]
> +t  all signature types  [$email_git_all_signature_types]
> +m  use .mailmap         [$email_use_mailmap]
> +EOT
> +           }
> +           print STDERR <<EOT
> +
> +Additional options:
> +0  toggle all
> +tm toggle maintainers
> +tg toggle git entries
> +tl toggle open list entries
> +ts toggle subscriber list entries
> +f  emails in file       [$file_emails]
> +k  keywords in file     [$keywords]
> +r  remove duplicates    [$email_remove_duplicates]
> +p# pattern match depth  [$pattern_depth]
> +EOT
> +       }
> +       print STDERR
> +"\n#(toggle), A#(author), S#(signed) *(all), ^(none), O(options), Y(approve): ";
> +
> +       my $input = <STDIN>;
> +       chomp($input);
> +
> +       $redraw = 1;
> +       my $rerun = 0;
> +       my @wish = split(/[, ]+/, $input);
> +       foreach my $nr (@wish) {
> +           $nr = lc($nr);
> +           my $sel = substr($nr, 0, 1);
> +           my $str = substr($nr, 1);
> +           my $val = 0;
> +           $val = $1 if $str =~ /^(\d+)$/;
> +
> +           if ($sel eq "y") {
> +               $interactive = 0;
> +               $done = 1;
> +               $output_rolestats = 0;
> +               $output_roles = 0;
> +               last;
> +           } elsif ($nr =~ /^\d+$/ && $nr > 0 && $nr <= $count) {
> +               $selected{$nr - 1} = !$selected{$nr - 1};
> +           } elsif ($sel eq "*" || $sel eq '^') {
> +               my $toggle = 0;
> +               $toggle = 1 if ($sel eq '*');
> +               for (my $i = 0; $i < $count; $i++) {
> +                   $selected{$i} = $toggle;
> +               }
> +           } elsif ($sel eq "0") {
> +               for (my $i = 0; $i < $count; $i++) {
> +                   $selected{$i} = !$selected{$i};
> +               }
> +           } elsif ($sel eq "t") {
> +               if (lc($str) eq "m") {
> +                   for (my $i = 0; $i < $count; $i++) {
> +                       $selected{$i} = !$selected{$i}
> +                           if ($list[$i]->[1] =~ /^(maintainer|supporter)/i);
> +                   }
> +               } elsif (lc($str) eq "g") {
> +                   for (my $i = 0; $i < $count; $i++) {
> +                       $selected{$i} = !$selected{$i}
> +                           if ($list[$i]->[1] =~ /^(author|commit|signer)/i);
> +                   }
> +               } elsif (lc($str) eq "l") {
> +                   for (my $i = 0; $i < $count; $i++) {
> +                       $selected{$i} = !$selected{$i}
> +                           if ($list[$i]->[1] =~ /^(open list)/i);
> +                   }
> +               } elsif (lc($str) eq "s") {
> +                   for (my $i = 0; $i < $count; $i++) {
> +                       $selected{$i} = !$selected{$i}
> +                           if ($list[$i]->[1] =~ /^(subscriber list)/i);
> +                   }
> +               }
> +           } elsif ($sel eq "a") {
> +               if ($val > 0 && $val <= $count) {
> +                   $authored{$val - 1} = !$authored{$val - 1};
> +               } elsif ($str eq '*' || $str eq '^') {
> +                   my $toggle = 0;
> +                   $toggle = 1 if ($str eq '*');
> +                   for (my $i = 0; $i < $count; $i++) {
> +                       $authored{$i} = $toggle;
> +                   }
> +               }
> +           } elsif ($sel eq "s") {
> +               if ($val > 0 && $val <= $count) {
> +                   $signed{$val - 1} = !$signed{$val - 1};
> +               } elsif ($str eq '*' || $str eq '^') {
> +                   my $toggle = 0;
> +                   $toggle = 1 if ($str eq '*');
> +                   for (my $i = 0; $i < $count; $i++) {
> +                       $signed{$i} = $toggle;
> +                   }
> +               }
> +           } elsif ($sel eq "o") {
> +               $print_options = 1;
> +               $redraw = 1;
> +           } elsif ($sel eq "g") {
> +               if ($str eq "f") {
> +                   bool_invert(\$email_git_fallback);
> +               } else {
> +                   bool_invert(\$email_git);
> +               }
> +               $rerun = 1;
> +           } elsif ($sel eq "b") {
> +               if ($str eq "s") {
> +                   bool_invert(\$email_git_blame_signatures);
> +               } else {
> +                   bool_invert(\$email_git_blame);
> +               }
> +               $rerun = 1;
> +           } elsif ($sel eq "c") {
> +               if ($val > 0) {
> +                   $email_git_min_signatures = $val;
> +                   $rerun = 1;
> +               }
> +           } elsif ($sel eq "x") {
> +               if ($val > 0) {
> +                   $email_git_max_maintainers = $val;
> +                   $rerun = 1;
> +               }
> +           } elsif ($sel eq "%") {
> +               if ($str ne "" && $val >= 0) {
> +                   $email_git_min_percent = $val;
> +                   $rerun = 1;
> +               }
> +           } elsif ($sel eq "d") {
> +               if (vcs_is_git()) {
> +                   $email_git_since = $str;
> +               } elsif (vcs_is_hg()) {
> +                   $email_hg_since = $str;
> +               }
> +               $rerun = 1;
> +           } elsif ($sel eq "t") {
> +               bool_invert(\$email_git_all_signature_types);
> +               $rerun = 1;
> +           } elsif ($sel eq "f") {
> +               bool_invert(\$file_emails);
> +               $rerun = 1;
> +           } elsif ($sel eq "r") {
> +               bool_invert(\$email_remove_duplicates);
> +               $rerun = 1;
> +           } elsif ($sel eq "m") {
> +               bool_invert(\$email_use_mailmap);
> +               read_mailmap();
> +               $rerun = 1;
> +           } elsif ($sel eq "k") {
> +               bool_invert(\$keywords);
> +               $rerun = 1;
> +           } elsif ($sel eq "p") {
> +               if ($str ne "" && $val >= 0) {
> +                   $pattern_depth = $val;
> +                   $rerun = 1;
> +               }
> +           } elsif ($sel eq "h" || $sel eq "?") {
> +               print STDERR <<EOT
> +
> +Interactive mode allows you to select the various maintainers, submitters,
> +commit signers and mailing lists that could be CC'd on a patch.
> +
> +Any *'d entry is selected.
> +
> +If you have git or hg installed, you can choose to summarize the commit
> +history of files in the patch.  Also, each line of the current file can
> +be matched to its commit author and that commits signers with blame.
> +
> +Various knobs exist to control the length of time for active commit
> +tracking, the maximum number of commit authors and signers to add,
> +and such.
> +
> +Enter selections at the prompt until you are satisfied that the selected
> +maintainers are appropriate.  You may enter multiple selections separated
> +by either commas or spaces.
> +
> +EOT
> +           } else {
> +               print STDERR "invalid option: '$nr'\n";
> +               $redraw = 0;
> +           }
> +       }
> +       if ($rerun) {
> +           print STDERR "git-blame can be very slow, please have patience..."
> +               if ($email_git_blame);
> +           goto &get_maintainers;
> +       }
> +    }
> +
> +    #drop not selected entries
> +    $count = 0;
> +    my @new_emailto = ();
> +    foreach my $entry (@list) {
> +       if ($selected{$count}) {
> +           push(@new_emailto, $list[$count]);
> +       }
> +       $count++;
> +    }
> +    return @new_emailto;
> +}
> +
> +sub bool_invert {
> +    my ($bool_ref) = @_;
> +
> +    if ($$bool_ref) {
> +       $$bool_ref = 0;
> +    } else {
> +       $$bool_ref = 1;
> +    }
> +}
> +
> +sub deduplicate_email {
> +    my ($email) = @_;
> +
> +    my $matched = 0;
> +    my ($name, $address) = parse_email($email);
> +    $email = format_email($name, $address, 1);
> +    $email = mailmap_email($email);
> +
> +    return $email if (!$email_remove_duplicates);
> +
> +    ($name, $address) = parse_email($email);
> +
> +    if ($name ne "" && $deduplicate_name_hash{lc($name)}) {
> +       $name = $deduplicate_name_hash{lc($name)}->[0];
> +       $address = $deduplicate_name_hash{lc($name)}->[1];
> +       $matched = 1;
> +    } elsif ($deduplicate_address_hash{lc($address)}) {
> +       $name = $deduplicate_address_hash{lc($address)}->[0];
> +       $address = $deduplicate_address_hash{lc($address)}->[1];
> +       $matched = 1;
> +    }
> +    if (!$matched) {
> +       $deduplicate_name_hash{lc($name)} = [ $name, $address ];
> +       $deduplicate_address_hash{lc($address)} = [ $name, $address ];
> +    }
> +    $email = format_email($name, $address, 1);
> +    $email = mailmap_email($email);
> +    return $email;
> +}
> +
> +sub save_commits_by_author {
> +    my (@lines) = @_;
> +
> +    my @authors = ();
> +    my @commits = ();
> +    my @subjects = ();
> +
> +    foreach my $line (@lines) {
> +       if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
> +           my $author = $1;
> +           $author = deduplicate_email($author);
> +           push(@authors, $author);
> +       }
> +       push(@commits, $1) if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
> +       push(@subjects, $1) if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
> +    }
> +
> +    for (my $i = 0; $i < @authors; $i++) {
> +       my $exists = 0;
> +       foreach my $ref(@{$commit_author_hash{$authors[$i]}}) {
> +           if (@{$ref}[0] eq $commits[$i] &&
> +               @{$ref}[1] eq $subjects[$i]) {
> +               $exists = 1;
> +               last;
> +           }
> +       }
> +       if (!$exists) {
> +           push(@{$commit_author_hash{$authors[$i]}},
> +                [ ($commits[$i], $subjects[$i]) ]);
> +       }
> +    }
> +}
> +
> +sub save_commits_by_signer {
> +    my (@lines) = @_;
> +
> +    my $commit = "";
> +    my $subject = "";
> +
> +    foreach my $line (@lines) {
> +       $commit = $1 if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
> +       $subject = $1 if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
> +       if ($line =~ /^[ \t]*${signature_pattern}.*\@.*$/) {
> +           my @signatures = ($line);
> +           my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
> +           my @types = @$types_ref;
> +           my @signers = @$signers_ref;
> +
> +           my $type = $types[0];
> +           my $signer = $signers[0];
> +
> +           $signer = deduplicate_email($signer);
> +
> +           my $exists = 0;
> +           foreach my $ref(@{$commit_signer_hash{$signer}}) {
> +               if (@{$ref}[0] eq $commit &&
> +                   @{$ref}[1] eq $subject &&
> +                   @{$ref}[2] eq $type) {
> +                   $exists = 1;
> +                   last;
> +               }
> +           }
> +           if (!$exists) {
> +               push(@{$commit_signer_hash{$signer}},
> +                    [ ($commit, $subject, $type) ]);
> +           }
> +       }
> +    }
> +}
> +
> +sub vcs_assign {
> +    my ($role, $divisor, @lines) = @_;
> +
> +    my %hash;
> +    my $count = 0;
> +
> +    return if (@lines <= 0);
> +
> +    if ($divisor <= 0) {
> +       warn("Bad divisor in " . (caller(0))[3] . ": $divisor\n");
> +       $divisor = 1;
> +    }
> +
> +    @lines = mailmap(@lines);
> +
> +    return if (@lines <= 0);
> +
> +    @lines = sort(@lines);
> +
> +    # uniq -c
> +    $hash{$_}++ for @lines;
> +
> +    # sort -rn
> +    foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
> +       my $sign_offs = $hash{$line};
> +       my $percent = $sign_offs * 100 / $divisor;
> +
> +       $percent = 100 if ($percent > 100);
> +       next if (ignore_email_address($line));
> +       $count++;
> +       last if ($sign_offs < $email_git_min_signatures ||
> +                $count > $email_git_max_maintainers ||
> +                $percent < $email_git_min_percent);
> +       push_email_address($line, '');
> +       if ($output_rolestats) {
> +           my $fmt_percent = sprintf("%.0f", $percent);
> +           add_role($line, "$role:$sign_offs/$divisor=$fmt_percent%");
> +       } else {
> +           add_role($line, $role);
> +       }
> +    }
> +}
> +
> +sub vcs_file_signoffs {
> +    my ($file) = @_;
> +
> +    my $authors_ref;
> +    my $signers_ref;
> +    my $stats_ref;
> +    my @authors = ();
> +    my @signers = ();
> +    my @stats = ();
> +    my $commits;
> +
> +    $vcs_used = vcs_exists();
> +    return if (!$vcs_used);
> +
> +    my $cmd = $VCS_cmds{"find_signers_cmd"};
> +    $cmd =~ s/(\$\w+)/$1/eeg;          # interpolate $cmd
> +
> +    ($commits, $signers_ref, $authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
> +
> +    @signers = @{$signers_ref} if defined $signers_ref;
> +    @authors = @{$authors_ref} if defined $authors_ref;
> +    @stats = @{$stats_ref} if defined $stats_ref;
> +
> +#    print("commits: <$commits>\nsigners:<@signers>\nauthors: <@authors>\nstats: <@stats>\n");
> +
> +    foreach my $signer (@signers) {
> +       $signer = deduplicate_email($signer);
> +    }
> +
> +    vcs_assign("commit_signer", $commits, @signers);
> +    vcs_assign("authored", $commits, @authors);
> +    if ($#authors == $#stats) {
> +       my $stat_pattern = $VCS_cmds{"stat_pattern"};
> +       $stat_pattern =~ s/(\$\w+)/$1/eeg;      #interpolate $stat_pattern
> +
> +       my $added = 0;
> +       my $deleted = 0;
> +       for (my $i = 0; $i <= $#stats; $i++) {
> +           if ($stats[$i] =~ /$stat_pattern/) {
> +               $added += $1;
> +               $deleted += $2;
> +           }
> +       }
> +       my @tmp_authors = uniq(@authors);
> +       foreach my $author (@tmp_authors) {
> +           $author = deduplicate_email($author);
> +       }
> +       @tmp_authors = uniq(@tmp_authors);
> +       my @list_added = ();
> +       my @list_deleted = ();
> +       foreach my $author (@tmp_authors) {
> +           my $auth_added = 0;
> +           my $auth_deleted = 0;
> +           for (my $i = 0; $i <= $#stats; $i++) {
> +               if ($author eq deduplicate_email($authors[$i]) &&
> +                   $stats[$i] =~ /$stat_pattern/) {
> +                   $auth_added += $1;
> +                   $auth_deleted += $2;
> +               }
> +           }
> +           for (my $i = 0; $i < $auth_added; $i++) {
> +               push(@list_added, $author);
> +           }
> +           for (my $i = 0; $i < $auth_deleted; $i++) {
> +               push(@list_deleted, $author);
> +           }
> +       }
> +       vcs_assign("added_lines", $added, @list_added);
> +       vcs_assign("removed_lines", $deleted, @list_deleted);
> +    }
> +}
> +
> +sub vcs_file_blame {
> +    my ($file) = @_;
> +
> +    my @signers = ();
> +    my @all_commits = ();
> +    my @commits = ();
> +    my $total_commits;
> +    my $total_lines;
> +
> +    $vcs_used = vcs_exists();
> +    return if (!$vcs_used);
> +
> +    @all_commits = vcs_blame($file);
> +    @commits = uniq(@all_commits);
> +    $total_commits = @commits;
> +    $total_lines = @all_commits;
> +
> +    if ($email_git_blame_signatures) {
> +       if (vcs_is_hg()) {
> +           my $commit_count;
> +           my $commit_authors_ref;
> +           my $commit_signers_ref;
> +           my $stats_ref;
> +           my @commit_authors = ();
> +           my @commit_signers = ();
> +           my $commit = join(" -r ", @commits);
> +           my $cmd;
> +
> +           $cmd = $VCS_cmds{"find_commit_signers_cmd"};
> +           $cmd =~ s/(\$\w+)/$1/eeg;   #substitute variables in $cmd
> +
> +           ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
> +           @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
> +           @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
> +
> +           push(@signers, @commit_signers);
> +       } else {
> +           foreach my $commit (@commits) {
> +               my $commit_count;
> +               my $commit_authors_ref;
> +               my $commit_signers_ref;
> +               my $stats_ref;
> +               my @commit_authors = ();
> +               my @commit_signers = ();
> +               my $cmd;
> +
> +               $cmd = $VCS_cmds{"find_commit_signers_cmd"};
> +               $cmd =~ s/(\$\w+)/$1/eeg;       #substitute variables in $cmd
> +
> +               ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, $file);
> +               @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
> +               @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
> +
> +               push(@signers, @commit_signers);
> +           }
> +       }
> +    }
> +
> +    if ($from_filename) {
> +       if ($output_rolestats) {
> +           my @blame_signers;
> +           if (vcs_is_hg()) {{         # Double brace for last exit
> +               my $commit_count;
> +               my @commit_signers = ();
> +               @commits = uniq(@commits);
> +               @commits = sort(@commits);
> +               my $commit = join(" -r ", @commits);
> +               my $cmd;
> +
> +               $cmd = $VCS_cmds{"find_commit_author_cmd"};
> +               $cmd =~ s/(\$\w+)/$1/eeg;       #substitute variables in $cmd
> +
> +               my @lines = ();
> +
> +               @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
> +
> +               if (!$email_git_penguin_chiefs) {
> +                   @lines = grep(!/${penguin_chiefs}/i, @lines);
> +               }
> +
> +               last if !@lines;
> +
> +               my @authors = ();
> +               foreach my $line (@lines) {
> +                   if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
> +                       my $author = $1;
> +                       $author = deduplicate_email($author);
> +                       push(@authors, $author);
> +                   }
> +               }
> +
> +               save_commits_by_author(@lines) if ($interactive);
> +               save_commits_by_signer(@lines) if ($interactive);
> +
> +               push(@signers, @authors);
> +           }}
> +           else {
> +               foreach my $commit (@commits) {
> +                   my $i;
> +                   my $cmd = $VCS_cmds{"find_commit_author_cmd"};
> +                   $cmd =~ s/(\$\w+)/$1/eeg;   #interpolate $cmd
> +                   my @author = vcs_find_author($cmd);
> +                   next if !@author;
> +
> +                   my $formatted_author = deduplicate_email($author[0]);
> +
> +                   my $count = grep(/$commit/, @all_commits);
> +                   for ($i = 0; $i < $count ; $i++) {
> +                       push(@blame_signers, $formatted_author);
> +                   }
> +               }
> +           }
> +           if (@blame_signers) {
> +               vcs_assign("authored lines", $total_lines, @blame_signers);
> +           }
> +       }
> +       foreach my $signer (@signers) {
> +           $signer = deduplicate_email($signer);
> +       }
> +       vcs_assign("commits", $total_commits, @signers);
> +    } else {
> +       foreach my $signer (@signers) {
> +           $signer = deduplicate_email($signer);
> +       }
> +       vcs_assign("modified commits", $total_commits, @signers);
> +    }
> +}
> +
> +sub uniq {
> +    my (@parms) = @_;
> +
> +    my %saw;
> +    @parms = grep(!$saw{$_}++, @parms);
> +    return @parms;
> +}
> +
> +sub sort_and_uniq {
> +    my (@parms) = @_;
> +
> +    my %saw;
> +    @parms = sort @parms;
> +    @parms = grep(!$saw{$_}++, @parms);
> +    return @parms;
> +}
> +
> +sub clean_file_emails {
> +    my (@file_emails) = @_;
> +    my @fmt_emails = ();
> +
> +    foreach my $email (@file_emails) {
> +       $email =~ s/[\(\<\{]{0,1}([A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+)[\)\>\}]{0,1}/\<$1\>/g;
> +       my ($name, $address) = parse_email($email);
> +       if ($name eq '"[,\.]"') {
> +           $name = "";
> +       }
> +
> +       my @nw = split(/[^A-Za-zÀ-ÿ\'\,\.\+-]/, $name);
> +       if (@nw > 2) {
> +           my $first = $nw[@nw - 3];
> +           my $middle = $nw[@nw - 2];
> +           my $last = $nw[@nw - 1];
> +
> +           if (((length($first) == 1 && $first =~ m/[A-Za-z]/) ||
> +                (length($first) == 2 && substr($first, -1) eq ".")) ||
> +               (length($middle) == 1 ||
> +                (length($middle) == 2 && substr($middle, -1) eq "."))) {
> +               $name = "$first $middle $last";
> +           } else {
> +               $name = "$middle $last";
> +           }
> +       }
> +
> +       if (substr($name, -1) =~ /[,\.]/) {
> +           $name = substr($name, 0, length($name) - 1);
> +       } elsif (substr($name, -2) =~ /[,\.]"/) {
> +           $name = substr($name, 0, length($name) - 2) . '"';
> +       }
> +
> +       if (substr($name, 0, 1) =~ /[,\.]/) {
> +           $name = substr($name, 1, length($name) - 1);
> +       } elsif (substr($name, 0, 2) =~ /"[,\.]/) {
> +           $name = '"' . substr($name, 2, length($name) - 2);
> +       }
> +
> +       my $fmt_email = format_email($name, $address, $email_usename);
> +       push(@fmt_emails, $fmt_email);
> +    }
> +    return @fmt_emails;
> +}
> +
> +sub merge_email {
> +    my @lines;
> +    my %saw;
> +
> +    for (@_) {
> +       my ($address, $role) = @$_;
> +       if (!$saw{$address}) {
> +           if ($output_roles) {
> +               push(@lines, "$address ($role)");
> +           } else {
> +               push(@lines, $address);
> +           }
> +           $saw{$address} = 1;
> +       }
> +    }
> +
> +    return @lines;
> +}
> +
> +sub output {
> +    my (@parms) = @_;
> +
> +    if ($output_multiline) {
> +       foreach my $line (@parms) {
> +           print("${line}\n");
> +       }
> +    } else {
> +       print(join($output_separator, @parms));
> +       print("\n");
> +    }
> +}
> +
> +my $rfc822re;
> +
> +sub make_rfc822re {
> +#   Basic lexical tokens are specials, domain_literal, quoted_string, atom, and
> +#   comment.  We must allow for rfc822_lwsp (or comments) after each of these.
> +#   This regexp will only work on addresses which have had comments stripped
> +#   and replaced with rfc822_lwsp.
> +
> +    my $specials = '()<>@,;:\\\\".\\[\\]';
> +    my $controls = '\\000-\\037\\177';
> +
> +    my $dtext = "[^\\[\\]\\r\\\\]";
> +    my $domain_literal = "\\[(?:$dtext|\\\\.)*\\]$rfc822_lwsp*";
> +
> +    my $quoted_string = "\"(?:[^\\\"\\r\\\\]|\\\\.|$rfc822_lwsp)*\"$rfc822_lwsp*";
> +
> +#   Use zero-width assertion to spot the limit of an atom.  A simple
> +#   $rfc822_lwsp* causes the regexp engine to hang occasionally.
> +    my $atom = "[^$specials $controls]+(?:$rfc822_lwsp+|\\Z|(?=[\\[\"$specials]))";
> +    my $word = "(?:$atom|$quoted_string)";
> +    my $localpart = "$word(?:\\.$rfc822_lwsp*$word)*";
> +
> +    my $sub_domain = "(?:$atom|$domain_literal)";
> +    my $domain = "$sub_domain(?:\\.$rfc822_lwsp*$sub_domain)*";
> +
> +    my $addr_spec = "$localpart\@$rfc822_lwsp*$domain";
> +
> +    my $phrase = "$word*";
> +    my $route = "(?:\@$domain(?:,\@$rfc822_lwsp*$domain)*:$rfc822_lwsp*)";
> +    my $route_addr = "\\<$rfc822_lwsp*$route?$addr_spec\\>$rfc822_lwsp*";
> +    my $mailbox = "(?:$addr_spec|$phrase$route_addr)";
> +
> +    my $group = "$phrase:$rfc822_lwsp*(?:$mailbox(?:,\\s*$mailbox)*)?;\\s*";
> +    my $address = "(?:$mailbox|$group)";
> +
> +    return "$rfc822_lwsp*$address";
> +}
> +
> +sub rfc822_strip_comments {
> +    my $s = shift;
> +#   Recursively remove comments, and replace with a single space.  The simpler
> +#   regexps in the Email Addressing FAQ are imperfect - they will miss escaped
> +#   chars in atoms, for example.
> +
> +    while ($s =~ s/^((?:[^"\\]|\\.)*
> +                    (?:"(?:[^"\\]|\\.)*"(?:[^"\\]|\\.)*)*)
> +                    \((?:[^()\\]|\\.)*\)/$1 /osx) {}
> +    return $s;
> +}
> +
> +#   valid: returns true if the parameter is an RFC822 valid address
> +#
> +sub rfc822_valid {
> +    my $s = rfc822_strip_comments(shift);
> +
> +    if (!$rfc822re) {
> +        $rfc822re = make_rfc822re();
> +    }
> +
> +    return $s =~ m/^$rfc822re$/so && $s =~ m/^$rfc822_char*$/;
> +}
> +
> +#   validlist: In scalar context, returns true if the parameter is an RFC822
> +#              valid list of addresses.
> +#
> +#              In list context, returns an empty list on failure (an invalid
> +#              address was found); otherwise a list whose first element is the
> +#              number of addresses found and whose remaining elements are the
> +#              addresses.  This is needed to disambiguate failure (invalid)
> +#              from success with no addresses found, because an empty string is
> +#              a valid list.
> +
> +sub rfc822_validlist {
> +    my $s = rfc822_strip_comments(shift);
> +
> +    if (!$rfc822re) {
> +        $rfc822re = make_rfc822re();
> +    }
> +    # * null list items are valid according to the RFC
> +    # * the '1' business is to aid in distinguishing failure from no results
> +
> +    my @r;
> +    if ($s =~ m/^(?:$rfc822re)?(?:,(?:$rfc822re)?)*$/so &&
> +       $s =~ m/^$rfc822_char*$/) {
> +        while ($s =~ m/(?:^|,$rfc822_lwsp*)($rfc822re)/gos) {
> +            push(@r, $1);
> +        }
> +        return wantarray ? (scalar(@r), @r) : 1;
> +    }
> +    return wantarray ? () : 0;
> +}
> --
> 2.5.5
>


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