From ca71d9487d8ea344e898a921babcb3ba6c885abc Mon Sep 17 00:00:00 2001
From: "C. McEnroe" <june@causal.agency>
Date: Wed, 8 Sep 2021 14:15:56 -0400
Subject: Add initial working version of git-comment

---
 bin/git-comment.pl | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 bin/git-comment.pl

diff --git a/bin/git-comment.pl b/bin/git-comment.pl
new file mode 100644
index 00000000..53a0c1d5
--- /dev/null
+++ b/bin/git-comment.pl
@@ -0,0 +1,54 @@
+#!/usr/bin/env perl
+
+# FIXME?
+use lib (split(/:/, $ENV{GITPERLLIB} || '/opt/local/share/perl5'));
+
+use strict;
+use warnings;
+use Getopt::Long qw(:config pass_through);
+use Git;
+
+my $repo = Git->repository();
+
+my $comment_start = $repo->config('comment.start') // "/*";
+my $comment_lead = $repo->config('comment.lead') // " *";
+my $comment_end = $repo->config('comment.end') // " */";
+GetOptions(
+	'comment-start=s' => \$comment_start,
+	'comment-lead=s' => \$comment_lead,
+	'comment-end:s' => \$comment_end,
+) or die;
+
+my ($pipe, $ctx) = $repo->command_output_pipe('blame', '--porcelain', @ARGV);
+
+my ($commit, %abbrev, %summary, %body, %printed);
+while (<$pipe>) {
+	chomp;
+	if (/^([[:xdigit:]]+) \d+ \d+ \d+/) {
+		$commit = $1;
+		next if $abbrev{$commit};
+		my @body = $repo->command(
+			'show', '--no-patch', '--pretty=format:%h%n%b', $commit
+		);
+		$abbrev{$commit} = shift @body;
+		$body{$commit} = \@body;
+	} elsif (/^summary (.*)/) {
+		$summary{$commit} = $1;
+	} elsif (/^\t(\s*)(.*)/) {
+		my ($indent, $line) = ($1, $2);
+		if (@{$body{$commit}} && !$printed{$commit}) {
+			print "$indent$comment_start $abbrev{$commit} $summary{$commit}\n";
+			print "$indent$comment_lead\n";
+			foreach (@{$body{$commit}}) {
+				print "$indent$comment_lead";
+				print " $_" if $_;
+				print "\n";
+			}
+			print "$indent$comment_end\n" if $comment_end;
+			$printed{$commit} = 1;
+		}
+		print "$indent$line\n";
+	}
+}
+
+$repo->command_close_pipe($pipe, $ctx);
-- 
cgit 1.4.1