+test_lei({tmpdir => "$tmpdir/rediff"}, sub {
+ lei_ok(qw(rediff -q -U9 t/solve/0001-simple-mod.patch));
+ like($lei_out, qr!^\Q+++\E b/TODO\n@@ -103,9 \+103,11 @@!sm,
+ 'got more context with -U9');
+
+ my (undef, $re) = split(/\n\n/, $lei_out, 2);
+ $re =~ s/^/> /sgm;
+ substr($re, 0, 0, <<EOM);
+From: me\@example.com
+Subject: Re: awesome advice
+
+WEB DESIGN EXPERT wrote:
+EOM
+ lei_ok([qw(rediff --full-index -U16 --drq)], undef,
+ { 0 => \$re, %$lei_opt });
+ my $exp = <<'EOM';
+From: me@example.com
+Subject: Re: awesome advice
+
+EOM
+ like($lei_out, qr/\Q$exp\E/, '--drq preserved header');
+
+ # n.b. --drq can requote the attribution line ("So-and-so wrote:"),
+ # but it's probably not worth preventing...
+
+ $exp = <<'EOM';
+> ---
+> TODO | 2 ++
+> Ω | 5 --
+> 1 file changed, 2 insertions(+)
+>
+> diff --git a/TODO b/TODO
+> index 605013e4904baabecd4a0a55997aebd8e8477a8f..69df7d565d49fbaaeb0a067910f03dc22cd52bd0 100644
+> --- a/TODO
+> +++ b/TODO
+> @@ -96,16 +96,18 @@ all need to be considered for everything we introduce)
+EOM
+ $exp =~ s/^>$/> /sgm; # re-add trailing white space
+ like($lei_out, qr/\Q$exp\E/, '--drq diffstat + context');
+
+ lei_ok(qw(rediff -q --full-index -U9 t/solve/bare.patch));
+ $exp = <<'EOM';
+diff --git a/script/public-inbox-extindex b/script/public-inbox-extindex
+old mode 100644
+new mode 100755
+index 15ac20eb871bf47697377e58a27db23102a38fca..771486c425b315bae70fd8a82d62ab0331e0a827
+--- a/script/public-inbox-extindex
++++ b/script/public-inbox-extindex
+@@ -1,13 +1,12 @@
+ #!perl -w
+EOM
+ like($lei_out, qr/\Q$exp\E/,
+ 'preserve mode, regen header + context from -U0 patch');
+ is($lei_err, '', 'no warnings from bare patch');
+ my $e = { GIT_DIR => "$ENV{HOME}/.local/share/lei/store/ALL.git" };
+ my @x = xqx([qw(git cat-file --batch-all-objects --batch-check)], $e);
+ is_deeply(\@x, [], 'no objects stored') or diag explain(\@x);
+});
+
+test_lei({tmpdir => "$tmpdir/index-eml-only"}, sub {
+ lei_ok(qw(index), $md);
+ lei_ok(qw(blob 69df7d5)); # hits LeiSearch->smsg_eml -> lms->local_blob
+});
+