search: support "patchid:" prefix (git patch-id --stable)

This allows easy searching via patch-id from a git commit.

Currently, abbreviations are not supported, and it seems
needless to support them since AFAIK (git) doesn't generate
nor resolve abbreviated patch-ids anywhere.

2 files changed, 14 insertions, 3 deletions

diff --git a/t/extsearch.t b/t/extsearch.t
index 09cbdabe..2d7375d6 100644
--- a/t/extsearch.t
+++ b/t/extsearch.t
@@ -314,7 +314,12 @@ if ('reindex catches missed messages') {
         is($new->{subject}, $eml->header('Subject'), 'new message added');
 
         $es->{xdb}->reopen;
-        my $mset = $es->mset("mid:$new->{mid}");
+        # git patch-id --stable <t/data/0001.patch | awk '{print $1}'
+        my $patchid = '91ee6b761fc7f47cad9f2b09b10489f313eb5b71';
+        my $mset = $es->search->mset("patchid:$patchid");
+        is($mset->size, 1, 'patchid search works');
+
+        $mset = $es->mset("mid:$new->{mid}");
         is($mset->size, 1, 'previously unseen, now indexed in Xapian');
 
         ok($im->remove($eml), 'remove new message from v2 inbox');
diff --git a/t/v2mda.t b/t/v2mda.t
index 3dfc569e..8f2f335d 100644
--- a/t/v2mda.t
+++ b/t/v2mda.t
@@ -1,7 +1,8 @@
-# Copyright (C) 2018-2021 all contributors <meta@public-inbox.org>
+#!perl -w
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+use v5.10.1;
 use strict;
-use warnings;
 use Test::More;
 use Fcntl qw(SEEK_SET);
 use Cwd;
@@ -88,6 +89,11 @@ is($eml->as_string, $mime->as_string, 'injected message');
         $pre = $ibx->search->mset_to_smsg($ibx, $pre);
         $post = $ibx->search->mset_to_smsg($ibx, $post);
         is($post->[0]->{blob}, $pre->[0]->{blob}, 'same message in both cases');
+
+        # git patch-id --stable <t/data/0001.patch | awk '{print $1}'
+        my $patchid = '91ee6b761fc7f47cad9f2b09b10489f313eb5b71';
+        my $mset = $ibx->search->mset("patchid:$patchid");
+        is($mset->size, 1, 'patchid search works');
 }
 
 done_testing();