From 8d33c3af0b2113091ea2c2c94990d0332c9551e7 Mon Sep 17 00:00:00 2001
From: Jonathan Tan <jonathantanmy@google.com>
Date: Mon, 16 Aug 2021 14:09:52 -0700
Subject: grep: use submodule-ODB-as-alternate lazy-addition

In the parent commit, Git was taught to add submodule ODBs as alternates
lazily, but grep does not use this because it computes the path to add
directly, not going through add_submodule_odb(). Add an equivalent to
add_submodule_odb() that takes the exact ODB path and teach grep to use
it.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Emily Shaffer <emilyshaffer@google.com>
Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 submodule.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'submodule.c')

diff --git a/submodule.c b/submodule.c
index 8fde90e906..8de1aecaeb 100644
--- a/submodule.c
+++ b/submodule.c
@@ -187,6 +187,11 @@ done:
 	return ret;
 }
 
+void add_submodule_odb_by_path(const char *path)
+{
+	string_list_insert(&added_submodule_odb_paths, xstrdup(path));
+}
+
 int register_all_submodule_odb_as_alternates(void)
 {
 	int i;
-- 
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