[PATCH 1/2] index-pack: test and document --strict=<msg>

["John Cai via GitGitGadget" <gitgitgadget@gmail.com>]

From: John Cai <johncai86@gmail.com>

5d477a334a (fsck (receive-pack): allow demoting errors to warnings,
2015-06-22) allowed a list of fsck msg to downgrade to be passed to
--strict. However this is a hidden argument that was not documented nor
tested. Though true that most users would not call this option
direction, (nor use index-pack for that matter) it is still useful to
document and test this feature.

Signed-off-by: John Cai <johncai86@gmail.com>
---
 Documentation/git-index-pack.txt |  9 +++++++--
 builtin/index-pack.c             |  2 +-
 t/t5300-pack-object.sh           | 22 ++++++++++++++++++++++
 3 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/Documentation/git-index-pack.txt b/Documentation/git-index-pack.txt
index 6486620c3d8..14f806d07d1 100644
--- a/Documentation/git-index-pack.txt
+++ b/Documentation/git-index-pack.txt
@@ -79,8 +79,13 @@ OPTIONS
 	to force the version for the generated pack index, and to force
 	64-bit index entries on objects located above the given offset.
 
---strict::
-	Die, if the pack contains broken objects or links.
+--strict[=<msg-ids>]::
+	Die, if the pack contains broken objects or links. If `<msg-ids>` is passed,
+	it should be a comma-separated list of `<msg-id>=<severity>` elements where
+	`<msg-id>` and `<severity>` are used to change the severity of some possible
+	issues, eg: `--strict="missingEmail=ignore,badTagName=error"`. See the entry
+	for the `fsck.<msg-id>` configuration options in `linkgit:git-fsck[1] for
+	more information on the possible values of `<msg-id>` and `<severity>`.
 
 --progress-title::
 	For internal use only.
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 1ea87e01f29..1e53ca23775 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -24,7 +24,7 @@
 #include "setup.h"
 
 static const char index_pack_usage[] =
-"git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--[no-]rev-index] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
+"git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--[no-]rev-index] [--verify] [--strict[=<msg-ids>]] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
 
 struct object_entry {
 	struct pack_idx_entry idx;
diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh
index d402ec18b79..9563372ae27 100755
--- a/t/t5300-pack-object.sh
+++ b/t/t5300-pack-object.sh
@@ -441,6 +441,28 @@ test_expect_success 'index-pack with --strict' '
 	)
 '
 
+test_expect_success 'index-pack with --strict downgrading fsck msgs' '
+	test_when_finished rm -rf strict &&
+	git init strict &&
+	(
+		cd strict &&
+		test_commit first hello &&
+		cat >commit <<-EOF &&
+		tree $(git rev-parse HEAD^{tree})
+		parent $(git rev-parse HEAD)
+		author A U Thor
+		committer A U Thor
+
+		commit: this is a commit wit bad emails
+
+		EOF
+		git hash-object --literally -t commit -w --stdin <commit >commit_list &&
+		PACK=$(git pack-objects test <commit_list) &&
+		test_must_fail git index-pack --strict "test-$PACK.pack" &&
+		git index-pack --strict="missingEmail=ignore" "test-$PACK.pack"
+	)
+'
+
 test_expect_success 'honor pack.packSizeLimit' '
 	git config pack.packSizeLimit 3m &&
 	packname_10=$(git pack-objects test-10 <obj-list) &&
-- 
gitgitgadget