Subject: Re: [PATCH v2] commit-graph: disable GIT_COMMIT_GRAPH_PARANOIA by default

From: Junio C Hamano <[email-masked]>
Date: Thu, 23 Nov 2023 20:44:33 +0900

Patrick Steinhardt <[email-masked]> writes:

> Note that this requires us to amend some tests to manually turn on the
> paranoid checks again. This is because we cause repository corruption by
> manually deleting objects which are part of the commit graph already.
> These circumstances shouldn't usually happen in repositories.
> ...
> diff --git a/t/t6022-rev-list-missing.sh b/t/t6022-rev-list-missing.sh
> index 40265a4f66..1ca4eb5a36 100755
> --- a/t/t6022-rev-list-missing.sh
> +++ b/t/t6022-rev-list-missing.sh
> @@ -13,6 +13,11 @@ test_expect_success 'create repository and alternate directory' '
>  	test_commit 3
>  '
>  
> +# We manually corrupt the repository, which means that the commit-graph may
> +# contain references to already-deleted objects. We thus need to enable
> +# commit-graph paranoia to not returned these deleted commits from the graph.
> +export GIT_COMMIT_GRAPH_PARANOIA=true

test-lint-shell-syntax is a bit overly strict and complains against
this line, so until it is loosened, I'd suggest to do

	GIT_COMMIT_GRAPH_PARANOIA=true
	export GIT_COMMIT_GRAPH_PARANOIA

instead here.