Move repository_format_partial_clone, which is currently a global
variable, into struct repository. (Full support for per-repository
partial clone config will be done in a subsequent commit - this is split
into its own commit because of the extent of the changes needed.)

The new repo-specific variable cannot be set in
check_repository_format_gently() (as is currently), because that
function does not know which repo it is operating on (or even whether
the value is important); therefore this responsibility is delegated to
the outermost caller that knows. Of all the outermost callers that know
(found by looking at all functions that call clear_repository_format()),
I looked at those that either read from the main Git directory or write
into a struct repository. These callers have been modified accordingly
(write to the_repository in the former case and write to the given
struct repository in the latter case).

Signed-off-by: Jonathan Tan <redacted>
---
 promisor-remote.c | 13 +++----------
 promisor-remote.h |  6 ------
 repository.c      |  3 +++
 repository.h      |  3 +++
 setup.c           | 16 +++++++++++-----
 5 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/promisor-remote.c b/promisor-remote.c
index da3f2ca261..d24081dc21 100644
--- a/promisor-remote.c
+++ b/promisor-remote.c

@@ -5,13 +5,6 @@
 #include "transport.h"
 #include "strvec.h"

-static char *repository_format_partial_clone;
-
-void set_repository_format_partial_clone(char *partial_clone)
-{
-       repository_format_partial_clone = xstrdup_or_null(partial_clone);
-}
-
 static int fetch_objects(const char *remote_name,
                         const struct object_id *oids,
                         int oid_nr)

@@ -145,15 +138,15 @@ static void promisor_remote_init(void)

        git_config(promisor_remote_config, NULL);

-       if (repository_format_partial_clone) {
+       if (the_repository->repository_format_partial_clone) {
                struct promisor_remote *o, *previous;

-               o = promisor_remote_lookup(repository_format_partial_clone,
+               o = promisor_remote_lookup(the_repository->repository_format_partial_clone,
                                           &previous);
                if (o)
                        promisor_remote_move_to_tail(o, previous);
                else
-                       promisor_remote_new(repository_format_partial_clone);
+                       promisor_remote_new(the_repository->repository_format_partial_clone);
        }
 }

diff --git a/promisor-remote.h b/promisor-remote.h
index c7a14063c5..687210ab87 100644
--- a/promisor-remote.h
+++ b/promisor-remote.h

@@ -32,10 +32,4 @@ int promisor_remote_get_direct(struct repository *repo,
                               const struct object_id *oids,
                               int oid_nr);

-/*
- * This should be used only once from setup.c to set the value we got
- * from the extensions.partialclone config option.
- */
-void set_repository_format_partial_clone(char *partial_clone);
-
 #endif /* PROMISOR_REMOTE_H */

diff --git a/repository.c b/repository.c
index 448cd557d4..4878c297d9 100644
--- a/repository.c
+++ b/repository.c

@@ -172,6 +172,9 @@ int repo_init(struct repository *repo,

        repo_set_hash_algo(repo, format.hash_algo);

+       repo->repository_format_partial_clone = format.partial_clone;
+       format.partial_clone = NULL;

+
        if (worktree)
                repo_set_worktree(repo, worktree);

diff --git a/repository.h b/repository.h
index a45f7520fd..6fb16ed336 100644
--- a/repository.h
+++ b/repository.h

@@ -139,6 +139,9 @@ struct repository {
        /* True if commit-graph has been disabled within this process. */
        int commit_graph_disabled;

+       /* Configurations related to promisor remotes. */
+       char *repository_format_partial_clone;
+
        /* Configurations */

        /* Indicate if a repository has a different 'commondir' from 'gitdir' */

diff --git a/setup.c b/setup.c
index 59e2facd9d..fbedfe8e03 100644
--- a/setup.c
+++ b/setup.c

@@ -468,8 +468,6 @@ static enum extension_result handle_extension_v0(const char *var,
                        data->precious_objects = git_config_bool(var, value);
                        return EXTENSION_OK;
                } else if (!strcmp(ext, "partialclone")) {
-                       if (!value)
-                               return config_error_nonbool(var);
                        data->partial_clone = xstrdup(value);
                        return EXTENSION_OK;
                } else if (!strcmp(ext, "worktreeconfig")) {

@@ -566,7 +564,6 @@ static int check_repository_format_gently(const char *gitdir, struct repository_
        }

        repository_format_precious_objects = candidate->precious_objects;
-       set_repository_format_partial_clone(candidate->partial_clone);
        repository_format_worktree_config = candidate->worktree_config;
        string_list_clear(&candidate->unknown_extensions, 0);
        string_list_clear(&candidate->v1_only_extensions, 0);

@@ -1193,6 +1190,10 @@ int discover_git_directory(struct strbuf *commondir,
                return -1;
        }

+       the_repository->repository_format_partial_clone =
+               candidate.partial_clone;
+       candidate.partial_clone = NULL;
+

        clear_repository_format(&candidate);
        return 0;
 }

@@ -1300,8 +1301,12 @@ const char *setup_git_directory_gently(int *nongit_ok)
                                gitdir = DEFAULT_GIT_DIR_ENVIRONMENT;
                        setup_git_env(gitdir);
                }
-               if (startup_info->have_repository)
+               if (startup_info->have_repository) {
                        repo_set_hash_algo(the_repository, repo_fmt.hash_algo);
+                       the_repository->repository_format_partial_clone =
+                               repo_fmt.partial_clone;
+                       repo_fmt.partial_clone = NULL;

+               }
        }
        /*
         * Since precompose_string_if_needed() needs to look at

@@ -1319,7 +1324,6 @@ const char *setup_git_directory_gently(int *nongit_ok)
                setenv(GIT_PREFIX_ENVIRONMENT, "", 1);
        }

-

        strbuf_release(&dir);
        strbuf_release(&gitdir);
        clear_repository_format(&repo_fmt);

@@ -1386,6 +1390,8 @@ void check_repository_format(struct repository_format *fmt)
        check_repository_format_gently(get_git_dir(), fmt, NULL);
        startup_info->have_repository = 1;
        repo_set_hash_algo(the_repository, fmt->hash_algo);
+       the_repository->repository_format_partial_clone =
+               xstrdup_or_null(fmt->partial_clone);
        clear_repository_format(&repo_fmt);
 }

--

2.32.0.rc1.229.g3e70b5a671-goog