Hi,
Brandon Williams wrote:
> Commit 2185fde56 (config: handle conditional include when $GIT_DIR is
> not set up) added a 'git_dir' field to the config_options struct. Let's
> use this option field explicitly all the time instead of occasionally
> falling back to calling 'git_pathdup("config")' to get the path to the
> local repository configuration. This allows 'do_git_config_sequence()'
> to not implicitly rely on global repository state.
>
> Signed-off-by: Brandon Williams <bmw...@google.com>
> ---
> builtin/config.c | 2 ++
> config.c | 6 ++----
> 2 files changed, 4 insertions(+), 4 deletions(-)
Unlike the previous 3, this one makes me pause for a moment: it means
that "gitdir:" includes and .git/config discovery would stop working
if the caller does not remember to set git_dir in their
config_options.
So we have to inspect callers.
Callers that set respect_includes = 1:
- read_early_config carefully sets git_dir *phew*
- git_config_raw doesn't and is used approximately everywhere.
do_git_config_sequence call chain:
- called by git_config_with_options, which is called by
- read_early_config
- git_config_raw
- various callers in builtin/config.c, using &config_options
> --- a/builtin/config.c
> +++ b/builtin/config.c
> @@ -539,6 +539,8 @@ int cmd_config(int argc, const char **argv, const char
> *prefix)
> config_options.respect_includes = !given_config_source.file;
> else
> config_options.respect_includes = respect_includes_opt;
> + if (have_git_dir())
> + config_options.git_dir = get_git_common_dir();
nit: because of the context, this 'if' can be "if (!nongit)".
[...]
> --- a/config.c
> +++ b/config.c
> @@ -219,8 +219,6 @@ static int include_by_gitdir(const struct config_options
> *opts,
>
> if (opts->git_dir)
> git_dir = opts->git_dir;
> - else if (have_git_dir())
> - git_dir = get_git_dir();
> else
> goto done;
I wonder if this should have a sanity-check:
else if (have_git_dir())
BUG("caller forgot to set opts->git_dir");
Alternatively, could this patch rename git_config_with_options? That
way any other patch in flight that calls git_config_with_options would
conflict with this patch, giving us an opportunity to make sure it
also sets git_dir. As another nice side benefit it would make it easy
for someone reading the patch to verify it didn't miss any callers.
> @@ -1548,8 +1546,6 @@ static int do_git_config_sequence(const struct
> config_options *opts,
>
> if (opts->git_dir)
> repo_config = mkpathdup("%s/config", opts->git_dir);
> - else if (have_git_dir())
> - repo_config = git_pathdup("config");
> else
> repo_config = NULL;
Likewise: either this should get a sanity check
else if (have_git_dir())
BUG("caller forgot to set opts->git_dir");
or the public interface git_config_with_options should be renamed.
> @@ -1613,6 +1609,8 @@ static void git_config_raw(config_fn_t fn, void *data)
> struct config_options opts = {0};
>
> opts.respect_includes = 1;
> + if (have_git_dir())
> + opts.git_dir = get_git_common_dir();
curious: Why get_git_common_dir() instead of get_git_dir()?
Thanks,
Jonathan
