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commit-graph: add repo arg to graph readers

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Add a struct repository argument to the functions in commit-graph.h that
read the commit graph. (This commit does not affect functions that write
commit graphs.)

Because the commit graph functions can now read the commit graph of any
repository, the global variable core_commit_graph has been removed.
Instead, the config option core.commitGraph is now read on the first
time in a repository that a commit is attempted to be parsed using its
commit graph.

This commit includes a test that exercises the functionality on an
arbitrary repository that is not the_repository.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Tan
2018-07-11 15:42:42 -07:00
committed by Junio C Hamano
parent 8527750626
commit dade47c06c
13 changed files with 162 additions and 42 deletions
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t/helper/test-tool.h
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@ -23,6 +23,7 @@ int cmd__prio_queue(int argc, const char **argv);
int cmd__read_cache(int argc, const char **argv);
int cmd__ref_store(int argc, const char **argv);
int cmd__regex(int argc, const char **argv);
int cmd__repository(int argc, const char **argv);
int cmd__revision_walking(int argc, const char **argv);
int cmd__run_command(int argc, const char **argv);
int cmd__scrap_cache_tree(int argc, const char **argv);