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read-cache.c: make $GIT_TEST_SPLIT_INDEX boolean

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While at there, document about this special mode when running the test
suite.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2018-04-14 17:34:59 +02:00
committed by Junio C Hamano
parent fe0a9eaf31
commit 4c2db93807
3 changed files with 14 additions and 3 deletions
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read-cache.c
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@ -2268,7 +2268,7 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
if (!istate->version) {
istate->version = get_index_format_default();
if (getenv("GIT_TEST_SPLIT_INDEX"))
if (git_env_bool("GIT_TEST_SPLIT_INDEX", 0))
init_split_index(istate);
}
@ -2559,7 +2559,7 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock,
goto out;
}
if (getenv("GIT_TEST_SPLIT_INDEX")) {
if (git_env_bool("GIT_TEST_SPLIT_INDEX", 0)) {
int v = si->base_sha1[0];
if ((v & 15) < 6)
istate->cache_changed |= SPLIT_INDEX_ORDERED;