Respect a GIT_INDEX_VERSION environment variable, when a new index is
initialized. Setting the environment variable will not cause existing
index files to be converted to another format for additional safety.
Signed-off-by: Thomas Gummerer <t.gummerer@xxxxxxxxx>
---
Documentation/git.txt | 5 +++++
read-cache.c | 9 +++++++--
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/Documentation/git.txt b/Documentation/git.txt
index 10cddb5..2b2aad5 100644
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -703,6 +703,11 @@ Git so take care if using Cogito etc.
index file. If not specified, the default of `$GIT_DIR/index`
is used.
+'GIT_INDEX_VERSION'::
+ This environment variable allows the specification of an index
+ version for new repositories. It won't affect existing index
+ files. By default index file version 3 is used.
+
'GIT_OBJECT_DIRECTORY'::
If the object storage directory is specified via this
environment variable then the sha1 directories are created
diff --git a/read-cache.c b/read-cache.c
index 46551af..04430e5 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1233,8 +1233,13 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall
void initialize_index(struct index_state *istate, int version)
{
istate->initialized = 1;
- if (!version)
- version = INDEX_FORMAT_DEFAULT;
+ if (!version) {
+ char *envversion = getenv("GIT_INDEX_VERSION");
+ if (!envversion)
+ version = INDEX_FORMAT_DEFAULT;
+ else
+ version = atoi(envversion);
+ }
istate->version = version;
set_istate_ops(istate);
}
--
1.8.4.2
--
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