Specified as driver.initialize, this is an optional callback invoked
before a merge driver is first used. It will be called once at most
per library lifetime.
If non-null, the merge driver's initialize callback will be invoked
right before the first use of the driver, so you can defer expensive
initialization operations (in case libgit2 is being used in a way that
doesn't need the merge driver).
Initialize callback on merge driver
Specified as driver.initialize, this is an optional callback invoked before a merge driver is first used. It will be called once at most per library lifetime.
If non-null, the merge driver's initialize callback will be invoked right before the first use of the driver, so you can defer expensive initialization operations (in case libgit2 is being used in a way that doesn't need the merge driver).