Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> writes:
> $ git log -- drivers/acpi/configfs.c
> -> nothing
>
> $ git log --follow -- drivers/acpi/configfs.c
> $ git log --full-history -- drivers/acpi/configfs.c
> -> works
>
> First time I've seen this fail. Expected behaviour for
> some reason, or a bug?
Expected.
In a history is branchy and mergy,
---O---o---o---o---o---M---x
\ /
o---A---o---B---o
where A, B and possibly M made changes to PATH,
$ git log X -- PATH
may show nothing if the PATH at O and M are identical. This is
described in "History Simplification" section of "git log --help"
