This behaviour is correctly documented when doing `cp --help`. There is no `--reflink=when` option.
* doc/coreutils.texi (cp invocation): Document that `--reflink` (without options) is equivalent to `--reflink=always`. --- doc/coreutils.texi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/coreutils.texi b/doc/coreutils.texi index d44101273..c3112fd0c 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -9020,7 +9020,7 @@ The @var{when} value can be one of the following: @item always If the copy-on-write operation is not supported then report the failure for each file and exit with a failure status. -Plain @option{--reflink} is equivalent to @option{--reflink=when}. +Plain @option{--reflink} is equivalent to @option{--reflink=always}. @item auto If the copy-on-write operation is not supported then fall back -- 2.37.1