Git-replace needs to complete references and its own options. In
addition to the existing references completions, do also complete the
options --edit --graft --format= --list --delete.
Signed-off-by: Cornelius Weig <cornelius.weig@tngtech.com> Reviewed-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>