@@ -3090,6 +3090,26 @@ __gitcomp_directories ()
# No possible further completions any deeper, so assume we're at
# a leaf directory and just consider it complete
__gitcomp_direct_append "$cur "
+ elif [[ $_found == 0 ]]; then
+ # No possible completions found. Avoid falling back to
+ # bash's default file and directory completion, because all
+ # valid completions have already been searched and the
+ # fallbacks can do nothing but mislead. In fact, they can
+ # mislead in three different ways:
+ # 1) Fallback file completion makes no sense when asking
+ # for directory completions, as this function does.
+ # 2) Fallback directory completion is bad because
+ # e.g. "/pro" is invalid and should NOT complete to
+ # "/proc".
+ # 3) Fallback file/directory completion only completes
+ # on paths that exist in the current working tree,
+ # i.e. which are *already* part of their
+ # sparse-checkout. Thus, normal file and directory
+ # completion is always useless for "git
+ # sparse-checkout add" and is also probelmatic for
+ # "git sparse-checkout set" unless using it to
+ # strictly narrow the checkout.
+ COMPREPLY=( "" )
fi
}