bash-completion: add hardlink completion

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

bash-completion/hardlink

@@ -0,0 +1,36 @@
+_hardlink_module()
+{
+	local cur prev OPTS
+	COMPREPLY=()
+	cur="${COMP_WORDS[COMP_CWORD]}"
+	prev="${COMP_WORDS[COMP_CWORD-1]}"
+	case $prev in
+		'-x'|'--exclude')
+			COMPREPLY=( $(compgen -W "regex" -- $cur) )
+			return 0
+			;;
+		'-H'|'--help'|'-V'|'--version')
+			return 0
+			;;
+	esac
+	case $cur in
+		-*)
+		OPTS="
+			--content
+			--dry-run
+			--verbose
+			--force
+			--exclude
+			--version
+			--help
+		"
+			COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
+			return 0
+			;;
+	esac
+	local IFS=$'\n'
+	compopt -o filenames
+	COMPREPLY=( $(compgen -d -- $cur) )
+	return 0
+}
+complete -F _hardlink_module hardlink