Better bash autocompletion for directory options

Bash autocomplete adds trailing slash for directories and handle
correctly directories named with spaces.

Signed-off-by: Pedro Rabello Sato <[email protected]>

Author: Kamorst

completions/bash/distrobox

@@ -19,7 +19,8 @@ _generate_from_help() {
 	fileopts="--file"
 
 	if [[ ${prev} =~ ${diropts} ]]; then
-		COMPREPLY=($(compgen -d -- ${cur}))
+		COMPREPLY=($(IFS=$'\n'; realpath $(compgen -d -- ${cur}) 2>/dev/null))
+		compopt -o filenames
 		return 0
 	fi