Steps to reproduce

• Create directory on tmp, add 1 file inside.

  mkdir /tmp/testdir && touch /tmp/testdir/examplefile
  

• Paste below script on /tmp/completion.sh

  # BEGIN AUTOCOMPLETE
  function _foo_complete() {
  local comnum cur opts
  [[ "${COMP_WORDS[@]}" == *"-"* ]] && comnum=2 || comnum=1;
  COMPREPLY=()
  cur="${COMP_WORDS[COMP_CWORD]}"
  opts="--help --restart -h -r"
  if (( COMP_CWORD > comnum )); then
   COMPREPLY=( $(for filename in "/tmp/testdir/"*; do echo ${filename##*/}; done) )
   return
  fi
  if [[ ${cur} == -* ]]; then
   COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
   return 0
  else
   COMPREPLY=( $(for filelist in /tmp/testdir/"$2"*; do echo ${filelist##*/}; done) )
  fi
  }
  complete -F _foo_complete foo.sh
  # END AUTOCOMPLETE
  

• Source it then.

  . /tmp/completion.sh
  

Expected result

$ foo.sh --restart examplefile <tab><tab>
examplefile           
$ foo.sh --restart examplefile <tab><tab>
examplefile        
$ foo.sh --restart examplefile <tab><tab>
examplefile     
$ foo.sh --restart examplefile <tab><tab>

What happen instead

$ foo.sh --restart examplefile <tab><tab> examplefile <tab><tab> examplefile <tab><tab> examplefile <tab><tab> examplefile <tab><tab> examplefile

I want the suggestion to appear as possible completion, but without actually completing it (for display purposes). This question has been asked

CodePudding user response：

compgen -G '/home/user/testdir/*' | awk '{ gsub(/.*\//, "") } 1' | column | less -qFS

Plus proper completion setup to your myscript command.

awk could be just sed actually, but it allows you to play around with ORS.