xchang-bash-completion

#!/bin/bash

function __xchang() {
  local cmd_dir
  local comp_word
  local cword
  local -a completions

  local chang_dir=~/app/chang/sources

  cword=${COMP_WORDS[COMP_CWORD]}

  COMPREPLY=()
  if [[ $COMP_CWORD -eq 1 ]]; then
    completions=($(find ${chang_dir} -iname '*.sh' -type f))
    completions=(${completions[*]#$chang_dir/chang_})
    completions=(${completions[*]%%.sh})
    for comp_word in "${completions[@]}"; do
      if [[ $comp_word =~ ^$cword ]]; then
        COMPREPLY=("${COMPREPLY[@]}" $comp_word)
      fi
    done
  fi
}

complete -F __xchang xchang