Re: [Help-bash] Behavior of 'complete -o filenames' unclear

[Michael Siegel]

Am 10.10.18 um 17:36 schrieb Chet Ramey:
> 
> If you want to prevent readline from quoting filenames that appear in
> the current directory by removing `-o filenames', you can use one of
> the shell facilities that quotes arguments to add the quotes back: printf's
> `%q' format or the new-in-bash-4.4 @Q parameter expansion
> 
>> Apropos putting file names into COMPREPLY: After some further discussion
>> in #bash on Freenode, I have now sanitized the way this is done:
>>
>>   while IFS=$'\n' read -r line
>>   do
>>     COMPREPLY+=("$line")
>>   done < <(compgen -f -- "$dbm_dir/${COMP_WORDS[COMP_CWORD]}" | \
>>   cut -d '/' -f 5)
> 
> You could avoid the pipe by using something like
> "address@hidden/}" to remove the leading directory name.

Following both of your suggestions, I've now created a version that
should be good to go. I've had it tested by shellcheck, which didn't
find any reason to complain.

Here's the script:

_dbm_complete_bash() {

  local dbm_dir="$HOME/.config/dbm"

  # Only perform bookmark name completion on the first argument to dbm,
  # except when that first argument is -d (the delete switch). In that
  # case, perform bookmark name completion on any given argument.
  if [ "address@hidden" -lt 3 ] || [ "${COMP_WORDS[1]}" = '-d' ]
  then
    # Put the names of all files found in $dbm_dir into the COMPREPLY
    # array and omit their directory prefix.
    # Use IFS=$'\n' for read, as compgen cannot generate null-delimited
    # output.
    # Use printf '%q' to have shell special characters escaped properly.
    while IFS=$'\n' read -r line
    do
      COMPREPLY+=("$(printf '%q' "${line#"$dbm_dir/"}")")
    done < <(compgen -f -- "$dbm_dir/${COMP_WORDS[COMP_CWORD]}")
  fi
}

complete -F _dbm_complete_bash dbm