Re: Filename completion broken on single quote

[lolilolicon]

On Sat, Oct 15, 2011 at 1:30 AM, Chet Ramey <chet.ramey@case.edu> wrote:
> On 10/13/11 10:37 AM, lolilolicon wrote:
>> Inside an empty directory:
>>
>>   touch 1 1\'1
>>   complete -r ls
>>   ls 1\'<TAB>       # ls 1\'1
>>   complete -f ls
>>   ls 1\'<TAB>       # ls 1
>>   ls 1\\\'<TAB>     # ls 1\'1
>>
>> (Note: the comment on the right is the result after pressing <TAB>)
>>
>> Is this broken behavior?
>> Why on earth does the user have to double-escape at all?
>> Is there any benefit of this?
>
> Thanks for the report.  This looks like a problem, or an omission, with
> the effects of the `-f' option to complete, since it works as expected
> without using programmable completion or when using `-o default'.  I
> will take a look.
>

OK, some more strange test results.

In the interactive bash shell, I did this (in an empty directory):

  $ mkdir 1\'1          $ mkdir 2@2
  $ touch 1\'1/one      $ touch 2@2/two
  $ compgen -f "1'1"    $ compgen -f "2@2"
  1'1                   2@2
  $ compgen -f "1\'1"   $ compgen -f "2\@2"
  $ compgen -f "1'1/"   $ compgen -f "2@2/"
                        2@2/two
  $ compgen -f "1\'1/"  $ compgen -f "2\@2/"
  1\'1/one              2\@2/two

(Note: Put side by side for comparision.)

A bit inconsistency here. Then I wrote a bash script to do the same thing,

  #!/bin/bash

  shopt -s progcomp

  mkdir -p 1\'1 2@2
  touch 1\'1/one 2@2/two

  for i in \
    "1'1" "1\'1" "1'1/" "1\'1/" \
    "2@2" "2\@2" "2@2/" "2\@2/"; do
    printf -- '%5s => %s\n' "$i" "$(compgen -f "$i")"
  done
  # (Same results using `compgen -o default')

yet with different results:

    1'1 => 1'1
   1\'1 =>
   1'1/ => 1'1/one
  1\'1/ =>
    2@2 => 2@2
   2\@2 =>
   2@2/ => 2@2/two
  2\@2/ =>

What's going on with all this inconsistency?

Also, dumb question, but is `compgen' supposed to accept quoted arguments or
dequoted ones? e.g., "1\'1/" or "1'1/"?

Thanks

> Chet
> --
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>                 ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/
>