[ruby-talk:11445] Re: Dir#each -- include '.'?

Neil Conway <[e-mail]> wrote:
>
>On Sat, Feb 24, 2001 at 01:19:22PM +0900, David Alan Black wrote:
[...]
>Is this a bug? Dir.glob works fine for directories without
>a space in their names, but it always returns an empty array
>on directories with spaces, AFAICT. I've tried the latest CVS
>snapshot and the problem still occurs. Is this a bug with
>Ruby or am I just being stupid? ;-)

It appears that Ruby is a little closer to standard glob
semantics than documented in the Ruby book.  Though not
quite close enough for my liking.

The problem is that the glob is somewhere splitting the
argument list on a space.  Ordinarily I would just tell
you to escape it, but it seems that Ruby does not
follow traditional escaping semantics. :-(

FWIW here is my test:

bash-2.01$ ls
bash-2.01$ touch foo
bash-2.01$ touch bar
bash-2.01$ touch this\ that
bash-2.01$ ls
bar        foo        this that
bash-2.01$ ruby -e 'puts Dir.glob("foo bar")'
foo
bar
bash-2.01$ ruby -e 'puts Dir.glob("this*")'
this that
bash-2.01$ ruby -e 'puts Dir.glob("this that")'
bash-2.01$ ruby -e 'puts Dir.glob("this\ that")'
bash-2.01$ ruby -e 'puts Dir.glob("this\\ that")'
bash-2.01$ ruby -e 'puts Dir.glob("this\\\\ that")'

And if you handle this you may also get bitten on
the fact that you are skipping files which start
with a period.  But try this to list all files in
a directory:

ruby -e 'puts Dir.new(".").find_all {|f| test(?f, f)}'

Here find_all is a method mixed in from Enumerable,
and test is a method in Kernel.

Cheers,
Ben
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