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Re: Bugs in File::Find on Windows

by pKai (Priest)
on Feb 16, 2007 at 23:36 UTC ( #600547=note: print w/replies, xml ) Need Help??


in reply to Bugs in File::Find on Windows

One possibility that should work is to turn on no_chdir for File::Find... but in fact, this is broken on Windows too! It fails to recurse at all.

The following works fine for me:

use strict; use warnings; use File::Find; find( {no_chdir => 1, wanted => sub { local($\)=$/; print if -d} }, 'E +:/windows');

i. e. prints all the name (paths) of all the subdirectories below and including my E:/Windows

In fact, I never liked the idea of changing the current directory inside my programs, so I always used File::Find with no_chdir and have never experienced problems with it.

Replies are listed 'Best First'.
Re^2: Bugs in File::Find on Windows
by jdporter (Canon) on Feb 19, 2007 at 14:48 UTC

    You haven't reproduced my failure scenario, which requires that the target directory be a drive letter with no other path info. Try this:

    cd /d e:\windows cd /d c:\ find({ no_chdir => 1, wanted => sub { print if -d } }, 'E:' );

    But I've discovered more about this bug. Try this:

    cd /d c:\ mkdir test\windows\foo cd test cd /d e:\ perl -MFile::Find -e "$\=$/; find( sub { print if -d }, 'c:' );"
    Output is just as you'd expect:
    . windows foo
    But if you run
    perl -MFile::Find -e "$\=$/; find({ no_chdir => 1, wanted => sub { pri +nt if -d } }, 'c:' );"
    you get unexpected (erroneous) output:
    . . . c:/windows/$hf_mig$/KB898461/update c:/windows/$MSI31Uninstall_KB893803$ c:/windows/$MSI31Uninstall_KB893803$/spuninst c:/windows/$NtServicePackUninstall$ c:/windows/$NtServicePackUninstall$/spuninst c:/windows/$NtUninstallKB816486$ . . . c:/windows/ADDINS c:/windows/AppPatch c:/windows/assembly c:/windows/assembly/GAC_32 c:/windows/assembly/GAC_32/CustomMarshalers c:/windows/assembly/GAC_32/CustomMarshalers/2.0.0.0__b03f5f7f11d50a3a . . .

    In other words, if it finds a subdirectory of the target directory named X, it searches under C:\X, even if the target directory is not C:\. It's definitely a bug.

    A word spoken in Mind will reach its own level, in the objective world, by its own weight

      I see now.

      I took your "...broken on Windows too! It fails to recurse at all." as an absolute verdict on no_chdir, rather than as an outcome in your special situation, depending on the current directories on both drives and even the top-level directories of C:.

      Tricky stuff.

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