jimav has asked for the wisdom of the Perl Monks concerning the following question:

bsd_glob("/tmp/NoSuchFile") returns ("/tmp/NoSuchFile") rather than empty.

As I read the docs, this behavior should occur only with the GLOB_NOCHECK or GLOB_NOMAGIC flags.

What am I missing?

Replies are listed 'Best First'.
Re: bsd_glob returns non-existent files without GLOB_NOMAGIC
by LanX (Saint) on Apr 10, 2013 at 23:13 UTC
    Your pattern has no special characters to trigger expansion, as soon as you add something like * or ? an empty list will be returned unless you activate the mentioned flags.

    see File::Glob

      DB<121> use File::Glob 'bsd_glob'

  DB<122> bsd_glob("/tmp/noexist*")

  DB<123> bsd_glob("/tmp/noexist")
 => "/tmp/noexist"

    [download]

    Cheers Rolf

    ( addicted to the Perl Programming Language)

[reply]
[d/l]
Re: bsd_glob returns non-existent files without GLOB_NOMAGIC (default)
by Anonymous Monk on Apr 10, 2013 at 23:05 UTC

    What am I missing?

    You're missing flags, so the default is used

    The default, GLOB_CSH, includes GLOB_NOCHECK

[reply]
      > The default, GLOB_CSH, includes GLOB_NOCHECK

      almost, its GLOB_NOMAGIC

      "GLOB_CSH"
           For convenience, "GLOB_CSH" is a synonym for "GLOB_BRACE |
           GLOB_NOMAGIC | GLOB_QUOTE | GLOB_TILDE | GLOB_ALPHASORT".
      ...

      "GLOB_NOMAGIC"
           Same as "GLOB_NOCHECK" but it only returns the pattern if it does
           not contain any of the special characters "*", "?" or "[".
           "NOMAGIC" is provided to simplify implementing the historic csh(1)
           globbing behaviour and should probably not be used anywhere else.

      Cheers Rolf

      ( addicted to the Perl Programming Language)

[reply]

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