Re^5: Edge case in Text::Glob

Quoth perldoc -f glob

This operator is implemented using the standard "File::Glob" extension. See File::Glob for details, including "bsd_glob", which does not treat whitespace as a pattern separator.

Edit: point taken though; not sure what the other modules sit on top of if not the core glob.

Additionally: I'm not extremely surprised if other implementations mirror the details of the builtin glob as far as their behaviors go.

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The cake is a lie.
The cake is a lie.

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Re^6: Edge case in Text::Glob by LanX (Saint) on Mar 02, 2022 at 18:06 UTC
> Additionally: I'm not extremely surprised if other implementations mirror the details of the builtin glob as far as their behaviors go. Tho I don't even know how to generate a test-suite for that. It's mind-blowing alterations can be nested "nested" character classes do not exist but what are the exact escaping rules then? how do you test globing on filenames which a particular file-system doesn't allow ° escaping of "glob-metas" must be reflected on "re-metas" and vice versa how do you test that no unintened re-meta was injected, without being escaped? I just noticed that Text::Glob translates `{x,y}` to `(x\|y)` which means you get capture groups as a side effect. There is more for sure ... Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery} °) a quick test on Windows `DB<152> open my $fh ,">", "$_" or say "ERROR:'$_' $!" for qw/~ [ ] + { } * ?/ ERROR:'*' Invalid argument ERROR:'?' Invalid argument DB<153> x <?> 0 '[' 1 ']' 2 '{' 3 '}' 4 '~' DB<154>` [download] see also this SO answer: what-characters-are-forbidden-in-windows-and-linux-directory-names	[reply] [d/l] [select]

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Re^6: Edge case in Text::Glob
by LanX (Saint) on Mar 02, 2022 at 18:06 UTC

> Additionally: I'm not extremely surprised if other implementations mirror the details of the builtin glob as far as their behaviors go.

Tho I don't even know how to generate a test-suite for that.

It's mind-blowing

alterations can be nested
"nested" character classes do not exist but what are the exact escaping rules then?
how do you test globing on filenames which a particular file-system doesn't allow °
escaping of "glob-metas" must be reflected on "re-metas" and vice versa
how do you test that no unintened re-meta was injected, without being escaped?
I just noticed that Text::Glob translates {x,y} to (x|y) which means you get capture groups as a side effect.

There is more for sure ...

Cheers Rolf
_{(addicted to the Perl Programming Language :)

Wikisyntax for the Monastery}

°) a quick test on Windows

  DB<152>  open my $fh ,">", "$_" or say "ERROR:'$_' $!"  for qw/~ [ ]
+ { } * ?/
ERROR:'*' Invalid argument
ERROR:'?' Invalid argument

  DB<153> x <?>
0  '['
1  ']'
2  '{'
3  '}'
4  '~'
  DB<154>
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