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From "Niall Pemberton (JIRA)" <>
Subject [jira] Commented: (IO-171) IO assumes there are only two OSes: Windows and Unix
Date Fri, 30 May 2008 14:16:45 GMT


Niall Pemberton commented on IO-171:

I'm just wondering how you're *unknown* state would work exactly, perhaps something like:
 * if the system is "OpenVMS" then IOCase's methods (e.g.isCaseSensitive(), checkCompareTo(),
etc) throw an exception

>From my PoV that doesn't add anything to IO or help OpenVMS users - as it stands currently
it doesn't work for OpenVMS users who wants "case-insensitive" - with that kind of change
it doesn't work for ALL OpenVMS users - plus it messes up any existing OpenVMS users who have
been relying on the current behaviour.

> IO assumes there are only two OSes: Windows and Unix
> ----------------------------------------------------
>                 Key: IO-171
>                 URL:
>             Project: Commons IO
>          Issue Type: Bug
>            Reporter: Sebb
>            Priority: Minor
> Just noticed that IO assumes systems are either:
> Windows-like:
> * File.separatorChar = \
> * Case-insensitive matching
> or
> Unix-like:
> * File.separatorChar = /
> * Case-sensitive matching
> It may well be true that there are only two different file sepator characters, but it
is not true that all non-Windows systems use case-sensitive matching.
> For example, OpenVMS uses a file separator char of /, but originally only supported case-insensitive
file names (always shown as uppercase).
> Current versions of OpenVMS support both upper and lower-case; the default is to use
case-insenstive matching (and upper case names).
> Perhaps the IOCase.SYSTEM constant needs to have an "Unknown" or "Variable" setting for
this; it would then be an error to use IOCase.SYSTEM to determine the case sensitivity.

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