RFR: 8290047: (fs) FileSystem.getPathMatcher does not check for ":" at last index [v3]

[Roger Riggs]

On Thu, 21 Jul 2022 19:58:50 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> For a `String` “s”, `s.indexOf(int)` can never return a value `>= s.length()` so change the check
>> 
>>         int pos = syntaxAndInput.indexOf(':');
>>         if (pos <= 0 || pos == syntaxAndInput.length())
>> 
>> to
>> 
>>         if (pos <= 0)
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8290047: Remove IAE message in JrtFileSystem.getPathMatcher()

> 

The existing code downstream of the check handles an empty glob or regex pattern as matching the empty string.
If I read it correctly, it will now throw an exception instead of not matching.  It might be safer to not change that behavior.

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PR: https://git.openjdk.org/jdk/pull/9595