RFE: getconf(1)/|pathconf()| support for |_PC_CASE_SENSITIVE| ...

[Roland Mainz]

Hi!

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Could Cygwin /bin/getconf please add support for |pathcomf(...
_PC_CASE_SENSITIVE)|, either querying
|FILE_CASE_SENSITIVE_INFORMATION| (see
https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntifs/ns-ntifs-_file_case_sensitive_information)
and check the |FILE_CS_FLAG_CASE_SENSITIVE_DIR| flag, or use the
volume flag |FILE_CASE_SENSITIVE_SEARCH| if
|FILE_CASE_SENSITIVE_INFORMATION| is not supported.

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Bye,
Roland
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