15.3.5.4 Windows File Name Case
Windows normally folds case when referring to files, unlike Unix. That
is, on Windows, the file names `file', `File', and `FiLe'
all refer to the same file. You must be aware of this when porting Unix
programs to Windows, as the Unix programs may expect that using
different case is reflected in the file system.
For example, the procedure used to build the program perl from
source relies on distinguishing between the files PERL and
perl . This fails on Windows.
As a matter of interest, the Windows file system stores files under the
name with which they were created. The DOS shell displays the
names in all upper case. The Explorer shell displays them
with each word in the file name capitalized.
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