Hi Hirofumi,
Why is shortname=lower the default mount option for vfat filesystems? Because, with "shortname=lower", copying one FAT32 filesystem tree to another FAT32 filesystem tree using Liux results in semantically different filesystems. (E.g.: Filenames which were once "all uppercase" are now "all lowercase").
With "shortname=mixed", such semantic changes would not occur. That's why I'd consider "shortname=lower" as default mount option as a bug. I'd propose "shortname=mixed" as default as a fix for this bug.
What do you think?
ciao, Xuân.
P.S.: "man mount" says:
shortname=[lower|win95|winnt|mixed]
Defines the behaviour for creation and display of filenames which fit into 8.3 characters. If a long name for a file exists, it will always be preferred display. There are four modes:
lower Force the short name to lower case upon display; store a long name when the short name is not all upper case.
win95 Force the short name to upper case upon display; store a long name when the short name is not all upper case.
winnt Display the shortname as is; store a long name when the short name is not all lower case or all upper case.
mixed Display the short name as is; store a long name when the short name is not all upper case.
The default is "lower".
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