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We are implementing an API that makes use of internal databases. We don't really have any control over which filesystems this will be implemented on.

My question is, does any modern filesystem not support multiple "." characters in a filename? (IE we want to use foo.bar.db.....) We have already blown through that massive 8 characters allowed by dos so I am not too worried about the 8.3 rule.

Regards, PablitoRun

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One can't prove that there ISN'T some rare and esoteric thing out there somewhere that somebody uses and which enforces draconian limitations, but I wouldn't worry about it! –  Celada Jan 6 '12 at 16:34
I'd not be concerned of multiple dots. Much more of casing and allowed characters in file names. Make 100% sure you consistently case file names and do not rely on any specific casing strategy. –  Analog File Aug 10 '12 at 7:52

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