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You've noticed a problem, but are proposing the wrong solution.

The author wasn't being lazy, but overzealous.

The better solution is to simply skip the check of the filename completely.

Pass the filename supplied to the open function and let it detect and report the error.

This approach is portable because it lets the OS decide whether the string passed is valid.

The alternative is for every file handling routine to detect the current OS and then replicate all of the complex rules for filenames and paths for all systems; and that is a nonsense.


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In reply to Re: Wrong idioms by BrowserUk
in thread Wrong idioms by McA

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