On Thu, May 30, 2013 at 4:45 AM, Anthony Ramine <n.ox...@gmail.com> wrote:
> Case folding is not done correctly when matching against the [:upper:]
> character class and uppercased character ranges (e.g. A-Z).
> Specifically, an uppercase letter fails to match against any of them
> when case folding is requested because plain characters in the pattern
> and the whole string and preemptively lowercased to handle the base case

Did you mean s/and preemptively/are preemptively/ ?

> fast.
> That optimization is kept and ISLOWER() is used in the [:upper:] case
> when case folding is requested, while matching against a character range
> is retried with toupper() if the character was lowercase, as the bounds
> of the range itself cannot be modified (in a case-insensitive context,
> [A-_] is not equivalent to [a-_]).
> Signed-off-by: Anthony Ramine <n.ox...@gmail.com>
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