On 18/09/12 18:03, Bram Moolenaar wrote:
Patch 7.3.664
Problem: Buffer overflow in unescaping text. (Raymond Ko)
Solution: Limit check for multi-byte character to 4 bytes.
Files: src/mbyte.c
[...]
Note: Maximum value of a Unicode codepoint, as currently defined by the
Unicode Consortium, is (and shall never exceed in future versions, they
say) U+10FFFD, and for that 4 UTF-8 bytes are indeed enough (U+10FFFD in
UTF-8 is hex F4 8F BF BD). But Vim accepts codepoints up to U+7FFFFFFF,
as in the first version of the Unicode (or was it ISO 10646?) standard,
and that requires up to 6 bytes (U+7FFFFFFF in UTF-8 is hex FD BF BF BF
BF BF). See for instance ":help i_CTRL-V_digit".
Best regards,
Tony.
--
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