updated for version 7.3.253 Problem: "echo 'abc' > ''" returns 0 or 1, depending on 'ignorecase'. Checks in mb_strnicmp() for illegal and truncated bytes are wrong. Should not assume that byte length is equal before case folding. Solution: Add utf_safe_read_char_adv() and utf_strnicmp(). Add a test for this. (Ivan Krasilnikov)

is<F4>foo
{'silent': 0, 'noremap': 0, 'lhs': 'foo<C-V>', 'mode': ' ', 'expr': 0, 'sid': 0, 'rhs': 'is<F4>foo', 'buffer': 0}
{'silent': 1, 'noremap': 1, 'lhs': 'bar', 'mode': 'v', 'expr': 1, 'sid': 0, 'rhs': 'isbar', 'buffer': 1}