Skip reserved characters when representing lines as characters in diff_linemode #8
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In Rust char represents a unicode scalar, which can be any unicode code point, except code points reserved for surrogates (http://www.unicode.org/glossary/#unicode_scalar_value).
Trying to create a char from a code point in reserved range results in an error. Currently the code ignores the error and skips the character, which can result in wrong diffs for texts with large number of lines.
In this PR I'm skipping the reserved code points range when representing lines as characters in diff_lines_tochars_munge.