bug#3687: 23.1.50; inconsistency in multibyte eight-bit regexps [PATCH]

[Mattias Engdegård]

Let's assume the following semantics as desirable:

1. All characters and raw bytes (up to regexp syntax) match themselves no 
matter whether they are given as literals or in character alternatives.
2. All raw bytes C match themselves and nothing else no matter whether the 
pattern or target string/buffer are unibyte or multibyte.
3. Ranges from ASCII to raw bytes work as expected and do not contain Unicode 
characters above U+007F.
4. Ranges from non-ASCII Unicode characters to raw bytes make no sense and are 
treated as empty.

Here is a patch.

0001-Correct-regexp-matching-of-raw-bytes.patch
Description: Binary data