prosody
88ba05494d17
spec/utf8_sequences.txt
Software / code / prosody
File
spec/utf8_sequences.txt @ 11748:88ba05494d17 0.11
makefile: fix prosody.version target
POSIX is quite explicit regarding the precedence of AND-OR lists [0]:
> The operators "&&" and "||" shall have equal precedence and shall be
> evaluated with left associativity. For example, both of the following
> commands write solely `bar` to standard output:
> false && echo foo || echo bar
> true || echo foo && echo bar
Given that, `prosody.version` target behaves as
((((((test -f prosody.release && cp ...) ||
test -f ...) &&
sed ...) ||
test -f ...) &&
hexdump ...) ||
echo unknown > $@)
In the case of release tarballs, `prosody.release` does exist, so the
first AND pair is executed. Given that it's successful, then the first
`test -f` in the OR pair is ignored, and instead the `sed` in the AND
pair is executed. `sed` success, as `.hg_archival.txt` exists, making
the second `test -f` in the OR pair ignored, and `hexdump` in the AND
pair is executed. Now, given that `.hg` doesn't exist, it fails, so the
last `echo` is run, overwriting `prosody.version` with `unknown`.
This can be worked around placing `()` around the AND pairs. Decided to use
conditionals instead, as I think they better communicate the intention
of the block.
[0]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_03
| author | Lucas <lucas@sexy.is> |
|---|---|
| date | Sun, 15 Aug 2021 04:10:36 +0000 |
| parent | 8236:4878e4159e12 |
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Should pass: 41 42 43 # Simple ASCII - abc Should pass: 41 42 c3 87 # "ABÇ" Should pass: 41 42 e1 b8 88 # "ABḈ" Should pass: 41 42 f0 9d 9c 8d # "AB𝜍" Should pass: F4 8F BF BF # Last valid sequence (U+10FFFF) Should fail: F4 90 80 80 # First invalid sequence (U+110000) Should fail: 80 81 82 83 # Invalid sequence (invalid start byte) Should fail: C2 C3 # Invalid sequence (invalid continuation byte) Should fail: C0 43 # Overlong sequence Should fail: F5 80 80 80 # U+140000 (out of range) Should fail: ED A0 80 # U+D800 (forbidden by RFC 3629) Should fail: ED BF BF # U+DFFF (forbidden by RFC 3629) Should pass: ED 9F BF # U+D7FF (U+D800 minus 1: allowed) Should pass: EE 80 80 # U+E000 (U+D7FF plus 1: allowed) Should fail: C0 # Invalid start byte Should fail: C1 # Invalid start byte Should fail: C2 # Incomplete sequence Should fail: F8 88 80 80 80 # 6-byte sequence Should pass: 7F # Last valid 1-byte sequence (U+00007F) Should pass: DF BF # Last valid 2-byte sequence (U+0007FF) Should pass: EF BF BF # Last valid 3-byte sequence (U+00FFFF) Should pass: 00 # First valid 1-byte sequence (U+000000) Should pass: C2 80 # First valid 2-byte sequence (U+000080) Should pass: E0 A0 80 # First valid 3-byte sequence (U+000800) Should pass: F0 90 80 80 # First valid 4-byte sequence (U+000800) Should fail: F8 88 80 80 80 # First 5-byte sequence - invalid per RFC 3629 Should fail: FC 84 80 80 80 80 # First 6-byte sequence - invalid per RFC 3629 Should pass: EF BF BD # U+00FFFD (replacement character) Should fail: 80 # First continuation byte Should fail: BF # Last continuation byte Should fail: 80 BF # 2 continuation bytes Should fail: 80 BF 80 # 3 continuation bytes Should fail: 80 BF 80 BF # 4 continuation bytes Should fail: 80 BF 80 BF 80 # 5 continuation bytes Should fail: 80 BF 80 BF 80 BF # 6 continuation bytes Should fail: 80 BF 80 BF 80 BF 80 # 7 continuation bytes Should fail: FE # Impossible byte Should fail: FF # Impossible byte Should fail: FE FE FF FF # Impossible bytes Should fail: C0 AF # Overlong "/" Should fail: E0 80 AF # Overlong "/" Should fail: F0 80 80 AF # Overlong "/" Should fail: F8 80 80 80 AF # Overlong "/" Should fail: FC 80 80 80 80 AF # Overlong "/" Should fail: C0 80 AF # Overlong "/" (invalid) Should fail: C1 BF # Overlong Should fail: E0 9F BF # Overlong Should fail: F0 8F BF BF # Overlong Should fail: F8 87 BF BF BF # Overlong Should fail: FC 83 BF BF BF BF # Overlong Should pass: EF BF BE # U+FFFE (invalid unicode, valid UTF-8) Should pass: EF BF BF # U+FFFF (invalid unicode, valid UTF-8)
