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Fix document.characterSet not reflecting byte order marks.

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The process of decoding the network byte stream to Unicode is backed by
an instance of `encoding_rs::Decoder`, which will switch the encoding it
uses if it finds a BOM in the byte stream. However, this change in
encoding is not communicated back to the caller and so
`document.characterSet` gives the wrong result. This change fixes that.

See whatwg/html#5359 and whatwg/encoding#203 for the spec-level backing
for this change.

Signed-off-by: Andreu Botella <abb@randomunok.com>
This commit is contained in:
Andreu Botella 2020-12-30 09:46:29 +01:00
parent be19c03d96
commit cd34f156f6
8 changed files with 64 additions and 52 deletions
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4
tests/wpt/metadata-layout-2020/encoding/bom-handling.html.ini
View file

@ -1,4 +0,0 @@
[bom-handling.html]
[document.characterSet should match the BOM]
expected: FAIL

4
tests/wpt/metadata/encoding/bom-handling.html.ini
View file

@ -1,4 +0,0 @@
[bom-handling.html]
[document.characterSet should match the BOM]
expected: FAIL

6
tests/wpt/metadata/encoding/utf-32-from-win1252.html.ini
View file

@ -1,10 +1,4 @@
[utf-32-from-win1252.html]
[Expect resources/utf-32-little-endian-bom.xml to parse as UTF-16LE]
expected: FAIL
[Expect resources/utf-32-little-endian-bom.html to parse as UTF-16LE]
expected: FAIL
[Expect resources/utf-32-big-endian-bom.html to parse as windows-1252]
expected: FAIL

26
tests/wpt/metadata/encoding/utf-32.html.ini
View file

@ -1,26 +0,0 @@
[utf-32.html]
type: testharness
[Expect resources/utf-32-big-endian-bom.html to parse as windows-1252]
expected: FAIL
[Expect resources/utf-32-big-endian-bom.xml to parse as windows-1252]
expected: FAIL
[Expect resources/utf-32-big-endian-nobom.html to parse as windows-1252]
expected: FAIL
[Expect resources/utf-32-big-endian-nobom.xml to parse as windows-1252]
expected: FAIL
[Expect resources/utf-32-little-endian-bom.html to parse as UTF-16LE]
expected: FAIL
[Expect resources/utf-32-little-endian-bom.xml to parse as UTF-16LE]
expected: FAIL
[Expect resources/utf-32-little-endian-nobom.html to parse as windows-1252]
expected: FAIL
[Expect resources/utf-32-little-endian-nobom.xml to parse as windows-1252]
expected: FAIL