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authorEzio Melotti <ezio.melotti@gmail.com>2011-09-01 05:11:28 (GMT)
committerEzio Melotti <ezio.melotti@gmail.com>2011-09-01 05:11:28 (GMT)
commit222b20844f28f37dbe5431eb293ef2b35df71ae7 (patch)
tree95e015a47eecba6b40ce0dc20c46df28f4ef397b /Doc/library
parenta9353db2cd0b1c2c08793a18364da6058db50caf (diff)
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From RFC 3629 5- and 6-bytes UTF-8 sequences are invalid, so remove them from the doc.
Diffstat (limited to 'Doc/library')
-rw-r--r--Doc/library/codecs.rst9
1 files changed, 2 insertions, 7 deletions
diff --git a/Doc/library/codecs.rst b/Doc/library/codecs.rst
index 922bcf4..9477133 100644
--- a/Doc/library/codecs.rst
+++ b/Doc/library/codecs.rst
@@ -839,7 +839,7 @@ There's another encoding that is able to encoding the full range of Unicode
characters: UTF-8. UTF-8 is an 8-bit encoding, which means there are no issues
with byte order in UTF-8. Each byte in a UTF-8 byte sequence consists of two
parts: Marker bits (the most significant bits) and payload bits. The marker bits
-are a sequence of zero to six 1 bits followed by a 0 bit. Unicode characters are
+are a sequence of zero to four ``1`` bits followed by a ``0`` bit. Unicode characters are
encoded like this (with x being payload bits, which when concatenated give the
Unicode character):
@@ -852,12 +852,7 @@ Unicode character):
+-----------------------------------+----------------------------------------------+
| ``U-00000800`` ... ``U-0000FFFF`` | 1110xxxx 10xxxxxx 10xxxxxx |
+-----------------------------------+----------------------------------------------+
-| ``U-00010000`` ... ``U-001FFFFF`` | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx |
-+-----------------------------------+----------------------------------------------+
-| ``U-00200000`` ... ``U-03FFFFFF`` | 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx |
-+-----------------------------------+----------------------------------------------+
-| ``U-04000000`` ... ``U-7FFFFFFF`` | 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx |
-| | 10xxxxxx |
+| ``U-00010000`` ... ``U-0010FFFF`` | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx |
+-----------------------------------+----------------------------------------------+
The least significant bit of the Unicode character is the rightmost x bit.