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The utf8data.h file in this directory is generated from the Unicode
Character Database for version 12.1.0 of the Unicode standard.
The full set of files can be found here:
http://www.unicode.org/Public/12.1.0/ucd/
Note!
The URL's listed below are not stable. That's because Unicode 12.1.0
has not been officially released yet; it is scheduled to be released
on May 8, 2019. We taking Unicode 12.1.0 a few weeks early because it
contains a new Japanese character which is required in order to
specify Japenese dates after May 1, 2019, when Crown Prince Naruhito
ascends to the Chrysanthemum Throne. (Isn't internationalization fun?
The abdication of Emperor Akihito of Japan is requiring dozens of
software packages to be updated with only a month's notice. :-)
We will update the URL's (and any needed changes to the checksums)
after the final Unicode 12.1.0 is released.
Individual source links:
https://www.unicode.org/Public/12.1.0/ucd/CaseFolding-12.1.0d2.txt
https://www.unicode.org/Public/12.1.0/ucd/DerivedAge-12.1.0d3.txt
https://www.unicode.org/Public/12.1.0/ucd/extracted/DerivedCombiningClass-12.1.0d2.txt
https://www.unicode.org/Public/12.1.0/ucd/DerivedCoreProperties-12.1.0d2.txt
https://www.unicode.org/Public/12.1.0/ucd/NormalizationCorrections-12.1.0d1.txt
https://www.unicode.org/Public/12.1.0/ucd/NormalizationTest-12.1.0d3.txt
https://www.unicode.org/Public/12.1.0/ucd/UnicodeData-12.1.0d2.txt
md5sums (verify by running "md5sum -c README.utf8data"):
900e76da1d822a160fd6b8c0b1d70094 CaseFolding.txt
131256380bff4fea8ad4a851616f2f10 DerivedAge.txt
e731a4089b30002144e107e3d6f8d1fa DerivedCombiningClass.txt
a47c9fbd7ff92a9b261ba9831e68778a DerivedCoreProperties.txt
fcab6dad15e440879d92f315978f93d3 NormalizationCorrections.txt
f9ff1c55a60decf436100f791b44aa98 NormalizationTest.txt
755f6af699f8c8d2d958da411f78f6c6 UnicodeData.txt
sha1sums (verify by running "sha1sum -c README.utf8data"):
dc9245f6803c4ac99555c361f5052e0b13eb779b CaseFolding.txt
3281104f237184cdb5d869e86eb8573678ada7da DerivedAge.txt
2f5f995ccb96e0fa84b15151b35d5e2681535175 DerivedCombiningClass.txt
5b8698a3fcd5018e1987f296b02e2c17e696415e DerivedCoreProperties.txt
cd83935fbc012345d8792d2c704f69497e753835 NormalizationCorrections.txt
ea419aae505b337b0d99a83fa83fe58ddff7c19f NormalizationTest.txt
dc973c0fc93d6f09d9ab9f70d1c9f89c447f0526 UnicodeData.txt
To update to the newer version of the Unicode standard, the latest
released version of the UCD can be found here:
http://www.unicode.org/Public/UCD/latest/
To build the utf8data.h file, from a kernel tree that has been built,
cd to this directory (fs/unicode) and run this command:
make C=../.. objdir=../.. utf8data.h.new
After sanity checking the newly generated utf8data.h.new file (the
version generated from the 12.1.0 UCD should be 4,109 lines long, and
have a total size of 324k) and/or comparing it with the older version
of utf8data.h, rename it to utf8data.h.
If you are a kernel developer updating to a newer version of the
Unicode Character Database, please update this README.utf8data file
with the version of the UCD that was used, the md5sum and sha1sums of
the *.txt files, before checking in the new versions of the utf8data.h
and README.utf8data files.
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