Several copies of the licenses in files contained whitespace related
problems. Two cases are addressed here, the first is two spaces
after a period which appears between "PURPOSE." and "See". The other
is a space after the last forward slash in the URL. Both issues are
corrected and the licenses now match the official textual description
of the license (and the other license in the sources).
Since these whitespaces changes do not alter the paragraph structure of
the license, nor create new sentences, they do not change the license.
= `Default_Ignorable_Code_Point`s should have width 0 =
Unicode specifies (https://www.unicode.org/faq/unsup_char.html#3) that characters
with the `Default_Ignorable_Code_Point` property
> should be rendered as completely invisible (and non advancing, i.e. “zero width”),
if not explicitly supported in rendering.
Hence, `wcwidth()` should give them all a width of 0, with two exceptions:
- the soft hyphen (U+00AD SOFT HYPHEN) is assigned width 1 by longstanding precedent
- U+115F HANGUL CHOSEONG FILLER needs a carveout
due to the unique behavior of the conjoining Korean jamo characters.
One composed Hangul "syllable block" like 퓛
is made up of two to three individual component characters, or "jamo".
These are all assigned an `East_Asian_Width` of `Wide`
by Unicode, which would normally mean they would all be assigned
width 2 by glibc; a combination of (leading choseong jamo) +
(medial jungseong jamo) + (trailing jongseong jamo) would then have width 2 + 2 + 2 = 6.
However, glibc (and other wcwidth implementations) special-cases jungseong and jongseong,
assigning them all width 0,
to ensure that the complete block has width 2 + 0 + 0 = 2 as it should.
U+115F is meant for use in syllable blocks
that are intentionally missing a leading jamo;
it must be assigned a width of 2 even though it has no visible display
to ensure that the complete block has width 2.
However, `wcwidth()` currently (before this patch)
incorrectly assigns non-zero width to
U+3164 HANGUL FILLER and U+FFA0 HALFWIDTH HANGUL FILLER;
this commit fixes that.
Unicode spec references:
- Hangul: §3.12 https://www.unicode.org/versions/Unicode15.0.0/ch03.pdf#G24646 and
§18.6 https://www.unicode.org/versions/Unicode15.0.0/ch18.pdf#G31028
- `Default_Ignorable_Code_Point`: §5.21 https://www.unicode.org/versions/Unicode15.0.0/ch05.pdf#G40095.
= Non-`Default_Ignorable_Code_Point` format controls should be visible =
The Unicode Standard, §5.21 - Characters Ignored for Display
(https://www.unicode.org/versions/Unicode15.0.0/ch05.pdf#G40095)
says the following:
> A small number of format characters (General_Category = Cf )
> are also not given the Default_Ignorable_Code_Point property.
> This may surprise implementers, who often assume
> that all format characters are generally ignored in fallback display.
> The exact list of these exceptional format characters
> can be found in the Unicode Character Database.
> There are, however, three important sets of such format characters to note:
>
> - prepended concatenation marks
> - interlinear annotation characters
> - Egyptian hieroglyph format controls
>
> The prepended concatenation marks always have a visible display.
> See “Prepended Concatenation Marks” in [*Section 23.2, Layout Controls*](https://www.unicode.org/versions/Unicode15.1.0/ch23.pdf#M9.35858.HeadingBreak.132.Layout.Controls)
> for more discussion of the use and display of these signs.
>
> The other two notable sets of format characters that exceptionally are not ignored
> in fallback display consist of the interlinear annotation characters,
> U+FFF9 INTERLINEAR ANNOTATION ANCHOR through
> U+FFFB INTERLINEAR ANNOTATION TERMINATOR,
> and the Egyptian hieroglyph format controls,
> U+13430 EGYPTIAN HIEROGLYPH VERTICAL JOINER through
> U+1343F EGYPTIAN HIEROGLYPH END WALLED ENCLOSURE.
> These characters should have a visible glyph display for fallback rendering,
> because if they are not displayed,
> it is too easy to misread the resulting displayed text.
> See “Annotation Characters” in [*Section 23.8, Specials*](https://www.unicode.org/versions/Unicode15.1.0/ch23.pdf#M9.21335.Heading.133.Specials),
> as well as [*Section 11.4, Egyptian Hieroglyphs*](https://www.unicode.org/versions/Unicode15.1.0/ch11.pdf#M9.73291.Heading.1418.Egyptian.Hieroglyphs)
> for more discussion of the use and display of these characters.
glibc currently correctly assigns non-zero width to the prepended concatenation marks,
but it incorrectly gives zero width to the interlinear annotation characters
(which a generic terminal cannot interpret)
and the Egyptian hieroglyph format controls
(which are not widely supported in rendering implementations at present).
This commit fixes both these issues as well.
= Derive Hangul syllable type from Unicode data =
Previosuly, the jungseong and jongseong jamo ranges
were hard-coded into the script. With this commit, they are instead parsed
from the HangulSyllableType.txt data file published by Unicode.
This does not affect the end result.
Signed-off-by: Jules Bertholet <julesbertholet@quoi.xyz>
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
In some places there was still the old Unicode version 10.0.0 in the files.
* localedata/charmaps/UTF-8: Use correct Unicode version 11.0.0 in comment.
* localedata/locales/i18n_ctype: Use correct Unicode version in comments
and headers.
* localedata/unicode-gen/utf8_gen.py: Add option to specify Unicode version
* localedata/unicode-gen/Makefile: Use option to specify Unicode version
for utf8_gen.py
[BZ #22070]
* localedata/unicode-gen/utf8_gen.py: Set the width for
characters with Prepended_Concatenation_Mark property to 1
* localedata/charmaps/UTF-8: Updated using the improved script.
Writing ranges of neighbouring characters with the same with like this
<U000E0100>...<U000E01EF> 0
in charmaps/UTF-8 is more efficient than writing many single character lines
like:
<U000E0100> 0
<U000E0101> 0
...
[BZ #21750]
* unicode-gen/utf8_gen.py: Write all ranges of neighbouring characters
with the same width using the range notation in charmaps/UTF-8.
[BZ #21750]
* unicode-gen/utf8_gen.py (U+00AD): Set width to 1.
* unicode-gen/utf8_gen.py (U+1160..U+11FF): Set width to 0.
* unicode-gen/utf8_gen.py (U+3248..U+324F): Set width to 2.
* unicode-gen/utf8_gen.py (U+4DC0..U+4DFF): Likewise.
[BZ #19852]
[BZ #21750]
* unicode-gen/utf8_gen.py: Process EastAsianWidth lines before
UnicodeData lines so the latter have precedence; remove hack
to group output by EastAsianWidth ranges.
for ChangeLog
* include/stdc-predef.h (__STDC_ISO_10646__): Update to
201304L, for Unicode 7.
for localedata/ChangeLog
* unicode-gen/ctype_compatibility.py: Use date ranges in
copyright notice.
* unicode-gen/ctype_compatibility_test_cases.py: Likewise.
* unicode-gen/gen_unicode_ctype.py: Likewise.
* unicode-gen/utf8_compatibility.py: Likewise.
* unicode-gen/utf8_gen.py: Likewise. Use upper case for
global variables, use tuples for global constant arrays. From
Mike FABIAN. Suggested by Mike Frysinger <vapier@gentoo.org>.
for localedata/ChangeLog
[BZ #17588]
[BZ #13064]
[BZ #14094]
[BZ #17998]
* unicode-gen/Makefile: New.
* unicode-gen/unicode-license.txt: New, from Unicode.
* unicode-gen/UnicodeData.txt: New, from Unicode.
* unicode-gen/DerivedCoreProperties.txt: New, from Unicode.
* unicode-gen/EastAsianWidth.txt: New, from Unicode.
* unicode-gen/gen_unicode_ctype.py: New generator, from Mike
FABIAN <mfabian@redhat.com>.
* unicode-gen/ctype_compatibility.py: New verifier, from
Pravin Satpute <psatpute@redhat.com> and Mike FABIAN.
* unicode-gen/ctype_compatibility_test_cases.py: New verifier
module, from Mike FABIAN.
* unicode-gen/utf8_gen.py: New generator, from Pravin Satpute
and Mike FABIAN.
* unicode-gen/utf8_compatibility.py: New verifier, from Pravin
Satpute and Mike FABIAN.
* charmaps/UTF-8: Update.
* locales/i18n: Update.
* gen-unicode-ctype.c: Remove.
* tst-ctype-de_DE.ISO-8859-1.in: Adjust, islower now returns
true for ordinal indicators.
