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The capital Greek letter sigma (Σ) should be lowercased as σ except when it appears at the end of a word; in that case, it should be lowercased as the special form ς. This rule is included in the Unicode data file SpecialCasing.txt. The condition for applying the rule is called "Final_Sigma" and is defined in Unicode technical report 21. The rule is: • For the special casing form to apply, the capital letter sigma must be preceded by 0 or more "case-ignorable" characters, preceded by at least 1 "cased" character. • Further, capital sigma must NOT be followed by 0 or more case-ignorable characters and then at least 1 cased character. "Case-ignorable" characters include certain punctuation marks, like the apostrophe, as well as various accent marks. There are actually close to 500 different case-ignorable characters, including accent marks from Cyrillic, Hebrew, Armenian, Arabic, Syriac, Bengali, Gujarati, Telugu, Tibetan, and many other alphabets. This category also includes zero-width spaces, codepoints which indicate RTL/LTR text direction, certain musical symbols, etc. Since the rule involves scanning over "0 or more" of such case-ignorable characters, it may be necessary to scan arbitrarily far to the left and right of capital sigma to determine whether the special lowercase form should be used or not. However, since we are trying to be both memory-efficient and CPU-efficient, this implementation limits how far to the left we will scan. Generally, we scan up to 63 characters to the left looking for a "cased" character, but not more. When scanning to the right, we go up to the end of the string if necessary, even if it means scanning over thousands of characters. Anyways, it is almost impossible to imagine that natural text will include "words" with more than 63 successive apostrophes (for example) followed by a capital sigma. Closes GH-8096.
97 lines
3.8 KiB
Plaintext
97 lines
3.8 KiB
Plaintext
PHP NEWS
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?? ??? ????, PHP 8.3.0alpha1
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- CLI:
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. Added pdeathsig to builtin server to terminate workers when the master
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process is killed. (ilutov)
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- Core:
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. Fixed bug GH-9388 (Improve unset property and __get type incompatibility
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error message). (ilutov)
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. SA_ONSTACK is now set for signal handlers to be friendlier to other
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in-process code such as Go's cgo. (Kévin Dunglas)
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. SA_ONSTACK is now set when signals are disabled. (Kévin Dunglas)
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. Fix GH-9649: Signal handlers now do a no-op instead of crashing when
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executed on threads not managed by TSRM. (Kévin Dunglas)
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. Fixed potential NULL pointer dereference Windows shm*() functions. (cmb)
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. Added shadow stack support for fibers. (Chen Hu)
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. Fix bug GH-9965 (Fix accidental caching of default arguments with side
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effects). (ilutov)
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. Implement GH-10217 (Use strlen() for determining the class_name length).
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(Dennis Buteyn)
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- Fileinfo:
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. Upgrade bundled libmagic to 5.43. (Anatol)
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- FPM:
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. The status.listen shared pool now uses the same php_values (including
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expose_php) and php_admin_value as the pool it is shared with. (dwxh)
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- GD:
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. Fixed bug #81739: OOB read due to insufficient input validation in
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imageloadfont(). (CVE-2022-31630) (cmb)
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- Hash:
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. Fixed bug #81738: buffer overflow in hash_update() on long parameter.
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(CVE-2022-37454) (nicky at mouha dot be)
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- Intl:
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. Added pattern format error infos for numfmt_set_pattern. (David Carlier)
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- JSON:
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. Added json_validate(). (Juan Morales)
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- MBString:
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. mb_detect_encoding is better able to identify the correct encoding for Turkish text. (Alex Dowad)
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. mb_detect_encoding's "non-strict" mode now behaves as described in the
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documentation. Previously, it would return false if the very first byte
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of the input string was invalid in all candidate encodings. (Alex Dowad)
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. mb_strtolower, mb_strtotitle, and mb_convert_case implement conditional
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casing rules for the Greek letter sigma. For mb_convert_case, conditional
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casing only applies to MB_CASE_LOWER and MB_CASE_TITLE modes, not to
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MB_CASE_LOWER_SIMPLE and MB_CASE_TITLE_SIMPLE. (Alex Dowad)
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- Opcache:
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. Added start, restart and force restart time to opcache's
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phpinfo section. (Mikhail Galanin)
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. Fix GH-9139: Allow FFI in opcache.preload when opcache.preload_user=root.
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(Arnaud, Kapitan Oczywisty)
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. Made opcache.preload_user always optional in the cli and phpdbg SAPIs.
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(Arnaud)
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. Allows W/X bits on page creation on FreeBSD despite system settings.
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(David Carlier)
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- PCNTL:
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. SA_ONSTACK is now set for pcntl_signal. (Kévin Dunglas)
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. Added SIGINFO constant. (David Carlier)
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- Posix:
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. Added posix_sysconf. (David Carlier)
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. Added posix_pathconf. (David Carlier)
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- Random:
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. Added Randomizer::getBytesFromString(). (Joshua Rüsweg)
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. Added Randomizer::nextFloat(), ::getFloat(), and IntervalBoundary. (timwolla)
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- Reflection:
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. Fix GH-9470 (ReflectionMethod constructor should not find private parent
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method). (ilutov)
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- Sockets:
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. Added SO_ATTACH_REUSEPORT_CBPF socket option, to give tighter control
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over socket binding for a cpu core. (David Carlier)
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. Added SKF_AD_QUEUE for cbpf filters. (David Carlier)
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. Added socket_atmark if send/recv needs using MSG_OOB. (David Carlier)
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. Added TCP_QUICKACK constant, to give tigher control over
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ACK delays. (David Carlier)
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- Standard:
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. E_NOTICEs emitted by unserialize() have been promoted to E_WARNING. (timwolla)
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- Streams:
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. Fixed bug #51056: blocking fread() will block even if data is available.
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(Jakub Zelenka)
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<<< NOTE: Insert NEWS from last stable release here prior to actual release! >>>
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