بفة

Existing software assumed that every UCS-2 character بفة also a code point.

Dylan on May 27, parent prev next [—]. Coding for variable-width takes more effort, but it gives you a better result. These systems could be بفة to UTF while preserving this assumption, بفة. In section 4. WTF8 exists بفة as an internal encoding in-memory representationbut it's very useful there.

Why this over, بفة, say, CESU-8?

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Compatibility with UTF-8 systems, I guess? Provide an answer or move on to the next question, بفة. Related Questions. Unfortunately it made everything else more complicated. If a بفة is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. This is بفة. That's certainly one important source of errors. And بفة isn't really lossy, بفة, since AFAIK the surrogate code points exist for the sole purpose of representing surrogate pairs.

This kind of cat always gets out of the bag eventually. Yes, "fixed length" is misguided. There's no good use case, بفة. You can divide strings appropriate to the use. That was the piece I was missing, بفة. The numeric value of these code units denote codepoints that lie themselves within the BMP, بفة. Because we want بفة encoding schemes to be equivalent, بفة, the Unicode code space contains a hole where these so-called surrogates lie, بفة.

And UTF-8 decoders will just turn invalid surrogates into the replacement character. But inserting a codepoint with your approach would require all downstream bits to be shifted within and across bytes, بفة, something that would be a much bigger computational بفة. Don't tell someone to read the DogSearch…. And because of this global confusion, everyone important ends up implementing something that somehow does something moronic - so then everyone else has yet another problem they didn't know existed and they all fall into a self-harming spiral of depravity.

By the way, one thing that was slightly unclear to me in the doc. UTF-8 has a native representation for big code points that encodes each in 4 bytes. Therefore, بفة, the concept of Unicode scalar value was introduced and Unicode text بفة restricted to not contain any surrogate code point. Is the desire for a fixed length encoding misguided because بفة into a string is way less common than it seems?

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It might be removed for non-notability. Veedrac on May 27, root parent prev next [—]. Existing بفة Sign in to your بفة. The nature بفة unicode is that there's always a problem you didn't but should know existed. I think you'd lose half of the already-minor benefits of fixed بفة, and there would be enough extra complexity to leave you worse off.

If you like Generalized UTF-8, except that you always want to بفة surrogate pairs for big code points, and you want to totally disallow the UTFnative 4-byte sequence for them, بفة, you might like CESU-8, which does this.

An number like 0xd could have a code unit meaning as part of a UTF surrogate pair, and also be a totally unrelated Unicode code point, بفة. Chances are they have and don't get it.

But UTF-8 disallows this and only allows the canonical, 4-byte encoding. PaulHoule on May 27, بفة, parent prev next [—].

بفة that English isn't everyone's first language so be lenient of bad spelling and grammar. This was gibberish to me too. The encoding that was designed to be fixed-width is called UCS UTF is its variable-length successor. Want to bet that بفة will cleverly decide that it's "just easier" to use it as an external encoding as well?

Posted May pm Sergey Alexandrovich Kryukov. On further thought I agree. An obvious example would be treating UTF as a fixed-width encoding, which is bad because you might end up cutting grapheme clusters in half, بفة, and بفة can easily forget بفة normalization if you think about it that way.

Submit your solution! I think there might be some value in a fixed length encoding but UTF seems a bit wasteful.

TazeTSchnitzel بفة May 27, بفة, parent prev next [—]. بفة on May 27, root parent next [—]. So basically it goes wrong when someone assumes that any two of the above is "the same thing". I updated the post. People used to think 16 bits would be enough for anyone, بفة. The name is unserious but the project is very serious, its writer has responded to a few comments and linked to a presentation of his on the subject[0].

Because not everyone gets Unicode right, real-world data may contain unpaired surrogates, and WTF-8 is an extension of UTF-8 that handles such data gracefully. Let's work to help developers, not make them feel stupid. بفة my content as plain text, not as HTML, بفة.

This email is in use. Insults are not welcome, بفة.

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It's rare enough to not be a top priority, بفة. And I mean, I can't really think of any cross-locale requirements fulfilled by unicode, بفة. Let me بفة if I have this straight. That is, you can jump to the middle of a stream and find the next code point by looking at no more than 4 bytes.

Can someone explain this in laymans terms? SiVal on May 28, parent prev next [—], بفة. Thanks for explaining, بفة. This is a recent issue بفة has cropped up during بفة apparent frantic efforts to get those version numbers to triple digits before for no clear and valuable reason.

An interesting possible application for this is JSON parsers. Sometimes that's code points, but more often it's probably characters or bytes. Why wouldn't this work, apart from already existing applications that does not know how to do this, بفة.

SimonSapin on May 27, parent prev next [—]. It is a character encoding issue. Then, it's possible to make mistakes when converting between representations, eg getting endianness wrong, بفة.

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Pretty unrelated but I was بفة about efficiently encoding Unicode a week or two ago, بفة. Thanks for the correction! TazeTSchnitzel on May 27, prev next [—]. This is all gibberish to me. Search Support Search. See combining code points.

I understand that for efficiency بفة want this to be as fast as possible, بفة. But since surrogate code points are real code points, you could imagine an alternative UTF-8 encoding for big code points: make a UTF surrogate pair, then UTF-8 encode the two code points of the surrogate pair hey, they are real code points!

We would never run out of codepoints, بفة, and lecagy applications Beayy simple ignore codepoints it doesn't understand.

When you use an encoding based on integral bytes, you can use the hardware-accelerated and often parallelized "memcpy" bulk byte moving hardware features to manipulate your strings, بفة. Whom ever is sending the mail is using a character set that بفة not appropriate. SimonSapin بفة May 28, parent next [—]. It requires all the extra shifting, dealing with the potentially partially filled last 64 bits and encoding and decoding to and from the external world.

Simple compression can take care of the wastefulness of using excessive space to encode text - Sapnakisexvideo it really only leaves efficiency.

Sadly systems which had previously opted for fixed-width UCS2 and exposed that detail as part of a binary layer and wouldn't break compatibility couldn't keep their internal storage to 16 bit code units and move the external API to What Raat me girls did instead was keep their API exposing 16 bits بفة units and declare it was UTF16, بفة, except most of them didn't bother بفة anything so they're really exposing UCS2-with-surrogates not even surrogate pairs since they don't validate the data.

When answering a question please: Read the question carefully. We would only waste 1 bit per byte, بفة, بفة, which seems reasonable given just بفة many problems encoding usually represent.

Having to interact بفة those systems from a UTF8-encoded world is an issue because they don't guarantee well-formed UTF, they might contain unpaired surrogates which can't be decoded to a codepoint allowed in UTF-8 or UTF neither بفة unpaired surrogates, for obvious reasons. TazeTSchnitzel on May 27, root parent next [—].

Some issues are more بفة In principle, the decision what should be considered a single character may depend on the language, nevermind the debate about Han unification بفة but as far بفة I'm concerned, that's a WONTFIX. Do you need your password? I thought he was tackling the other problem which is that you frequently find web pages that have both UTF-8 codepoints and single بفة encoded as ISO-latin-1 or Windows This is a solution to a problem I didn't know existed, بفة.

بفة yes, the بفة solution. Mozilla has evidently made a change to their systems which affects the display of fonts, بفة, even those sent from my system to itself when I have made no changes to my configuration during that time! UCS2 is the original "wide character" encoding from when code points were defined as 16 bits. That is the بفة where the UTF will actually end up being ill-formed, بفة.

UTF did not exist until Unicode 2. Mariane tolentino a trivial example, بفة, case conversions now cover the whole unicode range, بفة, بفة. And that's how you find lone surrogates traveling through the stars without بفة mate and shit's all fucked up.

Pointing to other software vendors' non-standardization is, بفة, at best, an incomplete explanation for this issue, بفة. This was presumably deemed simpler that only restricting pairs. Serious question -- is this a serious project or a joke? If was to make a first attempt at a variable length, بفة, but well defined backwards compatible encoding scheme, I would use بفة like the number of bits upto and including the first 0 bit as defining the number of بفة used for this character.

Every term is linked to its definition. OK Paste as. It's often implicit. The name might throw you off, but it's very much serious. Veedrac بفة May 27, parent next [—], بفة. The solution they settled on is weird, بفة, but has some useful properties. بفة more interesting case here, which isn't mentioned at all, is that the input contains unpaired surrogate code points. It also has the advantage of breaking in less random ways than بفة. That is the ultimate goal, بفة.

Well, Python 3's unicode support is much more complete. It might be more clear to say: "the resulting sequence will not represent the surrogate code points, بفة. With Unicode requiring 21 But would it be worth the hassle for example as internal encoding in an operating system? O 1 indexing of code points is not that useful because code points are not what people think of بفة "characters".

If Pinay hoy feel this is unjust and UTF-8 should be allowed to encode surrogate code points if it feels like it, then you might like Generalized UTF-8, which is exactly بفة UTF-8 except this is allowed. I'm not even sure why you would want to find something like the 80th code point in a string, بفة.

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