Questions tagged [utf-8]
For questions about the character encoding for Unicode.
21 questions
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Should a Java project use UTF-16? [closed]
Java, by default, uses UTF-16 to represent characters in the String data type.
I inherited a JavaFX project which currently has some Strings in UTF-8 and others in UTF-16. This is causing bugs (in pop-...
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UTF-8 questions
When you encode a code point to code units based on UTF-8, then if the code point fits on 7 bits, the most significant bit is set to zero so that it tells you it is a character which is stored on 1 ...
3
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2
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Are international UTF-8 e-mail addresses a thing or not?
RFC6530 defines the necessary steps for "international e-mail" (i.e., especially for UTF-8 e-mail addresses). Apparently Google adopted the RFC back in 2014 (source). Still, most validators ...
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2
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Why Unicode Encoding/Decoding is Necessary in JavaScript
I am wondering why unicode encoding is necessary in JavaScript. I am looking at utf8.js as an example. I am also looking at the utf8 spec, but am not really following the different pieces of data. ...
- 2,661
8
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1
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580
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Do C++'s iterator categories forbid writing a UTF-8 iterator adapter?
I've been working on a UTF-8 iterator adapter. By which, I mean an adapter that turns an iterator to a char or unsigned char sequence into an iterator to a char32_t sequence. My work here was inspired ...
- 12k
2
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2
answers
777
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Is there a good single byte delimeter for use with utf-8 strings that isn't a null terminator?
I'm looking for a quick way to split strings containing individual JSON payloads. Currently, I'm using newlines and searching for the newline ASCII character, but I figure if I start using utf-8 this ...
89
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Would UTF-8 be able to support the inclusion of a vast alien language with millions of new characters?
In the event an alien invasion occurred and we were forced to support their languages in all of our existing computer systems, is UTF-8 designed in a way to allow for their possibly vast amount of ...
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2
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Does UTF-16 have some kind of separator in it?
From the UTF-16's wikipedia entry, the second sentence states it's a variable length encoding.
But where is the separator between a 16-bit character and 32-bit encoding? I know a lot of characters ...
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70
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6
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Should Latin-1 be used over UTF-8 when it comes to database configuration?
We are using MySQL at the company I work for, and we build both client-facing and internal applications using Ruby on Rails.
When I started working here, I ran into a problem what I had never ...
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2
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2
answers
1k
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How to detect client character encoding?
I programmed a telnet server using C as programming language but I have a problem to send characters with emphases (é, è, à ...). The character encoding is different between the telnet clients (...
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4
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Why does UTF-8 waste several bits in its encoding
According to the Wikipedia article, UTF-8 has this format:
First code Last code Bytes Byte 1 Byte 2 Byte 3 Byte 4
point point Used
U+0000 U+007F 1 0xxxxxxx
U+0080 U+...
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2
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When is it beneficial to not use utf-8? [duplicate]
When is it beneficial to use encodings other than UTF-8? Aside from dealing with pre-unicode documents, that is. And more importantly, why isn't UTF-8 the default in most languages? That is, why do I ...
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UTF-16 Pitfalls, Chinese
I'm going to be writing an application that is pure HTML5 and JS and MVC.net back-end.
We have .resx files that are getting compiled to .js files for resources in the html5 application. The ...
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168
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6
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834k
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How to detect the encoding of a file?
On my filesystem (Windows 7) I have some text files (These are SQL script files, if that matters).
When opened with Notepad++, in the "Encoding" menu some of them are reported to have an encoding of "...
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583
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Is the use of "utf8=✓" preferable to "utf8=true"?
I have recently seen a few URIs containing the query parameter "utf8=✓". My first impression (after thinking "mmm, looks cool") was that this could be used to detect a broken character encoding.
So, ...
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2
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2
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What are the commonly confused encodings that may result in identical test data?
I'm fixing code that is using ASCIIEncoding in some places and UTF-8 encoding in other functions.
Since we aren't using the UTF-8 features, all of our unit tests passed, but I want to create a ...
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3
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8k
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Should my source code be in UTF-8?
I feel that often you don't really choose what format your code is in. I mean most of my tools in the past have decided for me. Or I haven't really even thought about it. I was using TextPad on ...
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What steps can I take to avoid character encoding issues in a web application?
In previous web applications I've built, I've had issues with users entering exotic characters into forms which get stored strangely in the database, and sometimes appear different or double-encoded ...
- 3,497
120
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5
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What is the advantage of choosing ASCII encoding over UTF-8?
All characters in ASCII can be encoded using UTF-8 without an increase in storage (both requires a byte of storage).
UTF-8 has the added benefit of character support beyond "ASCII-characters". If ...
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17
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2
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8k
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Is UTF-16 fixed-width or variable-width? Why doesn't UTF-8 have byte-order problem?
Is UTF-16 fixed-width or variable-width? I got different results
from different sources:
From http://www.tbray.org/ongoing/When/200x/2003/04/26/UTF:
UTF-16 stores Unicode characters in sixteen-bit ...
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34
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8
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8k
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Should character encodings besides UTF-8 (and maybe UTF-16/UTF-32) be deprecated?
A pet peeve of mine is looking at so many software projects that have mountains of code for character set support. Don't get me wrong, I'm all for compatibility, and I'm happy that text editors let ...
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