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Precomposed character - definition of Precomposed character in Encyclopedia (97 words) |
 | Precomposed character is a Unicode entity that can be decomposed into a canonically equivalent string of several other characters. |
| Typically, a precomposed character is decomposed into to the main character and a combining diacritical mark. |
| On most computer systems with incomplete Unicode support, the precomposed characters are easier to handle, and also they look better on displays and in print. |
| Combining character - Wikipedia, the free encyclopedia (264 words) |
| So in many cases it is possible to use both combining diacritics and precomposed characters, at the user or applications choice. |
| This leads to a requirement to perform unicode normalisation before comparing two unicode strings and to carefully design encoding converters to correctly map all of the valid ways to represent a character in unicode to a legacy encoding to avoid data loss. |
| For example when converting between windows-1258 and VISCII the former uses combining diacritics whilst the other has a large selection of precomposed characters so a converter using a simple mapping between code values and unicode code points will mess up text when converting between them. |
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