- 産業: Computer; Software
- Number of terms: 11048
- Number of blossaries: 0
- Company Profile:
The Unicode Consortium or Unicode Inc. is a not-for-profit organization that coordinates the development of the Unicode standard. Its stated goal is to eventually enable computers to operate in all languages from around the world. The consortium develops and publishes a list of freely-available ...
The value (or in some cases small set of values) of a property associated with unassigned code points or with encoded characters for which the property is irrelevant.
* For example, for most Boolean properties, “false” is the default property value.
In such cases, the default property value used for unassigned code points may be the same value that is used for many assigned characters as well.
* Some properties, particularly enumerated properties, specify a particular, unique value as their default value. For example, “XX” is the default property value for the Line_Break property.
* A default property value is typically defined implicitly, to avoid having to repeat long lists of unassigned code points.
* In the case of some properties with arbitrary string values, the default property value is an implied null value. For example, the fact that there is no Unicode character name for unassigned code points is equivalent to saying that the default property value for the Name property for an unassigned code point is a null string.
Industry:Computer; Software
A combining character sequence that does not start with a base character.
* Defective combining character sequences occur when a sequence of combining characters appears at the start of a string or follows a control or format character.
Such sequences are defective from the point of view of handling of combining marks, but are not ill-formed.
Industry:Computer; Software
(1) A script or a form of a script used to write the vernacular or common speech of some language community. (2) A simplified form of the ancient Egyptian hieratic writing.
Industry:Computer; Software
A symbol or sign that represents a vowel and that is attached or combined with another symbol, usually one that represents a consonant. For example, in writing systems based on Arabic, Hebrew, and Indic scripts, vowels are normally represented as dependent vowel signs.
Industry:Computer; Software
Of a coded character or a character property, strongly discouraged from use. (Not the same as obsolete.)
Industry:Computer; Software
A coded character whose use is strongly discouraged. Such characters are retained in the standard, indefinitely but should not be used.
* Deprecated characters are retained in the standard indefinitely, but should not be used. They are retained in the standard so that previously conforming data stay conformant in future versions of the standard.
* Deprecated characters typically consist of characters with significant architectural problems, or ones which cause implementation problems. Some examples of characters deprecated on these grounds include tag characters and the alternate format characters.
* Deprecated characters are explicitly indicated in the Unicode Code Charts.
They are also given an explicit property value of Deprecated=True in the Unicode Character Database.
* Deprecated characters should not be confused with obsolete characters, which are historical. Obsolete characters do not occur in modern text, but they are not deprecated; their use is not discouraged.
Industry:Computer; Software
A property whose use by implementations is discouraged.
* One of the reasons a property may be deprecated is because a different combination of properties better expresses the intended semantics.
* Where sufficiently widespread legacy support exists for the deprecated property, not all implementations may be able to discontinue the use of the deprecated property. In such a case, a deprecated property may be extended to new characters so as to maintain it in a usable and consistent state.
Industry:Computer; Software
A Unicode character property whose values are algorithmically derived from some combination of simple properties.
Industry:Computer; Software
Any code point that has either been assigned to an abstract character (assigned characters) or that has otherwise been given a normative function by the standard (surrogate code points and noncharacters). This definition excludes reserved code points.
Industry:Computer; Software
Any code point that has either been assigned to an abstract character (assigned characters) or that has otherwise been given a normative function by the standard (surrogate code points and noncharacters). This definition excludes reserved code points.
Industry:Computer; Software
