Unicodecompliant

Unicodecompliant is a term used to describe software, data formats, or systems that adhere to the Unicode standards for encoding, processing, and rendering text.

In practice, this means support for Unicode encodings such as UTF-8, UTF-16, or UTF-32; correct handling of character boundaries, surrogate pairs, and non-BMP characters; and normalization to NFC or other forms to ensure consistent equivalence.

It also implies awareness of the Unicode Collation Algorithm for sorting, and of the Bidirectional Algorithm for correctly displaying right-to-left scripts alongside left-to-right ones.

Software labeled Unicodecompliant should also support emoji and variation selectors, combining marks, and allow interoperability across languages and scripts.

Font support and rendering are part of the ecosystem; a component can be Unicodecompliant in data handling even if a font cannot render all glyphs.

Terminology note: 'Unicodecompliant' is informal. Formal compliance is achieved by conforming to Unicode standards and testing with representative data, including normalization, collation, and case mapping.

Limitations: completeness of support depends on libraries and fonts; some legacy systems might misinterpret; canonical equivalence can be tricky for indexing and search; security concerns include password handling and normalization-based spoofing.

Overall, Unicodecompliant means robust, standards-based text handling across scripts, languages, and symbols.