Zero-width non-breaking space
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The word joiner (WJ) is a format
character Character or Characters may refer to: Arts, entertainment, and media Literature * ''Character'' (novel), a 1936 Dutch novel by Ferdinand Bordewijk * ''Characters'' (Theophrastus), a classical Greek set of character sketches attributed to The ...
in Unicode used to indicate that word separation should not occur at a position, when using scripts such as Arabic that do not use explicit spacing. It is encoded since Unicode version 3.2 (released in 2002) as . The word joiner does not produce any space and prohibits a line break at its position. Thus, it is a nonbreaking space with zero width. The word joiner replaces the ''zero-width no-break space'' (''ZWNBSP'', U+FEFF), as a usage of the no-break space of zero width. Character U+FEFF is intended for use as a byte order mark (BOM) at the start of a file. However, if encountered elsewhere, it should, according to Unicode, be treated as a zero-width no-break space. The deliberate use of U+FEFF for this purpose is deprecated as of Unicode 3.2, with the word joiner strongly preferred.FAQ - UTF-8, UTF-16, UTF-32 & BOM, ''”What should I do with U+FEFF in the middle of a file?“''


See also

* Byte order mark, which uses (ZWNBSP) character * Zero-width space * Zero-width joiner


References

Control characters Unicode formatting code points {{Software-eng-stub