U+0454 CYRILLIC SMALL LETTER UKRAINIAN IE

U+0454 was added to Unicode in version 1.1 (1993). It belongs to the block Cyrillic in the Basic Multilingual Plane.

This character is a Lowercase Letter and is mainly used in the Cyrillic script. It is related to its uppercase variant and its titlecase variant . The character is also known as Old Cyrillic yest.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 23 other glyphs. In text U+0454 behaves as Alphabetic regarding line breaks. It has type Lower for sentence and ALetter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Ukrainian Ye (Є є; italics: Є є) is a character of the Cyrillic script. It is considered as an individual letter of modern Ukrainian alphabet (the 8th in row since 1992, and the 7th before this date) and as a variant form of Ye (Е е) in modern Church Slavonic language (where the selection of Є and Е is driven by orthography rules, see below). Until the mid-19th century, Є/є has also been used in Serbian language (in Vuk Karadžić's alphabet, the letter was eliminated and replaced by digraph је). Other modern Slavonic languages may use Є/є shapes instead of Е/е for decorative purposes. In these circumstances, the letter is usually referred to by the older name Yest, and the descriptive names long E, or anchor E.

In Ukrainian, Є/є commonly represents the sound /je/ or /jɛ/, like the pronunciation of ⟨ye⟩ in "yes". (See Usage for more detail.)

Ukrainian Ye is romanized as ⟨je⟩ or ⟨e⟩. See Scientific transliteration of Cyrillic.