U+01DF "ǟ" Latin Small Letter A with Diaeresis and Macron Unicode Character
U+01DF "ǟ" Latin Small Letter A with Diaeresis and Macron is a composite glyph used primarily in the transliteration and scholarly transcription of certain languages, such as Livonian and occasionally in the romanization of other languages where vowel length and umlaut distinctions are necessary. It combines a standard lowercase 'a' with a diaeresis, indicating a fronted or modified vowel quality, and a macron above it, marking the vowel as long in duration. This character ensures precise phonetic representation in linguistic texts, particularly for Baltic and Finno-Ugric language studies, where both vowel length and quality are phonemic. It is encoded as a precomposed letter in the Latin Extended-A block of Unicode, allowing for consistent digital display and data exchange without the need for combining diacritical marks.
General Properties
| Code Point | U+01DF |
| Version Added | 1.1 |
| Name | Latin Small Letter A with Diaeresis and Macron |
| Unicode 1.0 Name | Latin Small Letter A Diaeresis Macron |
| Block | Latin Extended-B |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "ä" U+00E4 Latin Small Letter A with Diaeresis "̄" U+0304 Combining Macron |
Encodings
| HTML Decimal Encoding | ǟ |
| HTML Hex Encoding | ǟ |
| UTF-8 Encoding | 0xC7 0x9F |
| UTF-16 Encoding | 0x01DF |
| UTF-32 Encoding | 0x000001DF |
| C/C++/Java Escape | \u01df |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ǟ" U+01DE Latin Capital Letter A with Diaeresis and Macron |
| Simple Titlecase Code Point | "Ǟ" U+01DE Latin Capital Letter A with Diaeresis and Macron |
| Uppercase Code Point | "Ǟ" U+01DE Latin Capital Letter A with Diaeresis and Macron |
| Titlecase Code Point | "Ǟ" U+01DE Latin Capital Letter A with Diaeresis and Macron |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| Script | Latin |
| Script Extensions | Latin |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Lower |