[lusingander]

$ sauva -o plain U+00BD

Identity
  Character: "\u00BD"
  Code Point: U+00BD
  Primary Name: VULGAR FRACTION ONE HALF
  Plane: 0 — Basic Multilingual Plane
  Block: Latin-1 Supplement

Classification
  General Category: No — Other Number
  Script: Common
  Age: 1.1
  East Asian Width: A — Ambiguous
  Bidi Class: ON — Other Neutral

Numeric
  Numeric Type: Numeric
  Numeric Value: 1/2

Encoding
  UTF-8: C2 BD
  UTF-16: 00BD
  HTML Decimal: ½
  HTML Hex: ½
  Rust char: '\u{BD}'
  Unicode Escape: \u00BD

Normalization
  Decomposition Type: Compatibility — fraction
  Decomposition:
    U+0031 DIGIT ONE
    U+2044 FRACTION SLASH
    U+0032 DIGIT TWO

Data
  Unicode Version: 17.0.0

Text Analysis
  CP: 1  UTF-8 Bytes: 2  UTF-16 Units: 1  GC: 1

Normalization Forms
  Form  State      CP  UTF-8 Bytes  UTF-16 Units  GC  Result
  NFC   unchanged  1   2            1             1   "\u00BD"
  NFD   unchanged  1   2            1             1   "\u00BD"
  NFKC  changed    3   5            3             3   "1\u20442"
  NFKD  changed    3   5            3             3   "1\u20442"

$ sauva -o plain --text 'Á😀'

Input: "A\u0301\uD83D\uDE00"
CP: 3  UTF-8 Bytes: 7  UTF-16 Units: 4  GC: 2

Positions: CP# / GC# are 1-based; byte / unit ranges are 0-based, end-exclusive.
CP#  GC#  Code Point  UTF-8 Bytes  UTF-16 Units  Name
1    1    U+0041      [0,1)        [0,1)         LATIN CAPITAL LETTER A
2    1    U+0301      [1,3)        [1,2)         COMBINING ACUTE ACCENT
3    2    U+1F600     [3,7)        [2,4)         GRINNING FACE

Normalization Forms
  Form  State      CP  UTF-8 Bytes  UTF-16 Units  GC  Result
  NFC   changed    2   6            3             2   "\u00C1\uD83D\uDE00"
  NFD   unchanged  3   7            4             2   "A\u0301\uD83D\uDE00"
  NFKC  changed    2   6            3             2   "\u00C1\uD83D\uDE00"
  NFKD  unchanged  3   7            4             2   "A\u0301\uD83D\uDE00"

Unicode Version: 17.0.0