Unicode

There are several reasons why someone might choose to use Unicode code points in regex patterns:

1. Latin Letter 'A' and Greek Letter 'Alpha'
   • Latin Capital Letter A: A (U+0041)
   • Greek Capital Letter Alpha: Α (U+0391)
2. Latin Letter 'B' and Greek Letter 'Beta'
   • Latin Capital Letter B: B (U+0042)
   • Greek Capital Letter Beta: Β (U+0392)
3. Latin Letter 'E' and Greek Letter 'Epsilon'
   • Latin Capital Letter E: E (U+0045)
   • Greek Capital Letter Epsilon: Ε (U+0395)
4. Latin Letter 'I' and Greek Letter 'Iota'
   • Latin Capital Letter I: I (U+0049)
   • Greek Capital Letter Iota: Ι (U+0399)
5. Latin Letter 'O' and Greek Letter 'Omicron'
   • Latin Capital Letter O: O (U+004F)
   • Greek Capital Letter Omicron: Ο (U+039F)
6. Latin Letter 'P' and Greek Letter 'Rho'
   • Latin Capital Letter P: P (U+0050)
   • Greek Capital Letter Rho: Ρ (U+03A1)
7. Latin Letter 'X' and Greek Letter 'Chi'
   • Latin Capital Letter X: X (U+0058)
   • Greek Capital Letter Chi: Χ (U+03A7)
8. Latin Letter 'Y' and Greek Letter 'Upsilon'
   • Latin Capital Letter Y: Y (U+0059)
   • Greek Capital Letter Upsilon: Υ (U+03A5)
9. Latin Letter 'C' and Cyrillic Letter 'Es'
   • Latin Capital Letter C: C (U+0043)
   • Cyrillic Capital Letter Es: С (U+0421)
10. Latin Letter 'a' and Cyrillic Letter 'a'
    • Latin Small Letter a: a (U+0061)
    • Cyrillic Small Letter a: а (U+0430)
11. Latin Letter 'e' and Cyrillic Letter 'e'
    • Latin Small Letter e: e (U+0065)
    • Cyrillic Small Letter e: е (U+0435)
12. Latin Letter 'o' and Cyrillic Letter 'o'
    • Latin Small Letter o: o (U+006F)
    • Cyrillic Small Letter o: о (U+043E)
13. Latin Letter 'p' and Cyrillic Letter 'er'
    • Latin Small Letter p: p (U+0070)
    • Cyrillic Small Letter er: р (U+0440)
14. Latin Letter 'y' and Cyrillic Letter 'u'
    • Latin Small Letter y: y (U+0079)
    • Cyrillic Small Letter u: у (U+0443)