https://bugs.documentfoundation.org/show_bug.cgi?id=169103
--- Comment #2 from Piotr Osada <[email protected]> --- Additionally, Unicode includes superscript and subscript letters (beyond just numbers) that are commonly used in scientific notation, phonetics (IPA), and mathematical expressions. These should also be included in character normalization. MOTIVATION: Scientific documents often mix formatting styles from different sources (manual typing, AI-generated content, copy-paste from different software), making it difficult to search for the same chemical formula or physical quantity written in different ways. BASIC EXAMPLES: - Searching for "xn" should match: xⁿ, xₙ - Searching for "H2O" should match: H₂O - Searching for "CO2" should match: CO₂, CO² - Searching for "Ca2+" should match: Ca²⁺ - Searching for "Cp" should match: Cₚ USE CASES IN SCIENTIFIC DOCUMENTS: PHYSICS Mechanics: aₜ, aₙ — tangential and normal acceleration σₓₓ, τₓᵧ — stress tensor components Thermodynamics: Cᵥ, Cₚ — heat capacity at constant volume/pressure CHEMISTRY Ca²⁺ — calcium cation [H₃O⁺] — hydronium ion MATERIAL SCIENCE Crystal Structure: t-ZrO₂ — tetragonal zirconia α-Fe, γ-Fe — iron crystal phases Material stoichiometry: ZrO₂₋ₓ — zirconium oxide (non-stoichiometric compound) SUPERSCRIPT LETTERS (MODIFIERS) Code Char Name U+1D43 ᵃ Modifier Letter Small A U+1D47 ᵇ Modifier Letter Small B U+1D9C ᶜ Modifier Letter Small C U+1D48 ᵈ Modifier Letter Small D U+1D49 ᵉ Modifier Letter Small E U+1DA0 ᶠ Modifier Letter Small F U+1D4D ᵍ Modifier Letter Small G U+02B0 ʰ Modifier Letter Small H U+2071 ⁱ Superscript Latin Small Letter I U+02B2 ʲ Modifier Letter Small J U+1D4F ᵏ Modifier Letter Small K U+02E1 ˡ Modifier Letter Small L U+1D50 ᵐ Modifier Letter Small M U+207F ⁿ Superscript Latin Small Letter N U+1D52 ᵒ Modifier Letter Small O U+1D56 ᵖ Modifier Letter Small P U+02B3 ʳ Modifier Letter Small R U+02E2 ˢ Modifier Letter Small S U+1D57 ᵗ Modifier Letter Small T U+1D58 ᵘ Modifier Letter Small U U+1D5B ᵛ Modifier Letter Small V U+02B7 ʷ Modifier Letter Small W U+02E3 ˣ Modifier Letter Small X U+02B8 ʸ Modifier Letter Small Y U+1DBB ᶻ Modifier Letter Small Z SUPERSCRIPT CAPITALS Code Char Name U+1D2C ᴬ Modifier Letter Capital A U+1D2E ᴮ Modifier Letter Capital B U+1D30 ᴰ Modifier Letter Capital D U+1D31 ᴱ Modifier Letter Capital E U+1D33 ᴳ Modifier Letter Capital G U+1D34 ᴴ Modifier Letter Capital H U+1D35 ᴵ Modifier Letter Capital I U+1D36 ᴶ Modifier Letter Capital J U+1D37 ᴷ Modifier Letter Capital K U+1D38 ᴸ Modifier Letter Capital L U+1D39 ᴹ Modifier Letter Capital M U+1D3A ᴺ Modifier Letter Capital N U+1D3C ᴼ Modifier Letter Capital O U+1D3E ᴾ Modifier Letter Capital P U+1D3F ᴿ Modifier Letter Capital R U+1D40 ᵀ Modifier Letter Capital T U+1D41 ᵁ Modifier Letter Capital U U+1D42 ᵂ Modifier Letter Capital W SUBSCRIPT LETTERS Code Char Name U+2090 ₐ Latin Subscript Small Letter A U+2091 ₑ Latin Subscript Small Letter E U+2095 ₕ Latin Subscript Small Letter H U+1D62 ᵢ Latin Subscript Small Letter I U+2C7C ⱼ Latin Subscript Small Letter J U+2096 ₖ Latin Subscript Small Letter K U+2097 ₗ Latin Subscript Small Letter L U+2098 ₘ Latin Subscript Small Letter M U+2099 ₙ Latin Subscript Small Letter N U+2092 ₒ Latin Subscript Small Letter O U+209A ₚ Latin Subscript Small Letter P U+1D63 ᵣ Latin Subscript Small Letter R U+209B ₛ Latin Subscript Small Letter S U+209C ₜ Latin Subscript Small Letter T U+1D64 ᵤ Latin Subscript Small Letter U U+1D65 ᵥ Latin Subscript Small Letter V U+2093 ₓ Latin Subscript Small Letter X GREEK SUBSCRIPTS Code Char Name U+1D66 ᵦ Greek Subscript Small Letter Beta U+1D67 ᵧ Greek Subscript Small Letter Gamma U+1D68 ᵨ Greek Subscript Small Letter Rho U+1D69 ᵩ Greek Subscript Small Letter Phi U+1D6A ᵪ Greek Subscript Small Letter Chi [16] https://symbl.cc/en/collections/superscript-and-subscript-letters/ [17] https://en.wikipedia.org/wiki/Unicode_subscripts_and_superscripts -- You are receiving this mail because: You are the assignee for the bug.
