Normalize ℏ (\hslash) to ħ (\hbar) (JuliaLang/JuliaSyntax.jl#277)

See upstream PR #49559

Author: c42f

JuliaSyntax/src/literal_parsing.jl

@@ -333,7 +333,8 @@ function utf8proc_custom_func(codepoint::UInt32, ::Ptr{Cvoid})::UInt32
     codepoint == 0x00B5 ? 0x03BC :   # 'µ' => 'μ'
     codepoint == 0x00B7 ? 0x22C5 :   # '·' => '⋅'
     codepoint == 0x0387 ? 0x22C5 :   # '·' => '⋅'
-    codepoint == 0x2212 ? 0x002D :   # '−' => '-'
+    codepoint == 0x2212 ? 0x002D :   # '−' (\minus) => '-'
+    codepoint == 0x210F ? 0x0127 :   # 'ℏ' (\hslash) => 'ħ' \hbar
     codepoint)
 end
 

JuliaSyntax/test/literal_parsing.jl

@@ -248,4 +248,8 @@ end
     # https://github.com/JuliaLang/julia/pull/42561
     @test JuliaSyntax.normalize_identifier("julia\u025B\u00B5\u00B7\u0387\u2212") ==
         "julia\u03B5\u03BC\u22C5\u22C5\u002D"
+
+    # https://github.com/JuliaLang/julia/issues/48870
+    # ℏ -> ħ
+    @test JuliaSyntax.normalize_identifier("\u210f") == "\u0127"
 end