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Added highlighting for C++23 size suffixes in integer literals #66

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Added highlighting for C++23 size suffixes in integer literals #66

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9 changes: 9 additions & 0 deletions syntax/cpp.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,15 @@ if !exists("cpp_no_cpp20")
syn keyword cppModule import module export
endif

" C++ 23 extensions
if !exists("cpp_no_cpp23")
syn match cppNumber display contained "\<0\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
syn match cppNumber display contained "\<[1-9]\('\=\d\+\)*\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
syn match cppNumber display contained "\<0\o\+\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
syn match cppNumber display contained "\<0b[01]\('\=[01]\+\)*\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
syn match cppNumber display contained "\<0x\x\('\=\x\+\)*\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
Comment on lines +107 to +108
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@e-kwsm e-kwsm Jan 6, 2026

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Suggested change
syn match cppNumber display contained "\<0b[01]\('\=[01]\+\)*\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
syn match cppNumber display contained "\<0x\x\('\=\x\+\)*\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
syn match cppNumber display contained "\<0[bB][01]\('\=[01]\+\)*\([Uu]\=[Zz]\|[Zz][Uu]\)\>"
syn match cppNumber display contained "\<0[xX]\x\('\=\x\+\)*\([Uu]\=[Zz]\|[Zz][Uu]\)\>"

endif

" The minimum and maximum operators in GNU C++
syn match cppMinMax "[<>]?"

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