[llvm] [MC][RISCV] Add assembly syntax highlighting for RISCV (PR #65853)

[Jessica Clarke via llvm-commits]

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@@ -256,6 +278,8 @@ void RISCVInstPrinter::printSpimm(const MCInst *MI, unsigned OpNo,
   if (Opcode == RISCV::CM_PUSH)
     Spimm = -Spimm;
 
+  // RAII guard for ANSI color escape sequences
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jrtc27 wrote:

I don't understand. Why is RAII relevant here? Surely markup isn't side-effecting and is just a filter on the ostream?

https://github.com/llvm/llvm-project/pull/65853