message: Allow spaces in comments
diff: @@ -112,7 +112,7 @@ WidthSpec: WidthSpec =
  r"[[:digit:]]+" => WidthSpec(str_to_u16(<>, 10));
  Comment: String =
  - <s:r"\{[^}\s]*\}"> => s[1..s.len()-1].to_owned();
  + <s:r"\{[^}\n]*\}"> => s[1..s.len()-1].to_owned();
  PhysReg: PhysReg =
  r"\$[a-z_][a-z0-9_]*" => PhysReg(<>[1..].to_owned());
  