fdiagnostics-color=never does not disable color for some diagnostics

[Jason Merrill]

On 09/22/2015 04:23 PM, Manuel López-Ibáñez wrote:
> +    error_at (loc, "-Werror=%s: no option -%s", arg, new_option);
> +  else if (!(cl_options[option_index].flags & CL_WARNING))
> +    error_at (loc, "-Werror=%s: -%s is not an option that controls warnings",

Won't these incorrectly start with "-Werror=Wsomething:" rather than the 
"-Werror=something" that the user wrote?

Jason