[gccgo] Clean up error internationalization

[Ian Lance Taylor]

"Joseph S. Myers" <joseph@codesourcery.com> writes:

> On Tue, 16 Nov 2010, Ian Lance Taylor wrote:
>
>> Since I want to eventually make the Go frontend proper independent of
>> gcc, I'm going to have to work out how to handle the special gcc
>> formatting characters I am currently using, like %< and so forth.  I'm
>> not sure what the right approach is going to be there.  So this is an
>> interim patch along the way to gcc-independent error handling, which at
>> least gets things right for now.
>
> I don't see a particular problem with using those formats and defining 
> them to be part of the interface that the front end uses to any back end 
> it is hooked up to; it's a reasonably well-defined, reimplementable 
> interface.  It's the huge number of direct uses of "tree" interfaces in 
> the gofrontend/ directory I'd consider the most obvious major separation 
> issue; for a proper separation, I think everything that deals with trees 
> should be considered to be on the GCC side rather than part of the front 
> end proper (just as with the Ada front end).

Completely agreed about the tree code.  I'm working on moving them, but
doing it cleanly requires a bunch of plumbing.

Not sure how I feel about the formatting code.

Ian