Re: [PATCH] Remove gdb_stdtargerr

[Tom Tromey <tromey@adacore.com>]

Andrew> I tried to figure out what gdb_stdtarg and gdb_stdtargin are used for,
Andrew> and they both appear to be of pretty limited use.  I wonder what value
Andrew> they are actually adding?

For gdb_stdtargin, I don't know.

For gdb_stdtarg, I think this is one of those MI things that was never
fully implemented.  This stream does use a different prefix:

  mi->out = new mi_console_file (mi->raw_stdout, "~", '"');
  mi->err = new mi_console_file (mi->raw_stdout, "&", '"');
...
  mi->targ = new mi_console_file (mi->raw_stdout, "@", '"');

Based on the code I think the intent here was that target output would
be captured and sent to this MI stream, so the MI user could display it
differently if desired.

However, this was never really implemented, and then even "less
implemented" somehow because output packets were never updated for
non-stop.

This might change again when the "tty" patches land, because IIUC those
will make gdb intercept inferior I/O.

Tom