Consider the following dummy code in Ada:

    procedure P is
    begin
       null;
    end P;

Compile it using:

    % gnatmake -g p

Then try to insert a breakpoint on a given task, but with the wrong capitalization for the "task" keyword; we get:

    % gdb p
    (gdb) start
    (gdb) b *p'address TASK 2
    Garbage 2 at end of command

The error message should say that `TASK 2' is the garbage in question. I will submit a patch to fix this part soon.  But there is a second problem with similar symptoms.  Once my patch is applied, the following scenario still fails:

    (gdb) b *p'address TASK Task TasK 2
    Garbage `TasK 2' at end of command

... The quoted portion of the command is missing the first couple of invalid keywords.  The problem is different because it's not find_condition_and_thread that skips these keywords and ignores them, but something before that.

It's probably happening while in the linespec parser, but I don't know whether the linespec parser might rely on the language to find the end of the breakpoint location or not. To be investigated further...