Broken source view with Pygments and non-UTF-8 encoded source

[Simon Sobisch]

Hi Andrew,
just leaving a friendly ping on (note: I may missed the thread this was 
posted to GDB patches, then please be so kind and drop a reference).

Thank you for working on this and other pieces of GDB!
Simon

> * Andrew Burgess via Gdb <gdb@sourceware.org> [2021-11-26 11:16:21 +0000]:
> 
> * Simon Sobisch via Gdb <gdb@sourceware.org> [2021-11-25 20:28:18 +0100]:
>
>> I _really_ like the Pygments option, but it sadly doesn't work when the
>> source code as invalid UTF8 data in it.
>> As soon as this is the case "list" does not show a nice highlighted code any
>> more but instead Python Exception is raised (UnicodeDecodeError) and then
>> non-colored lines are shown.
>>
>> This is especially bad when you "step" through the code because you get the
>> python exception for every line.
> 
> I figured it out.  I have a fix which I'll post to gdb-patches shortly.
> 
> Thanks,
> Andrew