Re: [PATCH 3/3] Replace TUI's select_frame hook (PR tui/13378)

[Patrick Palka <patrick@parcs.ath.cx>]

On Tue, Jun 30, 2015 at 10:54 AM, Patrick Palka <patrick@parcs.ath.cx> wrote:
> On Tue, Jun 30, 2015 at 10:08 AM, Pedro Alves <palves@redhat.com> wrote:
>> On 06/30/2015 01:37 PM, Patrick Palka wrote:
>>> This version adds a tui_normal_stop observer in place of augmenting the
>>> tui_on_sync_execution_done observer.  And tui_refresh_frame_and_register_information
>>> can now be made a static function.
>>>
>>> The observer takes a print_frame parameter that is supposed to inform us
>>> whether the frame should be printed.  This boolean seems to only be true for
>>
>> s/only be true/only be false/
>>
>>> when the inferior has exited.  Since tui_refresh_frame_and_register_information
>>> already handles this case by checking has_stack_frames() this patch elects to
>>> ignore this parameter in the observer.
>>
>> This is OK.  I'll take a look at patch 2 soon.
>>
>> Did you find that we still need deprecated_print_frame_info_listing_hook?
>
> It still seems to be "necessary" -- at least, I can't outright remove it.
>
> The only caller of deprecated_print_frame_info_listing_hook is in
> print_frame_info and its use looks like this:
>
>  if (deprecated_print_frame_info_listing_hook)
>     (*deprecated_print_frame_info_listing_hook) (...);
>  else
>    { ... other code ... }
>
> If I remove the hook by replacing the above code with
>
>   { ... other code ... }
>
> Then a regression occurs: the TUI decides to make sure that the
> currently executing line always sits at the top of the window instead
> of only scrolling the screen when the currently executing line is not
> invisible.

I meant to say not _visible_.