I forgot to apply the new trick I learned to
gdb-store-window-configuration. The trick makes file writing cleaner. This
is the store-window patch with that trick applied
Now the following code is used instead of find-file and insert.

    (with-temp-buffer
      (prin1 window-config (current-buffer))
      (write-file file t))

Yuan

On Thu, Jan 16, 2020 at 7:38 PM Yuan Fu <casouri@gmail.com> wrote:

> Here is an updated patch for store-window feature. I fixed some problem of
> the last one and added some new features. With this patch, you can
>
> 1. store your window configuration to a file, and load it back in a gdb
> session, and
> 2. set a default window config file to be loaded on gdb startup.
> 3. Now gdb preserves the window configuration you had before starting gdb
>
> More about 3.: currently when gdb quits, it leaves you with two windows,
> one in gdb comint buffer and one in source buffer, regardless of what you
> had before staring gdb. The third commit in the patch makes gdb restore the
> old window configuration you had before staring gdb.
>
> I also attached my window configuration file as default-rearrange.
>
> Yuan
>
>
> On Thu, Jan 16, 2020 at 10:04 AM Yuan Fu <casouri@gmail.com> wrote:
>
>>
>> > I'm back working on gdb. This time I fixed a issue where gdb opens more
>>> than one window to display source
>>> > code. By the design of gdb-mi, it should only have one source window.
>>>
>>> Thanks, can you show a use case where such a problem happens?
>>>
>>
>> Yes, basically any program with more than one source file and a large
>> screen (display-buffer will reuse window if there aren't enough space).
>>
>> A minimal setup:
>>
>> a.c:
>>
>> int f1(int a) {
>>     return a + 1;
>> }
>>
>> b.c:
>>
>> #include "a.c"
>>
>> int main() {
>>     int b = f1(1);
>>     int c = 0;
>>     return b + c;
>> }
>>
>> Steps:
>> - M-x gdb
>> - b main
>> - r
>> - s (many times)
>>
>> And when you step into f1 which is in a.c, gdb opens another window to
>> display it (again, if your screen is large enough).
>>
>> BTW, I say "by design gdb uses a single source window" because
>> gdb-display-source-window is written that way.
>>
>> Yuan
>>
>