Great news! I see the FLAGS_REVERSE in my checkout, but no recent commits. Is 
https://github.com/gphoto/gphoto2 the location of your branch?

Thanks,
Adam

On Fri, May 19, 2023, at 05:17, Marcus Meissner wrote:
> On Thu, May 18, 2023 at 02:51:00PM -0400, Adam Chasen via Gphoto-devel wrote:
>> I would like to create a patch which would reverse the sort order of 
>> "--get-all-files" (with --skip existing). In the case of my Sony RX100M3, 
>> the files are organized by date and are sorted from oldest to newest. I 
>> would prefer newest files to be pulled down first. The speed of PTPIP on 
>> this camera is pretty bad taking several seconds for each directory listing. 
>> 
>> I found the functions in libgphoto2 which are responsible for listing the 
>> directories, but am struggling to trace the execution of gphoto CLI with 
>> "--get-all-files" to the sequence of "list all folders" (and skip if 
>> present). I believe it is similar to the "-l" call which starts with listing 
>> of the root and recursively lists all folders.
>> 
>> Any pointers on following the code from execution to downloading for a call 
>> with `--get-all-files`?
>> 
>> Aside, an option to stop syncing when we run in to a "date folder" where 
>> everything is "skipped" would be handy.
>> 
>> Another aside, the camera communication stability isn't great and often 
>> locks up before it even has a chance to list the 100 directories.
>
> for_each_file_in_range is the function doing that.
>
> Someone seems to have added a REVERSE flag there already, but not
> configured it to be set anywhere.
>
> I just added code to gphoto2 master  to add a --reverse option.
>
> Can you try?
>
> Ciao, Marcus


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