Ingvar Stepanyan

> but the [gphoto2-port-info-list.c](https://github.com/gphoto/libgphoto2/pull/855/files#diff-c07bdc24c808b786caeca4d4baa61fe4c901a50d5e44e2fc3850f48a7746a7e6) might warrant further look as it actually used _GNU_SOURCE before this change and maybe calls something different. Ah this change is just due to usages of...

As for Toshiba file, looking at assembly diff, it just seems that a lot of addresses have shifted, but no meaningful changes otherwise: 

Ah the addresses shift due to usleep:  I just checked, if I comment out the 2 `usleep` calls, both object files before and after are identical. Since we don't...

> i have autoconf 2.71 on my buildsystem at least and would not mind this change, it seems to be a good cleanup FWIW I've already switched to _DEFAULT_SOURCE which...

That's... a lot of questions about a small edit :) I'm happy to revert the `_DEFAULT_SOURCE` change, the only reason I introduced it is because you said you were concerned...

I'd still appreciate answers to my questions about regex stuff above though. I've already investigated all the differences as originally requested, and that's the only one that's left under question.

> I'm happy to revert the `_DEFAULT_SOURCE` change, the only reason I introduced it is because you said you were concerned about `AC_USE_SYSTEM_EXTENSIONS` on old autoconf. > > Sounds like...

> These days though, it might be possible/reasonable to use slightly less ancient build tools these days. That would be wonderful. Especially if it also means we can use various...

> * but does not ensure that `include "config.h"` is actually present Oh good catch!

Haha, circle has closed :) (I didn't see the original discussion; sorry @sebmck)