On 11/3/15, Michael Felt <aixto...@gmail.com> wrote: > I suppose in a GNU only world, this would be okay. However, my man page for > ar still says: > > -u > Copies only files that have been changed since they were last > copied (see the -r flag discussed previously). > > while the option -D is not found. [...] > so, I think adding -D as a default will break "all" for me.
The patch actually just removes 'u' from the default; it does not add any nonstandard options. The issue is that some GNU systems are shipping versions of 'ar' which enable the (GNU-specific) 'D' option by default, which causes the 'u' option to print a warning and have no other effect.
