feat: add default_value_os_t

[omjadas]

Add default_value_os_t attribute

The order of suffixes allows us to preserve the original builder function name.

This is a part of #2813

[epage]

The only thing I'm unsure of is which suffix (_t or _os) should be last.

Mind sharing your reasoning for which you chose?

[omjadas]

The only thing I'm unsure of is which suffix (_t or _os) should be last.

Mind sharing your reasoning for which you chose?

I chose default_value_t_os in order to be consistent with default_value_if_os and default_value_ifs_os, where _os comes last.

[epage]

Thanks for the explanation!

I don't think precedence carries much weight though because this is a new suffix that is similar to _os.

In giving time to mull over this, I think we should swap this and always have _t at the end. My reason is so we preserve the original builder method name for easier searching, rather than splitting the method name in two. This means derive-specific suffixes should always come last.

[epage]

v3.0.12 is released with this change!