André A. Gomes <firstname.lastname@example.org> writes:
> The project's documentation refers to headings and headlines as
> synonyms. Relying on a single definition would be beneficial.
Agreed. E.g. no more thinking waste about the question if it is
headline or heading?
> If I had to choose between the two, I'd go with heading.
> If the community finds this valuable, I could prepare a patch.
> There's a problem though. Function names would have to be changed,
> which would have to wait for version 10 otherwise we'd ruin backwards
It doesn't have to break things drastically. When such changes are made, you would define function aliases using `define-obsolete-function-alias'.
And then that obsoletion warning is removed after a few years.