Nathan Sidwell <nathan_at_[hidden]> writes:

> Are you claiming they are not source files?
>
> 'The text of the program is kept in units called source files in this
> document.' [lex]/1

No, but by this definition header files are also source files. Which
means we already have a precedent of assigning different extensions
to different types of source files. Why not use the header's extension
then?