Split range that has no length or slice?

[Spacen Jasset via Digitalmars-d-learn]

On Monday, 9 November 2015 at 14:58:19 UTC, Adam D. Ruppe wrote:
> File has a .byLine and .byLineCopy method you could use to just 
> get lines from it.

Ah yes. but unfortunately I don't want to do that. I want to pass 
a range into my print function. i.e. Sometimes it may not be a 
File, it might be from a string.

Looks like it's not possible without adaptor code. I would 
suggest File should have a range function on it to return a 
range, for that matter byLine and byChunk probably shouldn't even 
be associated with file at all IMHO.