Re: [PATCH] diff: setup pager only before diff contents truly ready

>> I am not all that convinced that sprinkling setup_diff_pager() call
>> all over the place is a good idea from longer-term maintainability's
>> sake to begin with, by the way.  What problem are we really solving?
>> Folks who run "git diff --no-such-option" see "behaviour inconsistency"?
>> All I see is "error: invalid option: --invalid" followed by a help message,
>> which is quite expected.
>
> I think it is just about not starting the pager when there is no useful
> output produced. Depending on your pager config, it is a little nicer if
> we avoid it for a one-liner error. E.g., I do not use "-F", so "git diff
> foo bar" drops me into the pager with a single error line.