Re: extra space at the end of lines in source

[Tim Cross <theophilusx@gmail.com>]

Greg Minshall <minshall@umich.edu> writes:

> hi, Sebastien,
>
> thanks for the reply.  i remember that thread, but obviously i wasn't
> paying enough attention.
>
>> The downside is that, unless ~org-src--preserve-indentation~ is `t`,
>> when editing a src block, every empty line will be indented with
>> spaces (according to ~org-edit-src-content-indentation~ + the
>> indentation of the #+begin_src line). I think this is reasonable, but
>> perhaps some might disagree.
>
> indeed.  i disagree.  it's long-term emacs behavior to eliminate spaces
> at the end of lines, at least in programming modes.  i don't know what
> would be involved to keep the fix for the original problem (which i was
> also seeing), without adding these extra spaces.  but, i suspect it
> would be worth it, if feasible.
>

I'm not sure that is correct. Elimination of spaces at the end of lines
has always been something you could enable (either directly as a setting
in the mode, which might be enabled by default, or via a package like
whitespace.el. I think it would be going against Emacs philosophy to
have a mode automatically remove end of line spaces - this should be
something the user controls.

Of course, the converse is also true. It would be a mistake to have an
Emacs mode add additional whitespace at the end of lines which is not
requested by the user as well. This could also cause issues/conflicts
with packages like whitespace.el or diffs and VCS etc. It may also make
source blocks 'ugly' if you have your Emacs configured to show
additional whitespace at eol. 

-- 
Tim Cross