Re: delete-trailing-whitespace and binary files

[storm@cua.dk (Kim F. Storm)]

Richard Stallman <rms@gnu.org> writes:

>     1) If file is binary (how to check that?), don't delete whitespace
>        when run from a hook (how to check that?).
>
> That is so complex that I think it would be undesirable.
>
>     2) Don't consider NUL to be whitespace.
>
> That seems like a good idea.  Is there EVER a reason for
> delete-trailing-whitespace to delete NUL?

If the syntax table says that NUL is whitespace, I guess it should do it...


I looked a little further at this.

Opening file spook.lines selects text-mode.

text-mode is derived from Fundamental-mode, which has
a somewhat peculiar (IMO) interpretation of "whitespace":

C-@ .. SPC	  	which means: whitespace
DEL .. ÿ	  	which means: whitespace
   		  	which means: whitespace
      .. ​	  	which means: whitespace
<<default>>	  	which means: whitespace


So delete-trailing-whitespace just does what it's supposed to do.

Is there a better major-mode to choose for spook.lines (e.g. via a
file local variable)?

-- 
Kim F. Storm <storm@cua.dk> http://www.cua.dk