Re: [jed-users] rm trailing whitespace on write

["Peter D. Gray" <pdg@xxxxxxxxxx>]

Many thanks guys. I will experiment with both these funtions.


On Thu, Feb 16, 2017 at 11:51:45AM +0100, Guenter Milde wrote:
> On 16.02.17, Bernhard Seckinger wrote:
> > Hi pdg,
> 
> > > Anybody have a mechanism to remove trailing whitespace
> > > on buffer write (or read I guess).
> 
> > I'm not sure, if this is, what you're looking for, but I use the following in
> > my .jedrc to remove trailing whitespaces, whenever I save the buffer:
> 
> > define my_trim_buffer()
> > {
> >     push_spot();
> >     while (up_1()) { eol_trim(); bol(); }
> >     pop_spot();
> >     push_spot();
> >     while (down_1()) { eol_trim(); bol(); }
> >     pop_spot();
> > }
> 
> > add_to_hook("_jed_save_buffer_before_hooks",&my_trim_buffer);
> 
> > Note, that it does not remove empty lines at the end of the buffer.
> 
> Here is another variant, that also removes trailing multiple empty lines
> (but leaves the newline char on the last line intact):
> 
> % Trim buffer but keep multiple blank lines:
> public define trim_buffer_lines()
> {
>    % remove whitespace at end of lines
>    push_spot_bob();
>    do {
>       eol_trim();
>    }
>    while (down_1());
>    % remove empty lines at end of buffer
>    eob();
>    do {
>       go_left_1();
>       if (bolp() and eolp())
> 	 del();
>    }
>    while (bolp());
> 
>    pop_spot();
>    !if (BATCH) message ("done.");
> }
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> 

Regards,
pdg
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