On 2017-04-25 12:36:01 -0700, Kevin J. McCarthy wrote:
> On Tue, Apr 25, 2017 at 12:49:05PM -0500, Derek Martin wrote:
> > On Mon, Apr 24, 2017 at 11:33:20AM +0200, Vincent Lefevre wrote:
> > > On 2017-04-23 09:59:33 -0500, Derek Martin wrote:
> > > > Although, I don't really get why Mutt needs a feature for this, when
> > > > you can just set the environment variables in... the environment.
> > > > Before starting Mutt.
> > >
> > > This is not just possible for all of them. One problem is COLUMNS,
> > > which may be needed for filters not attached to the terminal.
> >
> > I don't get it... I'm not sure how COLUMNS is even useful to filters
> > that aren't attached to the terminal.
The output of a filter will be displayed on the terminal, so that
some filters (those that do formatting themselves, such as lynx)
may need to know the width of the pager.
> > And if they are, they should be able to get the terminal's
> > dimensions.
Mailcap filters are not attached to the terminal. I don't know whether
this can be regarded as a bug in Mutt, but anyway:
* filters are just filters and are not intended to interact with
the terminal (so, the current behavior is safer);
* programs that are intended to work as filters won't try to get
information from the terminal, so that they would need a wrapper
to get the width and set up $COLUMNS, which is not nice for the
end user.
> But, for the sake of argument:
>
> This is helpful when using the sidebar. In this case, Mutt sets COLUMNS
> to the width of the pager area, not the whole window. I have in my
> .mailcap :
> text/html; lynx -dump -width ${COLUMNS:-80} %s; nametemplate=%s.html;
> copiousoutput
> which looks much nicer.
This is useful even without using the sidebar. If one uses a terminal
larger than 80 columns, one may want an output on more than 80 columns
(80 columns is the default width used by lynx -dump, as documented).
--
Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
