Re: Warn about long lines

[Alejandro Colomar]

Hi Ralph,

On 8/28/22 10:58, Ralph Corderoy wrote:
> Hi Alejandro,
>
> > > >      | sed 's/\x1b\[[^@-~]*[@-~]//g' \
> > >
> > > Out of interest, what's the sed(1) attempting to do?
> > > (I know what it's doing.)
> ...
> > I need to get rid of the highlighting.
>
> There's probably a better way; see grotty(1)'s -c option or GROFF_NO_SGR
> environment variable.  Piping grotty's output into ‘col -pbx’ may also
> be useful.

Changed; thanks!  BTW, I didn't add -p, since I don't think it's 
necessary.  Also, I added the variable for the output device, and set it 
to ascii, since utf8 produces multibyte sequences for boxed tables.  Now 
it only uses normal ASCII chars.


Cheers,

Alex

> > > No, the page dimensions, etc., are set within the troff source and
> > > it's up to that source to allow for external specification if
> > > required.  If a document is written without specifying them then the
> > > defaults apply and the user can override these by using one of the
> > > paper-size macro sets, e.g. ‘-ma4’ for A4 paper from groff's
> > > a4.tmac.
> > >
> > >       troff -ma4 letter.tr
> >
> > Ahh, it makes sense: normally documents are designed to be rendered in
> > a specific device and characteristics.
>
> Well, relative to the page, yes, but many documents needn't assume much
> about the output device or page size.  If you look at a4.tmac, for
> example, you'll see it just sets the page length to the paper size and
> the line length to the paper width less an inch margin both sides.
>
>      .pl 29.7c
>      .ll 21c-2i
>
> Boundaries of the text, like the header and footer position, are set
> relative to the edge of the paper: the header a distance from the top;
> the footer up from the bottom, not the top.  Thus the page length isn't
> of immediate concern.

--
Alejandro Colomar
<http://www.alejandro-colomar.es/>

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