Re: [Groff] a couple of problems with macro -me

[Robert Goulding]

On Jun 19, 2004, at 10:40 AM, Daniel Senderowicz wrote:

> Hi folks,
>
> I can't figure out how to solve these:
>
> 1) I'm trying to print a footer with "M - N" where 'M' is the
> chapter number (\n(ch) and 'N' is the page number (%). So I did:
>
> .fo ''\n(ch - %''
>
> and also tried with:
>
> .fo ''\\n(ch - %''
>
> and neither of them work. It prints "0 - N" where N is the
> correct page number but the 0 (zero) stays throughout the whole
> document even though I'm able to use \n(ch in different contexts.
> I did a dirty trick of writing the .fo request at the beginning
> of every chapter but I would like to know what I'm doing wrong.

I've had this problem (or something like it) before.  Either keep 
doubling the number of backslashes until it does work (I had to set up 
one document with \\\\\\\\n(ch !) or use the groff-extension escape \E; 
you should find that \En(ch interpolates the number register at just 
the right time.

> 2) In-line equations with delayed text is acting up. If I have a
> construct like:
>
> .(x
> This is the square root of pi $ sqrt pi $
> .)x
>
> then the printout at the end of the document gets messed up. I
> have the "delim $$" properly set up, although there are parts of
> the document in which I undefine and define again, but they are
> always defined when I construct either the lines above or when I
> do the .xp request.
> Any ideas? Thanks,
This does seem to be a real problem with -me.  Fortunately, a little 
experimentation suggests a workaround.

This works perfectly

.EQ
delim $$
.EN
.ds rtpi $sqrt pi$
.lp
This is some text.
.(x
This is the square root of pi \*[rtpi].
.)x
This is text again.
.bp
.xp