groff -ms and eqn

groff -ms and eqn

[r.d.go...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org]

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The pandoc output to groff -ms is really very good. There's one problem. 
The eqn delimiters (which are @@) are not specified in the -ms output file. 
This means that if I have a file rubbish.md with math in it, I cannot 
convert to pdf simply with:

pandoc -t ms rubbish.md | groff -ms -e -Tpdf > rubbish.pdf

but need to invoke eqn separately, specifying the delimiters:

pandoc -t ms rubbish.md | eqn -d@@ | groff -ms -Tpdf > rubbish.pdf

That becomes even more irksome if there is a table in my markdown file, 
because tbl has to be invoked before eqn, and I have to manually add it in 
the pipe, rather than let groff sort out the order of the preprocessors.

I'm not sure what the solution is. The ms file with math in it needs these 
lines at the top:

.EQ
delim @@
.EN

The problem is that if that is placed in every ms file, then if it does not 
have any math and is *not *preprocessed with eqn, the words delim @@ are 
printed verbatim.

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Re: groff -ms and eqn

[John MacFarlane]

Are you using the -s (--standalone) option?
If you do, and if your document contains math, then

.EQ
delim @@
.EN

should be automatically inserted. It's part of the default
template.  Example:

pandoc -s -t ms
$e^2$
^D
...first part omitted...
.hy
.EQ
delim @@
.EN
.\" 1 column (use .2C for two column)
.1C
.LP
@e sup 2@
.pdfsync

Re: groff -ms and eqn

[r.d.go...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org]

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Thank you - I didn't know that option! R.

On Monday, February 1, 2021 at 11:58:30 PM UTC-5 John MacFarlane wrote:

>
> Are you using the -s (--standalone) option?
> If you do, and if your document contains math, then
>
> .EQ
> delim @@
> .EN
>
> should be automatically inserted. It's part of the default
> template. Example:
>
> pandoc -s -t ms
> $e^2$
> ^D
> ...first part omitted...
> .hy
> .EQ
> delim @@
> .EN
> .\" 1 column (use .2C for two column)
> .1C
> .LP
> @e sup 2@
> .pdfsync
>
>
>

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