Re: [Groff] PDF_IMAGE and MOM

[Ingo Schwarze]

Hi Dale,

Dale Snell wrote on Mon, Nov 03, 2014 at 02:21:09PM -0800:
> On Mon, 03 Nov 2014 21:23:32 +0000 Keith Marshall wrote:
>> On 03/11/14 20:16, Dale Snell wrote:
>>> On Mon, 03 Nov 2014 16:36:04 +0000 Ralph Corderoy wrote:

>>>> BTW, your mombog.mom had a blank line at the start and the comments
>>>> were lines starting `\#' rather than `.\#'.  One or the other might
>>>> have an affect on your attempt at A3 in mom, I don't know.

>>> "\#" is a _groff_ comment,

>> Yes, but it's explicitly a GNU troff extension to standard troff
>> grammar; it may not produce the desired effect, were you to process
>> your input through any other troff implementation.

> True.  I know it's a GNU extension, but I wasn't considering the
> use of \# in a non-GNU [nt]roff.  I suspect it would result in an
> error message.  I certainly hope so, anyway.

Hope again:

   $ cat testfile
  first line \# comment
  .br
  second line

   $ /usr/local/bin/groff -Tascii testfile
  first line .br second line

   $ /usr/local/heirloom-doctools/bin/nroff testfile
  first line .br second line
  # also documented in the Heirloom Nroff/Troff User Manual
  # Heirloom added quite some GNU compat in the past, in general

   $ /usr/local/plan9/bin/nroff testfile
  first line # comment
  second line

It's hard to add something as fundamental as comment syntax
in an afterthought without breaking older tools.

It *is* nice that such compat testing has become so easy with
the ready made ports we have around (plan9 is already in the
OpenBSD ports tree, and the upcoming Heirloom and GNU troff
releases will be committed as soon as they are officially
released next week or so, i already have them tested and 
installed locally :).

Yours,
  Ingo