Missing Ampersand in Code Blocks in ms Output

[tkurtbond]

Missing Ampersand in Code Blocks in ms Output

Using pandoc version

pandoc 2.9.2.1
Compiled with pandoc-types 1.20, texmath 0.12.0.1, skylighting 0.8.3.2

Here's some ReStructuredText (file ma.rst) input that has a code block
in it:

Missing Ampersand in Code Block -ms output
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Here's a code block containing ReStructuredText:

.. code::

   .. container:: for-format ms

      .. figure:: davesmapper-2017-04-10-caves-4-numbered.eps
         :alt: Map of Bandit's Cave

      Map of Bandit's Cave

   .. container:: for-format html latex context epub

      .. figure:: davesmapper-2017-04-10-caves-4-numbered.png
         :alt: Map of Bandit's Cave

         Map of Bandit's Cave

How's that look?

Using the command line pandoc -r rst -w ms -o ma-rst.ms ma.rst, here's
the ms output from it:

.SH 1
Missing Ampersand in Code Block -ms output
.pdfhref O 1 "Missing Ampersand in Code Block -ms output"
.pdfhref M "missing-ampersand-in-code-block--ms-output"
.LP
Here\[aq]s a code block containing ReStructuredText:
.IP
.nf
\f[C]
.. container:: for-format ms

   .. figure:: davesmapper-2017-04-10-caves-4-numbered.eps
      :alt: Map of Bandit\[aq]s Cave

   Map of Bandit\[aq]s Cave

\&.. container:: for-format html latex context epub

   .. figure:: davesmapper-2017-04-10-caves-4-numbered.png
      :alt: Map of Bandit\[aq]s Cave

      Map of Bandit\[aq]s Cave
\f[]
.fi
.LP
How\[aq]s that look?

See the first line that starts with .. container::? That line should
start with \& so it isn't interpreted as an roff command. As it
is, when you build the PDF output from output that line disappears
entirely with no warning to the user. (The default for roff
processors like groff is to ignore unknown commands.)

See the second line that starts with .. container::? That line
does start with \&. It makes it through fine. The other lines
whose first non-whitespace character is . make it through fine because
to make it a roff command the first character on the line has to be
a period.

Oddly enough, it doesn't happen with man output. Using the command
pandoc -r rst -w man -o ma-rst.man ma.rst here's the man output from
it:

.SH Missing Ampersand in Code Block -ms output
.PP
Here\[aq]s a code block containing ReStructuredText:
.IP
.nf
\f[C]
\&.. container:: for-format ms

   .. figure:: davesmapper-2017-04-10-caves-4-numbered.eps
      :alt: Map of Bandit\[aq]s Cave

   Map of Bandit\[aq]s Cave

\&.. container:: for-format html latex context epub

   .. figure:: davesmapper-2017-04-10-caves-4-numbered.png
      :alt: Map of Bandit\[aq]s Cave

      Map of Bandit\[aq]s Cave
\f[R]
.fi
.PP
How\[aq]s that look?

The first line that starts with .. container:: has a \& at the
beginning.

[jgm]

The man writer contains this code

  ((case T.uncons str of
    Just ('.',_) -> literal "\\&"
    _            -> mempty) <>

in the handler for CodeBlock. We need something like that in the ms writer.

[brisad]

Hi! I'd be happy to try to fix this one.