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From: eijkhout@s41.csrd.uiuc.edu (Victor Eijkhout)
Newsgroups: comp.text.tex
Subject: Re: Help with verbatim in TeX
Message-ID: <1990Nov20.004749.24372@csrd.uiuc.edu>
Date: 20 Nov 90 00:47:49 GMT
References: <0093FF01.F0DC8360@QMD.PHY.NIST.GOV> <1990Nov19.181256.6683@jato.jpl.nasa.gov>
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dundas@granite.jpl.nasa.gov (John Dundas) writes:

>(Warning: novice user ahead...)  

Nothing to be ashamed of. And this is a tricky subject you're attacking.

>I am using the following macros in order
>to typeset code listings (taken from WEB book, p. 243):

[verbatim macros deleted]

>These macros generally work well except that blank lines are discarded.
>Can anyone suggest what to change to make blank lines appear as intended?

What happens is that a blank line generates a par, which doesn't do
anything as the previous line end was also a \par.
The remedy is to redefine \obeylines slightly:
somewhere in \obeylines it says
\def^^M{\par}
Change this into
\def^^M{\par\leavevmode}

>Thanks in advance, please reply directly.

Oops.

>John Dundas
>dundas@sapphire.jpl.nasa.gov

Victor.