[Reduce-algebra-developers] IN_TEX questions

[martin g. <a.m...@ic...>]

while trying to use IN_TEX I came across the following questions

1. using OFF ECHO causes IN_TEX to ignore everything in the input file
  following the first \end{reduce}. If I use a $ terminator for the
  IN_TEX command, only the reduce output and nothing else is
  displayed. Since I would like to be able to display only the output
  and not the commands, how can I do this?

2. IN_TEX writes \begin{reduce} and \end{reduce} to the output LaTeX
  file which causes a fatal error when compiling the LaTex (TeX Live
  2023). If I write 

   \newenvironment{reduce}{}{}%

  before the \documentclass command the compilation works. I would
  expect that there is a definition of a reduce environment but 

   find Reduce-svn6658-src -iname '*.sty' -exec grep "newenv" {} \;

  returns only a definition 

   \newenvironment{describe}[1]{\par{\bf #1}\begin{indented}}{\end{indented}}

  for the three files:

   doc/misc/reduce.sty
   doc/primers/reduce.sty
   doc/util/reduce.sty

  Searching in *.tex finds many more but no 'reduce'. Does it exist?

3. Using IN_TEX always produces a 99 error, e.g.

   +++ error: (99 ("End-of-file read in file" "rlfi-01-src.tex")) (
   "End-of-file read in file" "rlfi-01-src.tex")

  even though I have ;end; at the end of the file. Is this expected?

I have compiled revision reduce 6658 (csl) from source on Slackware
(kernel 5.15.145).

Martin Gregory

Test program and LaTeX file:

--------------------rlfi-01.red-------------------------
load_package rlfi ;
out t ; % to drop rlfi preamble
q:=(y^2+2*y)^2/(2*a);
on latex, lasimp ;
out "rlfi-01.tex" ;
in_tex "rlfi-01-src.tex" ;
shut "rlfi-01.tex" ;
off latex ; % after shut to avoid writing \end{document}
;end;
--------------------rlfi-01-src.tex---------------------
\documentclass[11pt,a4paper]{article}
\usepackage[pdftex,bookmarks,colorlinks,linkcolor=blue]{hyperref}
\title{RLFI in file read by IN\_TEX}
\author{Martin Gregory}
\begin{document}
\maketitle
We define q as follows:

\begin{reduce}
 write q ;
\end{reduce}
\end{document}
;end;