[Dev-luatex] .BEILMOPS or how I stopped worrying and love Open Source

[Heiko Oberdiek]

On Thu, Dec 13, 2007 at 06:18:24PM +0100, David Kastrup wrote:

> Heiko Oberdiek <oberdiek at uni-freiburg.de> writes:
> 
> > On Thu, Dec 13, 2007 at 02:40:07PM +0100, Taco Hoekwater wrote:
> >
> >> General remark: suck attempts to squeeze tex input to behave
> >> like lua source code are hard to debug and even harder to
> >> predict. It is much less confusing if you create either an
> >> environment like
> >> 
> >>    \startluacode
> >>    ..
> >>    \stopluacode
> >> 
> >> with appropriate catcode changes, 
> >
> > And \endlinechar=10 \catcode10=12 to enable the Lua parser
> > seeing multiple lines instead of one merged huge line.
> 
> What's the beef with that?  Except inside of strings (where \n will work
> fine), the Lua parser does not consider line endings to be different
> from spaces.

\catcode`\{=1
\catcode`\}=2
\directlua0{
  do
    local foo
    error("Error in third line")
  end
}
\endlinechar=10 %
\directlua0{%
  do
    local foo
    error("Same line, but useful line number")
  end
}%
\endlinechar=13 %
\end

luatex --ini test
This is LuaTeX, Version snapshot-0.20.0-2007120612 (Web2C 7.5.6) (INITEX)
(test.tex
! LuaTeX error [string "luas[0]"]:1: Error in third line.
l.8 }
     
? 
! LuaTeX error [string "luas[0]"]:3: Same line, but useful line number.
l.15 }
      %
? 
 )
No pages of output.
Transcript written on test.log.

Yours sincerely
  Heiko <oberdiek at uni-freiburg.de>