Re: [Texmacs-dev] Literate Programming in TeXmacs?

[Ralf Hemmecke]

On 05/21/2007 10:20 PM, Todd Wilson wrote:
> Felix Breuer wrote:
> > A simple implementation that serves both purposes might look as
> > follows. Suppose snippets of code in the document are wrapped in an
> > environment like
> >
> >   <lp-code|label|body>
> >
> > where label is an arbitrary string that marks which snippets belong
> > together and body is an arbitrary TeXmacs tree that is "the code".
>
> A slightly more general but useful extension of this would be to use two 
> labels, one for "import" and one for "export".  This would allow you to 
> have multiple files/sessions that shared initial segments (i.e., 
> file/session trees).  For example,
>
>     <lp-code||common|body0>
>     <lp-code|common|branch1|body1>
>     <lp-code|common|branch2|body2>
>
> would create two files/sessions with bodies body0+body1 and body0+body2. 
> This would be more in line with languages that have the means to do 
> #include's, and would also make possible a kind of "exploratory" 
> session, where different approaches to the main line can be highlighted 
> and developed without interfering with the main-line development.
>
> Todd Wilson

Let me translate what you want into noweb syntax.

%---BEGIN file.nw
blah blah blah

<<my imports>>=
some import statements go here
@

more blah blah

<<foo>>=
<<my imports>>
more code
@

even more blah blah

<<bar>>=
<<my imports>>
some other code
@

%---END file.nw

Here is what you get if you use notangle.

>notangle -Rfoo file.nw
some import statements go here
more code
>notangle -Rbar file.nw
some import statements go here
some other code
>


Do you see the difference to your two argument "lp-code"? Or am I 
missing your point?

Ralf