mailing-list for TeXmacs Users

[Lionel Elie Mamane <address@hidden>]

On Tue, Feb 28, 2006 at 09:35:25PM +0100, Henri Lesourd wrote:
> Lionel Elie Mamane wrote:
> 
> >Hi,
> >
> >What is the scheme function foo such that (foo s) is the TeXmacs tree
> >(document snippet) whose rendering is s? I tried string->tree, but
> >this _interprets_ the string. verbatim->tree doesn't do what I want
> >either. I grepped the source for "string->" and "->tree" without
> >success.
> >
> >In particular:
> >
> >- (foo "<gtr>") is the tree whose .tm serialisation is:
> >  \<less\>gtr\<gtr\> .
> >
> > 
> >
> Uh, that is not clear. As for me, I get :
> [[
>   (string->tree "<gtr>") or
>   (string->tree ">")
>   =>
>      '>'
> ]]

Notice that the tree produced by (string->tree "<gtr>") and
(string->tree ">") is not the same one. Save your file and look at it
in less (or more or emacs or ...). One is \>, the other \<gtr\>.

Try with (string->tree "<"). It gives an _invalid_ tree.

> isn't it what you want ?

No. I want (foo "<gtr>") to be the tree that gets serialized as
\<less\>gtr\<gtr\> in a .tm file. This means the '<' symbol, followed
by the letters g, t and r and then the '>' symbol. Not the '>' symbol
alone.

> Or rather would you like to get :
> [[
>   (string->tree ">")
>   =>
>      '\<gtr\>'
> ]]

Yes, exactly.

> In my own case, I got fed up with these escaping problems in the
> strings, thus I finally decided to do my escapings myself.

So you are saying that this function is _not_ part of TeXmacs?

> The following ones work well for me :

Thanks. Will try them out.

-- 
Lionel