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[Henri Lesourd <address@hidden>]

Robert Lamar wrote:

> I seem to have found the problem: the plugin I am working on uses 
> `path-assign', which was deprecated and removed at revision 1.18, 
> between versions 1.0.6.10 and 1.0.6.12.  What exactly did path-assign 
> do?  What sort of construct might replace it?
(path-assign $PATH $TREE) is a deprecated
function which was replacing the tree located
at the path $PATH by the tree $TREE.

It has been superseded by (tree-assign $OLDTREE $NEWTREE),
which replaces the tree $OLDTREE by the tree $NEWTREE
in the document.

It works correctly *only* if the tree $OLDTREE is located
inside a document : otherwise, the value $OLDTREE is not
replaced in the parent trees containing $OLDTREE.

On the other hand, if the tree $OLDTREE is located inside
a document, it has the property of having only one parent,
and this parent is updated correctly when you use (tree-assign).

One can implement (path-assign) as :
[[
(define (path-assign PATH TREE)
 (tree-assign (path->tree PATH) TREE))
]]

(it works only if the PATH is a valid
path, of course).