[Solved] Snippet call nesting : how many levels ?

(...)
Is there some limit to the snippet call nesting ?

For the first time, I’m trying to nest 3 snippet calls and cannot get it work.

My first snippet call is [!LoadDocument!], which allows me to load the content of a document from a text file.
In this file is a [[Ditto &tpl=`my_chunk` ]] call and in the template chunk for Ditto contains this code :
<img src=`[!GetField? &docid=`29` &field=`image1` !]` />
(...)

After experimenting, I found out that nesting more than 2 levels for snippets is possible.

If the first snippet is called in uncachable mode [!...!], then the sublevels must be called in cachable mode.
This means not inverting bracket types for odd/even levels, but only after the 1st level.

In above example, I could solve the problem by calling GetField in cached mode [[...]], although it was itself called from the template specified to format the output of a cached Ditto call.

Hope that this can help others.

None of the search results seem to help, and even the examples I found don’t seem to work.

A few examples:

++++
[!Wayfinder? &startId=`[[UltimateParent]]`!]
++++
[!sanitise_string? &dirtyString=`[[UltimateParent]]`!]
---------
[!sanitise_string? &dirtyString=`[[Wayfinder? &startId=`49` &titleOfLinks=`id` &textOfLinks=`pagetitle`]]`!]
__________
[!sanitise_string? &dirtyString=`cheese noodle madness`!]


returns

++++
<ul><li class="active"><a href="/mtn/--2009-03-11/index.php?id=51" title="General Information" >General Info</a><ul><li class="active"><a href="/mtn/--2009-03-11/index.php?id=61" title="Admission Information" >Admission Information</a></li> <li class="last"><a href="/mtn/--2009-03-11/index.php?id=62" title="Maps & Directions" >Maps & Directions</a></li> </ul></li> <li><a href="/mtn/--2009-03-11/index.php?id=52" title="Education" >Education</a></li> <li><a href="/mtn/--2009-03-11/index.php?id=53" title="Exhibits" >Exhibits</a></li> <li><a href="/mtn/--2009-03-11/index.php?id=54" title="What’s On" >What’s On</a></li> <li><a href="/mtn/--2009-03-11/index.php?id=55" title="In the News" >News</a></li> <li><a href="/mtn/--2009-03-11/index.php?id=56" title="Become a Supporter" >Support</a></li> <li class="last"><a href="/mtn/--2009-03-11/index.php?id=57" title="WCED Mobile ScienCentre" >WCED Mobile</a></li> </ul>
++++
50|hello
---------
[[sanitise_string? &dirtyString=`<ul><li><a href="http://localhost/mtn/--2009-03-11/" title="1" >Home</a></li> <li><a href="/mtn/--2009-03-11/index.php?id=47" title="47" >About</a></li> <li class="last"><a href="/mtn/--2009-03-11/index.php?id=6" title="6" >Contact</a></li> </ul>`]]
__________
cheese noodle madness|hello



All sanitise_string does for now is append |hello to $dirtyString

Notice the 2nd last example, outer snippet didn’t get parsed, but [! !] changed to [[ ]]

Any ideas?

I don’t know if it is possible to call a snippet with details inside another.

Can you tell us what you want to do? Why do you need to call a snippet inside a snippet?