How to use the Tcl binding so cleanup works

[schlenk]

The current Tcl binding has problems with cleanup, sometimes the destructor does not get called and other nuisances.

I did some small experiments with the binding and found, that the constructor gets called in some cases and not in others:

This works: xapian::WritableDatabase? xapiandb testdir $::xapian::DB_CREATE_OR_OVERWRITE rename xapiandb ""

This seems it does not: xapian::WritableDatabase? xapiandb testdir $::xapian::DB_CREATE_OR_OVERWRITE set db xapiandb $db -delete

neither does this set db [xapian::WritableDatabase xapiandb testdir $::xapian::DB_CREATE_OR_OVERWRITE] $db -delete

or this: set db [xapian::WritableDatabase xapiandb testdir $::xapian::DB_CREATE_OR_OVERWRITE] rename $db ""

I'm not sure if it is a problem with the SWIG wrapping, but thing there are some subtle problems somewhere in there.

Michael

[olly]

It sounds like something isn't quite right inside SWIG, but I don't think I'm qualified to investigate it, since I don't know tcl or the inside of SWIG,

I've added your observations to the tcl bindings documentation, so at least people can work around this problem.