I wrote a simple JimTcl debugger. The debugger script is called "jdb.tcl" and can be used in interactive mode, replay mode, or in association with JimTcl tcltest by using a simple shim script "testing.tcl". An example test file is available in the repository.

Addit:

1. Support for multiline Tcl commands added to jdb.tcl
2. Help documentation for jdb.tcl improved
3. Code of testing.tcl cleaned up, and documentation improved
4. Versioning of jdb.tcl and testing.tcl added