Chapter 19. Multiple Interpreters and Safe-Tcl
This chapter describes how to create more than one Tcl interpreter in your application. A child interpreter can be made safe so that it can execute untrusted scripts without compromising your application or your computer. Command aliases, hidden commands, and shared I/O channels enable communication among interpreters. Tcl command described is: interp.
Safe-Tcl was invented by Nathaniel Borenstein and Marshall Rose so that they could send Tcl scripts via e-mail and have the recipient safely execute the script without worry of viruses or other attacks. Safe-Tcl works by removing dangerous commands like exec and open that would let an untrusted script damage the host computer. You can think of this ...
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