Brower Plugin Compatiblity
The Web Browser plugin requires changes to the event loop mechanism because Tcl is embedded in an application with its own event loop. While the C APIs have supported this since Tcl 8.0.3, it has been dificult to do this sort of embedding wthout recompiling Tcl. The Tcl_SetNotifier API was added to support embedding a “stock” Tcl interpreter.
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