TclStubs.tcl_ParseVarName

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
struct TclStubs
extern (C)
int function(Tcl_Interp* interp, const(char)* start, int numBytes, Tcl_Parse* parsePtr, int append) nothrow tcl_ParseVarName;

Meta