Typing 'as' in my development environment causes tclsh to be unresponsive
mytcl % as
^C
child killed: interrupt
while evaluating as
mytcl %
I don't care what kind of program is opened by the as command, is there a way to stop opening this external program in tclsh?
Yes. From https://wiki.tcl-lang.org/page/tclsh
You can set that in your ~/.tclshrc if you want to turn it off in every interactive tclsh session.