What does an interpreter command do in unix/tcl?

0
votes

I am observing one command in my TCL code (interpreter) . the command name is "interpreter" .

I searched on the google for this command , but I did not get much information .

Can anyone explain about this command ?

Thanks in advance .

1
unixtcl
Do you mean interp? : astro.princeton.edu/~rhl/Tcl-Tk_docs/tcl/interp.n.html - brokenfoot
no it is "interpreter" . - user3103694
I don't know whether it is unix command or tcl command .. The execution of the script is pausing there . - user3103694
Tcl doesn't have a built-in interpreter command. Either your program, or some library it uses, defines that command. You will need to add more details to your question if you want more help. - rob mayoff
Nothing on the Tcler's Wiki claims that interpreter is a command for a particular Tcl package either. Whatever it is, it's not “well known”… - Donal Fellows

1 Answers

1
votes

Looks like I'm a year late, but maybe you're using Expect, a tcl plugin?

If you follow the link above search for interpreter " with ctrl+f you will find the following (bizarrely formatted) description:

causes the user to be interactively prompted for Expect and Tcl commands. The result of each command is printed.

Actions such as break and continue cause control structures (i.e., for, proc) to behave in the usual way. However return causes interpreter to return to its caller, while inter_return causes interpreter to cause a return in its caller. For example, if "proc foo" called interpreter which then executed the action inter_return, proc foo would return. Any other command causes interpreter to continue prompting for new commands.

By default, the prompt contains two integers. The first integer describes the depth of the evaluation stack (i.e., how many times Tcl_Eval has been called). The second integer is the Tcl history identifier. The prompt can be set by defining a procedure called "prompt1" whose return value becomes the next prompt. If a statement has open quotes, parens, braces, or brackets, a secondary prompt (by default "+> ") is issued upon newline. The secondary prompt may be set by defining a procedure called "prompt2".

tl;dr: It pauses your script and allows you to execute tcl commands