DO?

[vefatica]

If I execute a batch file containing simply

DO

TCC uses 25% CPU until it is interrupted (Ctrl-C) or is closed. What's it doing? This seems undesirable.

And what's Do_Cmd(). Can it be used for anything ... what ...how?

Thanks.

 

[vefatica]

And if I execute a batfile containing (only) "DO i", I get a syntax message.

If the batfile contains (only) "DO i=", it appears to execute DIR.

It's very strange!

 

[vefatica]

And if I execute a batfile containing (only) "DO i", I get a syntax message.

If the batfile contains (only) "DO i=", it appears to execute DIR.

It's very strange!

Forget that message. It was a corrupt Unicode file (no BOM). But my earlier observation remains. If the file says merely "DO", TCC gets stuck.

 

[rconn]

> If I execute a batch file containing simply
>
> Code:
> ---------
> DO
> ---------
> TCC uses 25% CPU until it is interrupted (Ctrl-C) or is closed. What's
> it doing? This seems undesirable.

It's trying to read the next line in the batch file. (12% CPU usage here.)
YOU may know it's not a self-modifying batch file, but only the DWIM parser
can be sure.

> And what's Do_Cmd(). Can it be used for anything ... what ...how?

It's the DO parser, and it cannot be used by a plugin, because it loops back
through the command parser and uses a second function to test for loop
termination.

 

[Charles Dye]

YOU may know it's not a self-modifying batch file, but only the DWIM parser can be sure.

So, you just need to solve the Turing halting problem. We expect it in v12.