how can one break or stop or return from a script?

I don't know how to do this in the way you describe.

Easy alternatives include:

? - putting the part of the script that is to be executed
conditionally into a separate file, and then source it or not based
on some condition.
? ?- simply wrapping the different parts of the script in if, then, else blocks.

-Don

At 1:37 PM -0800 11/16/09, Stu wrote:

Hi,

I am using a script to initialize variables in the global workspace.

Based on some condition, I would like to stop evaluation of a script
sourced on the command-line, without issuing an error.

My current solution is the following hack that uses a repeat { }
statement

----------- init.R -----------
#hack to enable setting of breakpoint
repeat {

...
if (condition) {
? ? break;
}

...

# remember to break !!
break;
} #end repeat
EOF

Thanks,
- Stu

--
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062