I want to take a text file which is a program source, and insert a print statement after each line, for example if line 1 is:

x=5

then insert
print "line 1: x=5"

so that when a program crashes hard (as in, the system reboots before I can see what happened) at least I can see the last line that executed.

Is there some kind of macro or plugin that I can use to do things like that?

Thanks.

- Joel