On Wed, Jan 05, 2011 at 08:21:18AM -0800, chengiz wrote: > So if I get this right, the only time this is a problem is when the > command substitution runs more than once.
I'd actually characterize it differently: it's unsafe to run arbitrary commands during tab completion, because bash doesn't know what those commands might do. > When does this happen? Not > in my "ls `pwd`/<tab>" example where the command runs once and > replaces itself with its output. Does it only run more than once when > the ticks are not complete? You might realize you made a mistake, hit Ctrl-U, and start over. But the backticked command has already been executed. You might hit ESC # to comment out the command line because you suddenly realize that you need to do something else first. Then you come back to it (ESC k k ...), remove the # sign, finish typing the command, and run it. But the backticked command was already executed much earlier than you might have wished (two commands ago).