Sheldon Hearn wrote: > > On Mon, 12 Jul 1999 18:37:13 GMT, Niall Smart wrote: > > > The patch appended seems to fix this, I'd like someone familiar > > with sh to review it though, since this may be symptomatic of > > a general problem with command substitution. > > As I understand your patch, you're saying "we should fork off a child > process when the command in question is cd"? This is what I missed when > I tried ``echo .`sleep 600`.'' and assumed that the result was proof > that we always spawn a subprocess for backtick evaluation. :-(
As I understand it most builtins will not spawn a new shell when they are used in command substitution: niall% echo `echo $$` $$ 20354 20354 niall% Niall To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
