On Mai 27 2021, Chet Ramey wrote: > On 5/26/21 9:55 PM, Dale R. Worley wrote: > >>> $ ! ! [ 1 -eq 1 ]; echo $? >>> 0 >> That last one isn't defined by the manual page. I'm surprised you don't >> get a syntax error. > > It's clearly valid.
According to the POSIX grammar, a pipeline can only be a pipe_sequence optionally preceded by a single Bang. If you want another Bang the pipe_sequnce needs to be either a subshell or a brace_group. Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."
