Hello all, -- begin -- $ bash -c '! true | false; echo $?' 0
$ ash -c '! true | false; echo $?' 1 -- end -- Mostly "if" conditions are affected by this issue. Quote[1] from the "Shell Command Language" standard: "If the reserved word ! does not precede the pipeline, the exit status shall be the exit status of the last command specified in the pipeline. Otherwise, the exit status shall be the logical NOT of the exit status of the last command. That is, if the last command returns zero, the exit status shall be 1; if the last command returns greater than zero, the exit status shall be zero." [1] http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_09_02 So, in this particular case, ash is not compliant with the standard, nor it is compatible with bash or dash (Debian ash derivative). P.S. $ cygcheck -c ash bash Cygwin Package Information Package Version Status ash 20040127-3 OK bash 3.2.39-20 OK P.P.S. Please, CC me. I'm not on the list. -- ...Bye..Dmitry. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
