On Mon, Dec 07, 2009 at 01:29:50AM +0900, Masao Uebayashi wrote: > > Hmm. Is my version incompatible to POSIX? Or do we go to "write really > portable shell script" load like Autoconf, not POSIX shell? [1]
It is posix compliant, but falls foul of a common shell bug. http://www.gnu.org/software/hello/manual/autoconf/Shell-Substitutions.html Avoid commands that contain unbalanced parentheses in here-documents, comments, or case statement patterns, as many shells mishandle them. For example, Bash 3.1, ksh88, pdksh 5.2.14, and Zsh 4.2.6 all mishandle the following valid command: echo $(case x in x) echo hello;; esac) David -- David Laight: da...@l8s.co.uk
