Hi Jim, Eric, shell utilities experts, Sam reports that this line of code
inmodules=`echo "$handledmodules" | LC_ALL=C join -v 2 - "$tmp"/queued-modules` can print "gnulib-tool: line 1512: echo: write error: Broken pipe" on stderr. 1) The 'join' command (or 'join --nocheck-order' in coreutils 6.11 or newer) apparently closes its standard input and exits when the contents of the second file (small enough or even empty) allows to determine the complete 'join' output - without having read all of its standard input. 2) The kernel then transforms the pipe into a pipe with no readers. 3) The 'echo' command, when writing to a pipe with no readers, gets a SIGPIPE. 4) The 'echo' command or its parent shell prints an error message on stderr. Are these 4 behaviours all correct (POSIX compliant and to be expected)? If not, which one is incorrect/buggy? Bruno
