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Fixed bug #34241: --pipe should not spawn unneeded processes.

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This commit is contained in:
Ole Tange 2012-12-27 23:06:17 +01:00
parent 14f05a1e89
commit bbc9a53ea5
1 changed files with 3 additions and 0 deletions
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3
src/parallel
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@ -3875,6 +3875,9 @@ sub start {
. $job->seq() . "): $command\n");
if($opt::pipe) {
my ($in);
$command = q{
eval `echo $SHELL | grep -E "/(t)?csh" > /dev/null && echo setenv _FIRST_CHAR_FILE /tmp/$$.first_char_file || echo export _FIRST_CHAR_FILE=/tmp/$$.first_char_file`;
dd bs=1 count=1 of=$_FIRST_CHAR_FILE >&/dev/null; test -s "$_FIRST_CHAR_FILE" && ( cat $_FIRST_CHAR_FILE; rm $_FIRST_CHAR_FILE; cat - ) | }. "($command)";
# The eval is needed to catch exception from open3
eval {
$pid = ::open3($in, ">&OUT", ">&ERR", $ENV{SHELL}, "-c", $command) ||