commit bash-20201218 snapshot

tests/jobs.right

@@ -31,6 +31,7 @@ i killed it
 ./jobs5.sub: line 40: wait: %8: no such job
 2: ok 2
 2: ok 3
+127
 child1 exit status 0
 [1]+ Running sleep 20 &
 ./jobs7.sub: line 5: fg: no current jobs

tests/jobs5.sub

@@ -59,3 +59,8 @@ disown -a
 
 unset bgpid1 bgpid2 bgpid3
 unset wpid
+
+# now that we have no jobs, make sure that wait -n -p var leaves var unset
+jobs
+wait -n -p wpid
+echo $wpid $?

tests/lastpipe.right

@@ -18,3 +18,5 @@ A2
 B1
 B2
 HI -- 42 -- 0 42
+x=x
+x=x

tests/lastpipe.tests

@@ -71,3 +71,4 @@ ${THIS_SH} ./lastpipe1.sub
 echo lastpipe1.sub returns $?
 
 ${THIS_SH} ./lastpipe2.sub
+${THIS_SH} ./lastpipe3.sub

tests/lastpipe3.sub

@@ -0,0 +1,11 @@
+# problem in bash-5.1 running lastpipe in subshell if fd 0 is closed
+
+shopt -s lastpipe
+exec 0<&-
+
+echo x | read x
+echo x=$x
+unset x
+
+echo x | cat | read x
+echo x=$x