commit bash-20190223 snapshot

tests/quote.right

@@ -128,3 +128,17 @@ argv[2] = <>
 argv[1] = <>
 argv[2] = <>
 argv[1] = <>
+argv[1] = <4>
+argv[2] = <>
+argv[1] = <ab>
+argv[2] = <>
+argv[1] = <ab>
+argv[2] = <>
+argv[1] = <ab>
+argv[2] = <>
+argv[1] = <ab>
+argv[2] = <>
+argv[1] = <ab ''>
+argv[1] = <ab >
+argv[1] = <ab ''>
+argv[1] = <ab >

tests/quote.tests

@@ -122,3 +122,4 @@ echo ${foo:-string \\\}}
 
 ${THIS_SH} ./quote1.sub
 ${THIS_SH} ./quote2.sub
+${THIS_SH} ./quote3.sub

tests/quote3.sub

@@ -0,0 +1,18 @@
+# new tests
+x=4
+sp=' '
+
+# word
+recho ${x}${sp}''
+
+# unquoted
+recho ${x+ab "$y"}
+recho ${x+ab ''}
+recho ${x+ab "$( : )"}
+recho ${x+ab "${yy}"}
+
+# quoted
+recho "${x+ab ''}"
+recho "${x+ab ""}"
+recho "${x+ab '${yy}'}"
+recho "${x+ab "${yy}"}"