commit bash-20170331 snapshot

tests/dollar-at-star

@@ -276,4 +276,13 @@ ${THIS_SH} ./dollar-star7.sub
 # problem through bash-4.4 in some parameter expansion contexts
 ${THIS_SH} ./dollar-star8.sub
 
+# tests for expansions of "$@" when there are no positional parameter or when
+# $1 == '' and the expansion is preceded by something that results in a quoted
+# null string
+${THIS_SH} ./dollar-at7.sub
+
+# tests for expansions of $* when in an assignment context (no splitting) and
+# IFS is null
+${THIS_SH} ./dollar-star9.sub
+
 exit 0

tests/dollar-at7.sub

@@ -0,0 +1,46 @@
+set -- ''
+
+recho 1 ''"$@"
+recho 2 """$@"
+
+recho 3 "$@""$@"
+recho 4 "$x""$@"
+
+set --
+
+echo -----
+recho 1 ''"$@"
+recho 2 """$@"
+
+recho 3 "$@""$@"
+recho 4 "$x""$@"
+
+set -- X
+
+echo ------
+recho 1 ''"${@/*}"
+recho 2 """${@/*}"
+
+recho 3 "$x""${@/*}"
+
+recho 4 ''"${@#X}"
+recho 5 """${@#X}"
+
+recho 6 "$x""${@#X}"
+
+set --
+
+echo -----
+recho 1 ''"${@/*}"
+recho 2 """${@/*}"
+
+recho 3 "$x""${@/*}"
+
+recho 4 ''"${@#X}"
+recho 5 """${@#X}"
+
+recho 6 "$x""${@#X}"
+
+echo -----
+recho 1 "$novar${*}$(echo)"
+recho 2 ''"$novar${@}$(echo)"

tests/dollar-star9.sub

@@ -0,0 +1,16 @@
+set -- 1 2
+
+IFS=
+
+a=$* b=${*}
+c=${*/} d=${*#} e=${*%} f=${*:1}
+printf '<%s>' "$a" "$b" "$c" "$d" "$e" "$f"; echo
+
+unset a b c d e f
+: ${a=$*} ${b=${*}} ${c=${*/}}
+: ${d=${*#}} ${e=${*%}} ${f=${*:1}}
+printf '<%s>' "$a" "$b" "$c" "$d" "$e" "$f" ; echo
+
+unset f g
+f=${*,,} g=${*@Q}
+printf '<%s>' "$f" "$g" ; echo

tests/dollar.right

@@ -510,3 +510,53 @@ argv[1] = <a b c d>
 <def>
 <ghi>
 <jkl>
+argv[1] = <1>
+argv[2] = <>
+argv[1] = <2>
+argv[2] = <>
+argv[1] = <3>
+argv[2] = <>
+argv[1] = <4>
+argv[2] = <>
+-----
+argv[1] = <1>
+argv[2] = <>
+argv[1] = <2>
+argv[2] = <>
+argv[1] = <3>
+argv[1] = <4>
+argv[2] = <>
+------
+argv[1] = <1>
+argv[2] = <>
+argv[1] = <2>
+argv[2] = <>
+argv[1] = <3>
+argv[2] = <>
+argv[1] = <4>
+argv[2] = <>
+argv[1] = <5>
+argv[2] = <>
+argv[1] = <6>
+argv[2] = <>
+-----
+argv[1] = <1>
+argv[2] = <>
+argv[1] = <2>
+argv[2] = <>
+argv[1] = <3>
+argv[2] = <>
+argv[1] = <4>
+argv[2] = <>
+argv[1] = <5>
+argv[2] = <>
+argv[1] = <6>
+argv[2] = <>
+-----
+argv[1] = <1>
+argv[2] = <>
+argv[1] = <2>
+argv[2] = <>
+<12><12><12><12><12><12>
+<12><12><12><12><12><12>
+<12><'1' '2'>

tests/exp.right

@@ -334,3 +334,14 @@ jkl
 []
 [foo]
 []
+< A >< B >< A >< B >
+< A >< B >< A >< B >
+< A >< B >< a >< b >
+< A >< B >< A >< B >
+< A >< B ><' A '><' B '>
+-----
+< A >< B >< A >< B >
+< A >< B >< A >< B >
+< A >< B >< a >< b >
+< A >< B >< A >< B >
+< A >< B ><' A '><' B '>

tests/exp.tests

@@ -405,3 +405,4 @@ ${THIS_SH} ./exp6.sub
 ${THIS_SH} ./exp7.sub
 ${THIS_SH} ./exp8.sub
 ${THIS_SH} ./exp9.sub
+${THIS_SH} ./exp10.sub

tests/exp10.sub

@@ -0,0 +1,26 @@
+set -- ' A ' ' B '
+IFS=
+
+printf '<%s>' ${*} ${*##}
+echo
+printf '<%s>' ${*} ${*/}
+echo
+printf '<%s>' ${*} ${*,,}
+echo
+printf '<%s>' ${*} ${*:1:2}
+echo
+printf '<%s>' ${*} ${*@Q}
+echo
+
+echo -----
+
+printf '<%s>' ${@} ${@##}
+echo
+printf '<%s>' ${@} ${@/}
+echo
+printf '<%s>' ${@} ${@,,}
+echo
+printf '<%s>' ${@} ${@:1:2}
+echo
+printf '<%s>' ${@} ${@@Q}
+echo