commit bash-20180112 snapshot

tests/alias.right

@@ -18,3 +18,15 @@ one
 two
 three
 four
+Error: bar
+ok 1
+ok 2
+text
+whoops:  nullalias
+foo
+a
+a b
+a b
+a a b
+ok 3
+ok 4

tests/alias.tests

@@ -39,3 +39,4 @@ unalias foo bar baz
 ${THIS_SH} ./alias1.sub
 ${THIS_SH} ./alias2.sub
 ${THIS_SH} ./alias3.sub
+${THIS_SH} ./alias4.sub

tests/alias4.sub

@@ -0,0 +1,61 @@
+shopt -s expand_aliases
+
+# from an austin-group report
+alias foo="echo 'Error:"
+foo bar'
+
+# from some FreeBSD sh tests
+
+v=1
+alias a='unalias -a
+v=2'
+eval a
+[ "$v" = 2 ] && echo ok 1
+v=1
+alias a='unalias a
+v=2'
+eval a
+[ "$v" = 2 ] && echo ok 2
+
+# make sure command doesn't ever reset anything even if it's made a keyword
+unalias -a
+alias command=command
+alias true='echo bad'
+eval 'command true'
+
+unalias -a
+alias alias0=command
+alias true='echo bad'
+eval 'alias0 true'
+
+# make sure null aliases are ok
+unalias -a
+alias nullalias=''
+alias foo='echo '
+foo nullalias text
+unalias foo
+
+# aliases shouldn't be expanded in quoted strings even when the previous word
+# is an alias whose expansion ends in a space
+alias foo="echo 'whoops: "
+foo nullalias'
+
+unalias -a
+
+# recursive alias definitions
+alias echo=echo
+eval echo foo
+
+alias echo='echo a'
+
+echo
+echo b
+eval echo b
+echo $(eval echo b)
+
+unalias -a
+
+# alias expansion when in a command position after redirections
+alias e=echo
+eval '</dev/null e ok 3'
+eval 'a=true e ok 4'