additional tests; documentation updates

tests/alias.right

@@ -41,3 +41,5 @@ baz
 foo
 bar
 baz
+<áa>
+<aá>

tests/alias.tests

@@ -62,3 +62,4 @@ ${THIS_SH} ./alias2.sub
 ${THIS_SH} ./alias3.sub
 ${THIS_SH} ./alias4.sub
 ${THIS_SH} ./alias5.sub
+${THIS_SH} ./alias6.sub

tests/alias6.sub

@@ -0,0 +1,13 @@
+# make sure aliases that end in multibyte characters don't interfere with the
+# space sentinel alias expansion adds; problem through bash-5.1
+shopt -s expand_aliases
+
+LC_ALL=en_US.UTF-8
+
+alias a1='printf "<%s>\\n" áa'
+a1
+
+alias a2='printf "<%s>\\n" aá'
+a2
+
+unalias a1 a2

tests/comsub.right

@@ -19,6 +19,7 @@ argv[1] = <sed> argv[2] = <-e> argv[3] = <s/[^I:]//g>
 argv[1] = <foo\^Jbar>
 argv[1] = <foobar>
 argv[1] = <foo\^Jbar>
+nested
 #esac
 a
 ok 1
@@ -62,5 +63,6 @@ ok 4
 ok 5
 ok 6
 ok 7
+ok 9
 ok 8
 ok 8 

tests/comsub.tests

@@ -69,6 +69,13 @@ comsub_foo_1()
   echo $(while true; do case $HOME in /*) echo abs ;; esac; done)
 }
 
+echo $(
+echo $(
+echo $(echo $( echo nested )
+)
+)
+)
+
 ${THIS_SH} ./comsub1.sub
 ${THIS_SH} ./comsub2.sub
 ${THIS_SH} ./comsub3.sub

tests/comsub5.sub

@@ -36,6 +36,12 @@ echo "$( nest echo ok 7 ) )"
 
 alias short='echo ok 8 )'
 
+alias DO='{ '
+alias DONE='}'
+got=$(DO
+echo ok 9; DONE)
+echo "$got" 
+
 echo $( short
 echo "$( short "