new readline application hook to print macro key sequences and values; change bind -X default output format; bind -x accepts more input formats; quoting changes for pathname expansion patterns

tests/comsub26.sub

@@ -0,0 +1,36 @@
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# more tests for nofork comsub functionality
+
+REPLY=outside
+
+echo ${| REPLY=inside1; }-${| REPLY=inside2; }-$REPLY
+
+echo "BEFORE${| printf -v REPLY '%s\n' AA BB CC; }AFTER"
+echo "BEFORE${| printf -v REPLY $'%s\n' AA BB CC; }AFTER"
+
+echo ${ echo unbalanced braces; }}}
+
+echo $(echo combined ${| REPLY=comsubs; })
+echo ${ echo $(echo combined ${| REPLY=comsubs; }); }
+
+var=outside
+echo ${ var=inside; echo $var; }
+echo after: var = $var
+
+( echo ${ echo var=inside; exit 42 ; echo var=inside2; } )
+echo after: $? var = $var
+
+( echo ${ echo var=inside; return 42 ; echo var=inside2; } $? )
+echo after: $? var = $var