efficiency change to command hashing; fix pointer aliasing problem with readline history-search-backward

tests/nquote.right

@@ -72,9 +72,9 @@ argv[1] = <a^A)b>
 argv[1] = <a^Ab>
 argv[1] = <^A>
 argv[1] = <\^A>
-0000000    a   $   '   \   0   1   '   b  \n   a 001   b  \n            
+0000000 a $ ' \ 0 1 ' b \n a 001 b \n
 0000015
-0000000    a   $   '   \   0   1   '   b  \n   a 001   b  \n            
+0000000 a $ ' \ 0 1 ' b \n a 001 b \n
 0000015
-0000000    A  \n   A  \n                                                
+0000000 A \n A \n
 0000004

tests/nquote5.sub

@@ -1,22 +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/>.
+#
+. test-glue-functions
+
 recho $( echo a$'\01)'b )
 recho $( echo a
b )
 recho $( echo \
 )
 recho $( echo \\
 )
 
 LC_CTYPE=C
-od -c <<EOF
+od -c <<EOF | _intl_normalize_spaces
 a$'\01'b
 a
b
 EOF
 
-od -c <<EOF
+od -c <<EOF | _intl_normalize_spaces
 ${none-a$'\01'b}
 ${none-a
b}
 EOF
 
 V=Aa$'\01'b
-od -c <<EOF
+od -c <<EOF | _intl_normalize_spaces
 ${V%a$'\01'b}
 ${V%a
b}
 EOF
-