allow locale's decimal point as radix character when parsing fixed-point decimal into seconds and fractional seconds; handle case of shell script file descriptor being made non-blocking; fix smalkl memory leak in programmable completion of shell option names; fix for patsub_replacement behavior when BASH_COMPAT = 42 and the replacement string is quoted; fix for readine when changing show-mode-in-prompt variable

tests/new-exp.right

@@ -823,4 +823,29 @@ two
 &two
 otwone
 &twone
+	new-exp17.sub
+unquoted word expansion with quoted pattern and replacement
+4.2: 4.2, a < b
+5.3: 4.2, a < b
+5.3: 5.2, a < b
+double-quoted word expansion with quoted pattern and replacement
+4.2: 4.2, a '<' b
+5.3: 4.2, a '<' b
+5.3: 5.2, a < b
+unquoted word expansion with unquoted pattern and replacement
+4.2: 4.2, a < b
+5.3: 4.2, a <lt; b
+5.3: 5.2, a <lt; b
+double-quoted word expansion with unquoted pattern and replacement
+4.2: 4.2, a &lt; b
+5.3: 4.2, a &lt; b
+5.3: 5.2, a <lt; b
+unquoted word expansion with backslash-quoted &
+4.2: 4.2, a &lt; b
+5.3: 4.2, a &lt; b
+5.3: 5.2, a &lt; b
+double-quoted word expansion with backslash-quoted &
+4.2: 4.2, a \&lt; b
+5.3: 4.2, a \&lt; b
+5.3: 5.2, a &lt; b
 ./new-exp.tests: line 1: ABXD: parameter unset

tests/new-exp.tests

@@ -668,6 +668,7 @@ test_runsub ./new-exp15.sub
 
 # pattern substitution with `&' (quoted and unquoted) in the replacement string
 test_runsub ./new-exp16.sub
+test_runsub ./new-exp17.sub	# test bash-4.2 compat
 
 expect $0: 'ABXD: parameter unset'
 ${THIS_SH} -c 'recho ${ABXD:?"parameter unset"}' $0

tests/new-exp17.sub

@@ -0,0 +1,68 @@
+#   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/>.
+#
+# address issues with patsub_replacement, quoting `&', and BASH_COMPAT <= 42
+
+# unquoted pattern substitutions with unquoted pattern and replacement strings
+# will still perform matching and replacement even if BASH_COMPAT == 42
+
+s="a < b"
+
+echo unquoted word expansion with quoted pattern and replacement
+echo '4.2: 4.2, a &lt; b'
+for ver in 4.2 5.2; do
+  BASH_COMPAT=$ver # ignored for bash version less than 5.0
+  t=${s//'<'/'&lt;'}
+  echo "${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}: $BASH_COMPAT, $t"
+done
+
+echo double-quoted word expansion with quoted pattern and replacement
+echo "4.2: 4.2, a '&lt;' b"
+for ver in 4.2 5.2; do
+  BASH_COMPAT=$ver # ignored for bash version less than 5.0
+  t="${s//'<'/'&lt;'}"
+  echo "${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}: $BASH_COMPAT, $t"
+done
+
+echo unquoted word expansion with unquoted pattern and replacement
+echo '4.2: 4.2, a &lt; b'
+for ver in 4.2 5.2; do
+  BASH_COMPAT=$ver # ignored for bash version less than 5.0
+  t=${s//</&lt;}
+  echo "${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}: $BASH_COMPAT, $t"
+done
+
+# XXX - this is iffy but difficult to distinguish internally
+echo double-quoted word expansion with unquoted pattern and replacement
+echo '4.2: 4.2, a &lt; b'
+for ver in 4.2 5.2; do
+  BASH_COMPAT=$ver # ignored for bash version less than 5.0
+  t="${s//</&lt;}"
+  echo "${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}: $BASH_COMPAT, $t"
+done
+
+echo unquoted word expansion with backslash-quoted '&'
+echo '4.2: 4.2, a &lt; b'
+for ver in 4.2 5.2; do
+  BASH_COMPAT=$ver # ignored for bash version less than 5.0
+  t=${s//</\&lt;}
+  echo "${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}: $BASH_COMPAT, $t"
+done
+
+echo double-quoted word expansion with backslash-quoted '&'
+echo '4.2: 4.2, a \&lt; b'
+for ver in 4.2 5.2; do
+  BASH_COMPAT=$ver # ignored for bash version less than 5.0
+  t="${s//</\&lt;}"
+  echo "${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}: $BASH_COMPAT, $t"
+done