diff --git a/src/env_parallel b/src/env_parallel
index 41279adf..3a5ad1e6 100755
--- a/src/env_parallel
+++ b/src/env_parallel
@@ -33,7 +33,7 @@ while test $# -gt 0; do
 	  grep env_parallel.ksh $HOME/.kshrc 2>/dev/null ||
   	    echo 'source `which env_parallel.ksh`' >> $HOME/.kshrc
 	  grep env_parallel.pdksh $HOME/.profile 2>/dev/null ||
-  	    echo 'source `which env_parallel.pdksh`' >> $HOME/.profile
+  	    echo '. `which env_parallel.pdksh`' >> $HOME/.profile
 	  grep env_parallel.csh $HOME/.cshrc 2>/dev/null ||
   	    echo 'source `which env_parallel.csh`' >> $HOME/.cshrc
 	  grep env_parallel.tcsh $HOME/.tcshrc 2>/dev/null ||
@@ -78,7 +78,7 @@ ksh:   Put this in $HOME/.kshrc:  source `which env_parallel.ksh`
        Supports: aliases, functions, variables, arrays
 
 pdksh: Put this in $HOME/.profile:  source `which env_parallel.pdksh`
-       E.g. by doing:  echo 'source `which env_parallel.pdksh`' >> $HOME/.profile
+       E.g. by doing:  echo '. `which env_parallel.pdksh`' >> $HOME/.profile
        Supports: aliases, functions, variables, arrays
 
 csh:   Put this in $HOME/.cshrc:  source `which env_parallel.csh`
diff --git a/src/env_parallel.bash b/src/env_parallel.bash
index 54f64171..ce735156 100755
--- a/src/env_parallel.bash
+++ b/src/env_parallel.bash
@@ -26,11 +26,20 @@
 # Fifth Floor, Boston, MA 02110-1301 USA
 
 # Supports env of 127426 bytes
+
 env_parallel() {
-  export PARALLEL_ENV="$(echo "shopt -s expand_aliases 2>/dev/null"; alias;typeset -p |
-    grep -vFf <(readonly) |
-    grep -v 'declare .. (GROUPS|FUNCNAME|DIRSTACK|_|PIPESTATUS|USERNAME|BASH_[A-Z_]+) ';
+  # env_parallel.bash
+  PARALLEL_ENV="$(alias;
+    typeset -p |
+      grep -vFf <(readonly) |
+      grep -v 'declare .. (GROUPS|FUNCNAME|DIRSTACK|_|PIPESTATUS|USERNAME|BASH_[A-Z_]+) ';
     typeset -f)";
+  # Copy shopt (so e.g. extended globbing works)
+  parallel_shopt="$(shopt 2>/dev/null |
+    perl -pe 's:\s+off:;: and s/^/shopt -u /;
+              s:\s+on:;: and s/^/shopt -s /;')"
+  export PARALLEL_ENV="$parallel_shopt$PARALLEL_ENV"
+  unset parallel_shopt;
   `which parallel` "$@";
   unset PARALLEL_ENV;
 }
diff --git a/src/env_parallel.fish b/src/env_parallel.fish
index e3e4bd44..f881cc49 100755
--- a/src/env_parallel.fish
+++ b/src/env_parallel.fish
@@ -41,6 +41,7 @@
 #   separator.
 
 function env_parallel
+  # env_parallel.fish
   setenv PARALLEL_ENV (
     begin;
       # Export function definitions
diff --git a/src/env_parallel.ksh b/src/env_parallel.ksh
index 0a4d253f..2662a72e 100755
--- a/src/env_parallel.ksh
+++ b/src/env_parallel.ksh
@@ -26,6 +26,7 @@
 # Fifth Floor, Boston, MA 02110-1301 USA
 
 env_parallel() {
+  # env_parallel.ksh
   export PARALLEL_ENV="$(alias | perl -pe 's/^/alias /';typeset -p|egrep -v 'typeset( -i)? -r|PIPESTATUS';typeset -f)";
   `which parallel` "$@";
   unset PARALLEL_ENV;
diff --git a/src/env_parallel.pdksh b/src/env_parallel.pdksh
index 67c6a53e..c82f1978 100755
--- a/src/env_parallel.pdksh
+++ b/src/env_parallel.pdksh
@@ -26,6 +26,7 @@
 # Fifth Floor, Boston, MA 02110-1301 USA
 
 env_parallel() {
+  # env_parallel.pdksh
   export PARALLEL_ENV="$(alias | perl -pe 's/^/alias /';typeset -p|egrep -v 'typeset( -i)? -r|PIPESTATUS';typeset -f)";
   `which parallel` "$@";
   unset PARALLEL_ENV;
diff --git a/src/env_parallel.zsh b/src/env_parallel.zsh
index 7a8e254b..490735a3 100755
--- a/src/env_parallel.zsh
+++ b/src/env_parallel.zsh
@@ -26,6 +26,7 @@
 # Fifth Floor, Boston, MA 02110-1301 USA
 
 env_parallel() {
+  # env_parallel.zsh
   export PARALLEL_ENV="$(alias | perl -pe 's/^/alias /'; typeset -p |
     grep -aFvf <(typeset -pr) |
     egrep -iav 'ZSH_EVAL_CONTEXT|LINENO=| _=|aliases|^typeset [a-z_]+$'|
diff --git a/src/parallel b/src/parallel
index 1bccc174..0ec83aba 100755
--- a/src/parallel
+++ b/src/parallel
@@ -1195,7 +1195,7 @@ sub check_invalid_option_combinations {
 
 sub init_globals {
     # Defaults:
-    $Global::version = 20160622;
+    $Global::version = 20160627;
     $Global::progname = 'parallel';
     $Global::infinity = 2**31;
     $Global::debug = 0;
diff --git a/testsuite/tests-to-run/parallel-local-0.3s.sh b/testsuite/tests-to-run/parallel-local-0.3s.sh
index 6d96591a..0299da40 100644
--- a/testsuite/tests-to-run/parallel-local-0.3s.sh
+++ b/testsuite/tests-to-run/parallel-local-0.3s.sh
@@ -614,6 +614,17 @@ echo '### bug #48295: --results should be dynamic like --wd'
 
 echo '**'
 
+  bash -O extglob -c '. `which env_parallel.bash`; 
+    _longopt () { 
+      case "$prev" in 
+        --+([-a-z0-9_])) 
+          echo foo;; 
+      esac; 
+    }; 
+    env_parallel echo ::: env_parallel 2>&1 
+  '
+
+echo '**'
 
 EOF
 echo '### 1 .par file from --files expected'
diff --git a/testsuite/wanted-results/parallel-local-0.3s b/testsuite/wanted-results/parallel-local-0.3s
index 9e2524a0..b51b8431 100644
--- a/testsuite/wanted-results/parallel-local-0.3s
+++ b/testsuite/wanted-results/parallel-local-0.3s
@@ -1676,6 +1676,10 @@ B b
 /tmp/parallel-48295/B/1/B/2/b/stderr
 /tmp/parallel-48295/B/1/B/2/b/stdout
 echo '**'
+**
+  bash -O extglob -c '. `which env_parallel.bash`;     _longopt () {       case "$prev" in         --+([-a-z0-9_]))           echo foo;;       esac;     };     env_parallel echo ::: env_parallel 2>&1   '
+env_parallel
+echo '**'
 **
 ### 1 .par file from --files expected
 0