diff --git a/testsuite/tests-to-run/parallel-local-ssh7.sh b/testsuite/tests-to-run/parallel-local-ssh7.sh
index f69582b8..5d6e3504 100755
--- a/testsuite/tests-to-run/parallel-local-ssh7.sh
+++ b/testsuite/tests-to-run/parallel-local-ssh7.sh
@@ -323,6 +323,40 @@ _EOF
   ssh -tt tcsh@lo "$myscript"
 }
 
+par_csh_underscore() {
+  echo '### csh'
+  myscript=$(cat <<'_EOF'
+    echo "### Testing of --env _"
+
+#    . `which env_parallel.tcsh`;
+    env_parallel --record-env;
+    alias myecho "echo "\$"myvar "\$'myarray'" aliases";
+    set myvar="variables";
+    set myarray=(and arrays in);
+    env_parallel myecho ::: work;
+    env_parallel -S server myecho ::: work;
+    env_parallel --env myvar,myarray,myecho myecho ::: work;
+    env_parallel --env myvar,myarray,myecho -S server myecho ::: work;
+    env_parallel --env _ myecho ::: work;
+    env_parallel --env _ -S server myecho ::: work;
+
+    echo myvar >> ~/.parallel/ignored_vars;
+    env_parallel --env _ myecho ::: work;
+    env_parallel --env _ -S server myecho ::: work;
+    alias myecho "echo "\$'myarray'" aliases";
+    echo myarray >> ~/.parallel/ignored_vars;
+    env_parallel --env _ myecho ::: work;
+    env_parallel --env _ -S server myecho ::: work;
+    echo myecho >> ~/.parallel/ignored_vars;
+    env_parallel --env _ myecho ::: work;
+    echo "OK      ^^^^^^^^^^^^^^^^^ if no myecho" >/dev/stderr;
+    env_parallel --env _ -S server myecho ::: work;
+    echo "OK      ^^^^^^^^^^^^^^^^^ if no myecho" >/dev/stderr;
+_EOF
+  )
+  ssh -tt csh@lo "$myscript"
+}
+
 # Test env_parallel:
 # + for each shell
 # + remote, locally
diff --git a/testsuite/wanted-results/parallel-local-ssh7 b/testsuite/wanted-results/parallel-local-ssh7
index eb9aa1ad..262ddad2 100644
--- a/testsuite/wanted-results/parallel-local-ssh7
+++ b/testsuite/wanted-results/parallel-local-ssh7
@@ -93,6 +93,24 @@ par_csh_man	too
 par_csh_man	arrays
 par_csh_man	work,
 par_csh_man	too
+par_csh_underscore	### csh
+par_csh_underscore	### Testing of --env _
+par_csh_underscore	#: Command not found.
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	variables and arrays in aliases work
+par_csh_underscore	and arrays in aliases work
+par_csh_underscore	and arrays in aliases work
+par_csh_underscore	and arrays in aliases work
+par_csh_underscore	OK      ^^^^^^^^^^^^^^^^^ if no myecho
+par_csh_underscore	and arrays in aliases work
+par_csh_underscore	OK      ^^^^^^^^^^^^^^^^^ if no myecho
+par_csh_underscore	Connection to lo closed.
 par_fish_funky	env_parallel: Warning: ASCII value 1 in variables is not supported
 par_fish_funky	env_parallel: Warning: ASCII value 1 in variables is not supported
 par_fish_funky	3 arg alias_works