diff --git a/tests/actions-test-lib.sh b/tests/actions-test-lib.sh
index 2928261..6d77170 100644
--- a/tests/actions-test-lib.sh
+++ b/tests/actions-test-lib.sh
@@ -16,3 +16,21 @@ echo "custom action $1"
 EOF
 chmod +x ".todo.actions.d/$1"
 }
+
+make_action_in_folder()
+{
+    unset TODO_ACTIONS_DIR
+    [ -d .todo.actions.d ] || mkdir .todo.actions.d
+    mkdir .todo.actions.d/$1
+    cat > ".todo.actions.d/$1/$1" <<EOF
+#!/bin/bash
+[ "\$1" = "usage" ] && {
+    echo "    $1 ITEM#[, ITEM#, ...] [TERM...]"
+    echo "      This custom action does $1."
+    echo ""
+    exit
+}
+echo "custom action $1 in folder $1"
+EOF
+chmod +x ".todo.actions.d/$1/$1"
+}
diff --git a/tests/t6050-completion-addons.sh b/tests/t6050-completion-addons.sh
index ef38819..496c8ae 100755
--- a/tests/t6050-completion-addons.sh
+++ b/tests/t6050-completion-addons.sh
@@ -11,6 +11,8 @@ readonly ACTIONS='add a addto addm append app archive command del rm depri dp do
 readonly OPTIONS='-@ -@@ -+ -++ -d -f -h -p -P -PP -a -n -t -v -vv -V -x'
 
 readonly ADDONS='bar baz foobar'
+
+readonly CONTAINED='xeno zoolander'
 makeCustomActions()
 {
     set -e
@@ -31,12 +33,28 @@ makeCustomActions()
     chmod -x "$datafile"
     [ -x "$datafile" ] && rm "$datafile"    # Some file systems may always make files executable; then, skip this check.
 
+    # Add an executable file in a folder with the same name as the file,
+    # in order to ensure completion
+    for contained in $CONTAINED
+    do
+        mkdir "${1}/$contained"
+        > "${1}/$contained/$contained"
+        chmod u+x "${1}/$contained/$contained"
+    done
+
     set +e
 }
 removeCustomActions()
 {
     set -e
     rmdir "${1}/subdir"
+
+    for contained in $CONTAINED
+    do
+        rm "${1}/$contained/$contained"
+        rmdir "${1}/$contained"
+    done
+
     rm "${1:?}/"*
     rmdir "$1"
     set +e
@@ -46,8 +64,8 @@ removeCustomActions()
 # Test resolution of the default TODO_ACTIONS_DIR.
 #
 makeCustomActions "$HOME/.todo.actions.d"
-test_todo_completion 'all arguments' 'todo.sh ' "$ACTIONS $ADDONS $OPTIONS"
-test_todo_completion 'all arguments after option' 'todo.sh -a ' "$ACTIONS $ADDONS $OPTIONS"
+test_todo_completion 'all arguments' 'todo.sh ' "$ACTIONS $ADDONS $CONTAINED $OPTIONS"
+test_todo_completion 'all arguments after option' 'todo.sh -a ' "$ACTIONS $ADDONS $CONTAINED $OPTIONS"
 test_todo_completion 'all arguments beginning with b' 'todo.sh b' 'bar baz'
 test_todo_completion 'all arguments beginning with f after options' 'todo.sh -a -v f' 'foobar'
 test_todo_completion 'nothing after addon action' 'todo.sh foobar ' ''
@@ -58,7 +76,7 @@ removeCustomActions "$HOME/.todo.actions.d"
 #
 mkdir  "$HOME/.todo"
 makeCustomActions "$HOME/.todo/actions"
-test_todo_completion 'all arguments with actions from .todo/actions/' 'todo.sh ' "$ACTIONS $ADDONS $OPTIONS"
+test_todo_completion 'all arguments with actions from .todo/actions/' 'todo.sh ' "$ACTIONS $ADDONS $CONTAINED $OPTIONS"
 removeCustomActions "$HOME/.todo/actions"
 
 #
@@ -68,7 +86,7 @@ makeCustomActions "$HOME/addons"
 cat >> todo.cfg <<'EOF'
 export TODO_ACTIONS_DIR="$HOME/addons"
 EOF
-test_todo_completion 'all arguments with actions from addons/' 'todo.sh ' "$ACTIONS $ADDONS $OPTIONS"
+test_todo_completion 'all arguments with actions from addons/' 'todo.sh ' "$ACTIONS $ADDONS $CONTAINED $OPTIONS"
 removeCustomActions "$HOME/addons"
 
 test_done
diff --git a/tests/t8010-listaddons.sh b/tests/t8010-listaddons.sh
index ed0cb05..b4e89aa 100755
--- a/tests/t8010-listaddons.sh
+++ b/tests/t8010-listaddons.sh
@@ -41,4 +41,44 @@ ls
 quux
 EOF
 
+make_action_in_folder "chuck"
+# Add a bit of cruft in the action folders in order to ensure that we only
+# care about the executables with the same name as the folder in which they
+# reside.
+touch .todo.actions.d/chuck/mc_hammer     # can't touch this
+chmod u+x .todo.actions.d/chuck/mc_hammer # better run, better run run
+touch .todo.actions.d/chuck/README
+
+make_action_in_folder "norris"
+
+test_todo_session 'custom actions in subfolders' <<EOF
+>>> test -f .todo.actions.d/chuck/README
+=== 0
+
+>>> test -x .todo.actions.d/chuck/mc_hammer
+=== 0
+
+>>> todo.sh listaddons
+bar
+chuck
+ls
+norris
+quux
+EOF
+
+# nthorne: shamelessly stolen from above..
+chmod -x .todo.actions.d/norris/norris
+# On Cygwin, clearing the executable flag may have no effect, as the Windows ACL
+# may still grant execution rights. In this case, we skip the test.
+if [ -x .todo.actions.d/norris/norris ]; then
+    SKIP_TESTS="${SKIP_TESTS}${SKIP_TESTS+ }t8010.8"
+fi
+test_todo_session 'nonexecutable action in subfolder' <<EOF
+>>> todo.sh listaddons
+bar
+chuck
+ls
+quux
+EOF
+
 test_done
diff --git a/todo.sh b/todo.sh
index 6d7d549..1aa7293 100755
--- a/todo.sh
+++ b/todo.sh
@@ -302,6 +302,14 @@ addonHelp()
                     didPrintAddonActionsHeader=1
                 fi
                 "$action" usage
+            elif [ -d "$action" -a -x "$action/$(basename $action)" ]; then
+                if [ ! "$didPrintAddonActionsHeader" ]; then
+                    cat <<-EndAddonActionsHeader
+		  Add-on Actions:
+	EndAddonActionsHeader
+                    didPrintAddonActionsHeader=1
+                fi
+                "$action/$(basename $action)" usage
             fi
         done
     fi
@@ -314,6 +322,8 @@ actionUsage()
         action="${TODO_ACTIONS_DIR}/${actionName}"
         if [ -f "$action" -a -x "$action" ]; then
             "$action" usage
+        elif [ -d "$action" -a -x "$action/$(basename $action)" ]; then
+            "$action/$(basename $action)" usage
         else
             builtinActionUsage=$(actionsHelp | sed -n -e "/^    ${actionName//\//\\/} /,/^\$/p" -e "/^    ${actionName//\//\\/}$/,/^\$/p")
             if [ "$builtinActionUsage" ]; then
@@ -964,6 +974,10 @@ then
     shift
     ## Reset action to new first argument
     action=$( printf "%s\n" "$1" | tr 'A-Z' 'a-z' )
+elif [ -d "$TODO_ACTIONS_DIR/$action" -a -x "$TODO_ACTIONS_DIR/$action/$action" ]
+then
+    "$TODO_ACTIONS_DIR/$action/$action" "$@"
+    exit $?
 elif [ -d "$TODO_ACTIONS_DIR" -a -x "$TODO_ACTIONS_DIR/$action" ]
 then
     "$TODO_ACTIONS_DIR/$action" "$@"
@@ -1405,6 +1419,8 @@ note: PRIORITY must be anywhere from A to Z."
         do
             if [ -f "$action" -a -x "$action" ]; then
                 echo "$action"
+            elif [ -d "$action" -a -x "$action/$action" ]; then
+                echo "$action"
             fi
         done
     fi