add(debug) vscode debug config

.vscode/launch.json

@@ -1,7 +1,4 @@
 {
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
         {
@@ -14,8 +11,9 @@
             "args": [
                 "/usr/bin/Xephyr",
                 "/usr/bin/awesome",
-                "${workspaceFolder}/init.lua",
-            ]
+                "${workspaceFolder}/init.lua"
+            ],
+            "postDebugTask": "Terminate All Tasks"
         }
     ]
-}
+}

.vscode/tasks.json

@@ -0,0 +1,19 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Terminate All Tasks",
+            "command": "${workspaceFolder}/start-xephyr.sh stop",
+            "type": "shell",
+            "problemMatcher": []
+        }
+    ],
+    "inputs": [
+        {
+            "id": "terminate",
+            "type": "command",
+            "command": "workbench.action.tasks.terminate",
+            "args": "terminateAll"
+        }
+    ]
+}

start-xephyr.sh

@@ -1,21 +1,33 @@
 #!/usr/bin/env sh
 
+killXephyr() {
+    kill "$(pgrep Xephyr)" >/dev/null 2>&1
+}
+
+trap killXephyr EXIT
+
+if [ "$1" = "stop" ]; then
+    killXephyr
+    exit 0
+fi;
+
 xephyr=$1
 awesome=$2
 rc_file=$3
 
-# Check for the first free $DISPLAY
-for ((i=1;;i++)); do
-    if [[ ! -f "/tmp/.X${i}-lock" ]]; then
+# Check for the first free display
+for i in $(seq 1 10); do
+    if [ ! -f "/tmp/.X${i}-lock" ]; then
         D=$i;
         break;
     fi;
 done
 
 # Start Xephyr
-$xephyr :$D -name xephyr_$D -ac -br -noreset -screen 1600x900 >/dev/null 2>&1 &
+$xephyr :"$D" -name xephyr_"$D" -ac -br -noreset -screen 1600x900 >/dev/null 2>&1 &
 sleep 1
 
 # Start Awesome
 DISPLAY=:$D.0 $awesome \
-    --config $rc_file
+    --config "$rc_file"
+