Activate TerminalOutput.noBuffering when -B/--batch-mode is passed via CLI

client/src/main/java/org/mvndaemon/mvnd/client/DefaultClient.java

@@ -49,6 +49,7 @@ public class DefaultClient implements Client {
 
         Path logFile = null;
         int i = 0;
+        boolean batchMode = false;
         while (i < argv.length) {
             final String arg = argv[i++];
             if ("-l".equals(arg) || "--log-file".equals(arg)) {
@@ -58,12 +59,15 @@ public class DefaultClient implements Client {
                     throw new IllegalArgumentException("-l and --log-file need to be followed by a path");
                 }
             } else {
+                if (!batchMode && ("-B".equals(arg) || "--batch-mode".equals(arg))) {
+                    batchMode = true;
+                }
                 args.add(arg);
             }
         }
 
         DaemonParameters parameters = new DaemonParameters();
-        try (TerminalOutput output = new TerminalOutput(parameters.noBuffering(), parameters.rollingWindowSize(), logFile)) {
+        try (TerminalOutput output = new TerminalOutput(batchMode || parameters.noBuffering(), parameters.rollingWindowSize(), logFile)) {
             try {
                 new DefaultClient(parameters).execute(output, args);
             } catch (DaemonException.InterruptedException e) {

common/src/main/java/org/mvndaemon/mvnd/common/Environment.java

@@ -61,7 +61,7 @@ public enum Environment {
     MVND_DAEMON_STORAGE("mvnd.daemon.storage", null, null, false),
     /**
      * Property that can be set to avoid buffering the output and display events continuously, closer to the usual maven
-     * display.
+     * display. Passing {@code -B} or {@code --batch-mode} on the command line enables this too for the given build.
      */
     MVND_NO_BUFERING("mvnd.noBuffering", null, "false", false),
     /**
@@ -101,7 +101,7 @@ public enum Environment {
     },
     /**
      * The maven builder name to use. Ignored if the user passes
-     * 
+     *
      * @{@code -b} or @{@code --builder} on the command line
      */
     MVND_BUILDER("mvnd.builder", null, "smart", false) {