Use client terminal width to format help

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

@@ -242,6 +242,7 @@ public ExecutionResult execute(ClientOutput output, List<String> argv) {
             if (localMavenRepository != null && args.stream().noneMatch(arg -> arg.startsWith("-Dmaven.repo.local="))) {
                 args.add("-Dmaven.repo.local=" + localMavenRepository.toString());
             }
+            Environment.MVND_TERMINAL_WIDTH.appendAsCommandLineOption(args::add, Integer.toString(output.getTerminalWidth()));
 
             final DaemonConnector connector = new DaemonConnector(parameters, registry);
             try (DaemonClientConnection daemon = connector.connect(output)) {

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

@@ -191,7 +191,10 @@ public enum Environment {
      */
     MVND_DUPLICATE_DAEMON_GRACE_PERIOD("mvnd.duplicateDaemonGracePeriod", null, "10 seconds", OptionType.DURATION,
             Flags.DISCRIMINATING),
-            ;
+    /**
+     * Internal property to tell the daemon the width of the terminal
+     */
+    MVND_TERMINAL_WIDTH("mvnd.terminalWidth", null, 0, OptionType.INTEGER, Flags.INTERNAL);
 
     static Properties properties;
 

common/src/main/java/org/mvndaemon/mvnd/common/logging/ClientOutput.java

@@ -33,4 +33,6 @@ public interface ClientOutput extends AutoCloseable {
     void accept(List<Message> messages);
 
     void describeTerminal();
+
+    int getTerminalWidth();
 }

common/src/main/java/org/mvndaemon/mvnd/common/logging/TerminalOutput.java

@@ -355,6 +355,11 @@ public void describeTerminal() {
         this.accept(Message.log(sb.toString()));
     }
 
+    @Override
+    public int getTerminalWidth() {
+        return terminal.getWidth();
+    }
+
     void readInputLoop() {
         try {
             while (!closing) {

daemon/src/main/java/org/apache/maven/cli/DaemonMavenCli.java

@@ -182,6 +182,7 @@ public int doMain(CliRequest cliRequest, Map<String, String> clientEnv) throws E
             initialize(cliRequest);
             cli(cliRequest);
             properties(cliRequest);
+            help(cliRequest);
             logging(cliRequest);
             container(cliRequest);
             configure(cliRequest);
@@ -266,9 +267,11 @@ void cli(CliRequest cliRequest)
             AbstractLoggingSpy.instance().append(MvndHelpFormatter.displayHelp(cliManager));
             throw e;
         }
+    }
 
+    private void help(CliRequest cliRequest) throws Exception {
         if (cliRequest.commandLine.hasOption(CLIManager.HELP)) {
-            AbstractLoggingSpy.instance().append(MvndHelpFormatter.displayHelp(cliManager));
+            AbstractLoggingSpy.instance().append(MvndHelpFormatter.displayHelp(new CLIManager()));
             throw new ExitException(0);
         }
 

daemon/src/main/java/org/apache/maven/cli/MvndHelpFormatter.java

@@ -17,6 +17,7 @@
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
+import java.io.PrintWriter;
 import java.io.UnsupportedEncodingException;
 import java.nio.charset.StandardCharsets;
 import java.util.List;
@@ -47,9 +48,15 @@ static String toPlainText(String javadocText) {
      * @return            the string containing the help message
      */
     public static String displayHelp(CLIManager cliManager) {
+        int terminalWidth = Environment.MVND_TERMINAL_WIDTH.asInt();
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         try (PrintStream out = new PrintStream(baos, false, StandardCharsets.UTF_8.name())) {
-            cliManager.displayHelp(out);
+            out.println();
+            PrintWriter pw = new PrintWriter(out);
+            HelpFormatter formatter = new HelpFormatter();
+            formatter.printHelp(pw, terminalWidth, "mvn [options] [<goal(s)>] [<phase(s)>]", "\nOptions:", cliManager.options,
+                    1, 3, "\n", false);
+            pw.flush();
         } catch (UnsupportedEncodingException e) {
             throw new RuntimeException(e);
         }
@@ -68,7 +75,7 @@ public static String displayHelp(CLIManager cliManager) {
                     final Environment env = entry.getEntry();
                     help.append(lineSeparator);
                     int indentPos = help.length() + indent.length();
-                    int lineEnd = help.length() + HelpFormatter.DEFAULT_WIDTH;
+                    int lineEnd = help.length() + terminalWidth;
                     spaces(help, HelpFormatter.DEFAULT_LEFT_PAD);
                     help
                             .append("-D")
@@ -92,7 +99,7 @@ public static String displayHelp(CLIManager cliManager) {
                     help.append(' ');
 
                     spaces(help, indentPos - help.length());
-                    wrap(help, toPlainText(entry.getJavaDoc()), HelpFormatter.DEFAULT_WIDTH, lineEnd, indent);
+                    wrap(help, toPlainText(entry.getJavaDoc()), terminalWidth, lineEnd, indent);
 
                     indentedLine(help, "Default", env.getDefault(), indent);
                     indentedLine(help, "Env. variable", env.getEnvironmentVariable(), indent);
@@ -110,11 +117,11 @@ public static String displayHelp(CLIManager cliManager) {
                     final OptionType type = entry.getEntry();
                     help.append(lineSeparator);
                     int indentPos = help.length() + indent.length();
-                    int lineEnd = help.length() + HelpFormatter.DEFAULT_WIDTH;
+                    int lineEnd = help.length() + terminalWidth;
                     spaces(help, HelpFormatter.DEFAULT_LEFT_PAD);
                     help.append(type.name().toLowerCase(Locale.ROOT));
                     spaces(help, indentPos - help.length());
-                    wrap(help, toPlainText(entry.getJavaDoc()), HelpFormatter.DEFAULT_WIDTH, lineEnd, indent);
+                    wrap(help, toPlainText(entry.getJavaDoc()), terminalWidth, lineEnd, indent);
                 });
 
         return help.toString();
@@ -123,11 +130,12 @@ public static String displayHelp(CLIManager cliManager) {
     private static void indentedLine(final StringBuilder stringBuilder, String key, final String value, final String indent) {
         int lineEnd;
         if (value != null) {
-            lineEnd = stringBuilder.length() + HelpFormatter.DEFAULT_WIDTH;
+            int terminalWidth = Environment.MVND_TERMINAL_WIDTH.asInt();
+            lineEnd = stringBuilder.length() + terminalWidth;
             stringBuilder
                     .append(System.lineSeparator())
                     .append(indent);
-            wrap(stringBuilder, key + ": " + value, HelpFormatter.DEFAULT_WIDTH, lineEnd, indent);
+            wrap(stringBuilder, key + ": " + value, terminalWidth, lineEnd, indent);
         }
     }
 

integration-tests/src/test/java/org/mvndaemon/mvnd/assertj/TestClientOutput.java

@@ -57,6 +57,11 @@ public void describeTerminal() {
         accept(Message.display("Test terminal"));
     }
 
+    @Override
+    public int getTerminalWidth() {
+        return 74;
+    }
+
     public List<Message> getMessages() {
         return messages;
     }

integration-tests/src/test/java/org/mvndaemon/mvnd/junit/NativeTestClient.java

@@ -70,6 +70,7 @@ public ExecutionResult execute(ClientOutput output, List<String> args) throws In
             final String threads = parameters.threads();
             Environment.MVND_THREADS.appendAsCommandLineOption(cmd::add, threads);
         }
+        Environment.MVND_TERMINAL_WIDTH.appendAsCommandLineOption(cmd::add, Integer.toString(output.getTerminalWidth()));
 
         final ProcessBuilder builder = new ProcessBuilder(cmd.toArray(new String[0]))
                 .directory(parameters.userDir().toFile()) //