Bump version to 0.62

PS1 is not supposed to be an env var and should be shell-specific.
We will set it appropriately with the init files of the shells.

.gitignore

@@ -33,6 +33,8 @@ local.properties
 .idea/scopes/scope_settings.xml
 .idea/vcs.xml
 .idea/dictionaries/
+.idea/caches/
+.idea/codeStyles/
 *.iml
 
 # OS-specific files

.idea/gradle.xml

@@ -10,6 +10,8 @@
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
+            <option value="$PROJECT_DIR$/terminal-emulator" />
+            <option value="$PROJECT_DIR$/terminal-view" />
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />

.travis.yml

@@ -12,13 +12,14 @@ android:
   components:
     - platform-tools
     - tools
-    - build-tools-25.0.2
+    - build-tools-27.0.3
-    - android-25
+    - android-27
     - extra-android-m2repository
 
 before_install:
   - git clone https://github.com/urho3d/android-ndk.git $HOME/android-ndk
   - export ANDROID_NDK_HOME=$HOME/android-ndk
+  - yes | sdkmanager "platforms;android-27"
 
 script:
   - ./gradlew testDebugUnitTest

LICENSE.md

@@ -0,0 +1,3 @@
+Released under [the GPLv3 license](https://www.gnu.org/licenses/gpl.html).
+
+Contains code from `Terminal Emulator for Android` by which is released under [the Apache License 2.0](https://www.apache.org/licenses/).

README.md

@@ -7,15 +7,14 @@ Termux app
 
 * [Termux on Google Play Store](https://play.google.com/store/apps/details?id=com.termux)
 * [Termux on F-Droid](https://f-droid.org/repository/browse/?fdid=com.termux)
-* [Termux Help](http://termux.com/help/)
+* [Termux Facebook](https://facebook.com/termux/)
 * [Termux Google+ community](http://termux.com/community/)
+* [Termux Help](http://termux.com/help/)
+* [Termux Twitter](http://twitter.com/termux/)
+* [Termux Wiki](https://wiki.termux.com/wiki/)  
 
 Note that this repository is for the app itself (the user interface and the terminal emulation). For the packages installable inside the app, see [termux/termux-packages](https://github.com/termux/termux-packages)
 
-License
-=======
-Released under [the GPLv3 license](https://www.gnu.org/licenses/gpl.html). Contains code from `Terminal Emulator for Android` which is released under [the Apache License 2.0](https://www.apache.org/licenses/).
-
 Terminal resources
 ==================
 * [XTerm control sequences](http://invisible-island.net/xterm/ctlseqs/ctlseqs.html)

app/build.gradle

@@ -1,30 +1,20 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
+    compileSdkVersion 27
-    buildToolsVersion "25.0.2"
 
     dependencies {
-        compile 'com.android.support:support-annotations:25.1.0'
+        implementation 'com.android.support:support-annotations:27.1.1'
-        compile "com.android.support:support-v4:25.1.0"
+        implementation "com.android.support:support-core-ui:27.1.1"
+        implementation project(":terminal-view")
     }
 
     defaultConfig {
         applicationId "com.termux"
         minSdkVersion 21
-        targetSdkVersion 25
+        targetSdkVersion 27
-        versionCode 48
+        versionCode 62
-        versionName "0.48"
+        versionName "0.62"
-
-        externalNativeBuild {
-            ndkBuild {
-                cFlags "-std=c11", "-Wall", "-Wextra", "-Werror", "-Os", "-fno-stack-protector", "-Wl,--gc-sections"
-            }
-        }
-
-        ndk {
-            abiFilters 'x86', 'x86_64', 'armeabi-v7a', 'arm64-v8a'
-        }
     }
 
     buildTypes {
@@ -34,14 +24,8 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
-
-    externalNativeBuild {
-        ndkBuild {
-            path "src/main/jni/Android.mk"
-        }
-    }
 }
 
 dependencies {
-    testCompile 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.12'
 }

app/proguard-rules.pro

@@ -7,11 +7,5 @@
 # For more details, see
 #   http://developer.android.com/guide/developing/tools/proguard.html
 
-# Add any project specific keep options here:
+-renamesourcefileattribute SourceFile
-
+-keepattributes SourceFile,LineNumberTable
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}

app/src/androidTest/java/com/termux/ApplicationTest.java

@@ -1,13 +0,0 @@
-package com.termux;
-
-import android.app.Application;
-import android.test.ApplicationTestCase;
-
-/**
- * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
- */
-public class ApplicationTest extends ApplicationTestCase<Application> {
-    public ApplicationTest() {
-        super(Application.class);
-    }
-}

app/src/main/AndroidManifest.xml

@@ -1,4 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.termux"
     android:installLocation="internalOnly"
     android:sharedUserId="com.termux"
@@ -13,6 +14,7 @@
     <uses-permission android:name="android.permission.VIBRATE" />
 
     <application
+        android:extractNativeLibs="true"
         android:allowBackup="true"
         android:fullBackupContent="@xml/backupscheme"
         android:icon="@mipmap/ic_launcher"
@@ -22,10 +24,15 @@
         android:theme="@style/Theme.Termux"
         android:supportsRtl="false" >
 
+        <!-- This (or rather, value 2.1 or higher) is needed to make the Samsung Galaxy S8
+             mark the app with "This app is optimized to run in full screen." -->
+        <meta-data android:name="android.max_aspect" android:value="10.0" />
+
         <activity
             android:name="com.termux.app.TermuxActivity"
             android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
             android:launchMode="singleTask"
+            android:resizeableActivity="true"
             android:windowSoftInputMode="adjustResize|stateAlwaysVisible" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -43,6 +50,7 @@
             android:exported="false"
             android:theme="@android:style/Theme.Material.Light.DarkActionBar"
             android:parentActivityName=".app.TermuxActivity"
+            android:resizeableActivity="true"
             android:label="@string/application_name" />
 
         <activity
@@ -50,6 +58,7 @@
             android:label="@string/application_name"
             android:taskAffinity="com.termux.filereceiver"
             android:excludeFromRecents="true"
+            android:resizeableActivity="true"
             android:noHistory="true">
             <!-- Accept multiple file types when sending. -->
             <intent-filter>
@@ -64,7 +73,7 @@
                 <data android:mimeType="video/*" />
             </intent-filter>
             <!-- Be more restrictive for viewing files, restricting ourselves to text files. -->
-            <intent-filter>
+            <intent-filter tools:ignore="AppLinkUrlError">
                 <action android:name="android.intent.action.VIEW"/>
                 <category android:name="android.intent.category.DEFAULT" />
                 <data android:mimeType="text/*" />
@@ -75,6 +84,18 @@
             </intent-filter>
         </activity>
 
+        <activity-alias
+            android:name=".HomeActivity"
+            android:targetActivity="com.termux.app.TermuxActivity">
+
+            <!-- Launch activity automatically on boot on Android Things devices -->
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.IOT_LAUNCHER"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+        </activity-alias>
+
         <provider
             android:name=".filepicker.TermuxDocumentsProvider"
             android:authorities="com.termux.documents"
@@ -98,6 +119,7 @@
                   android:grantUriPermissions="true"
                   android:name="com.termux.app.TermuxOpenReceiver$ContentProvider" />
 
+        <meta-data android:name="com.sec.android.support.multiwindow" android:value="true" />
     </application>
 
 </manifest>

app/src/main/java/com/termux/app/BackgroundJob.java

@@ -111,13 +111,13 @@ public final class BackgroundJob {
             final String pathEnv = "PATH=" + System.getenv("PATH");
             return new String[]{termEnv, homeEnv, prefixEnv, androidRootEnv, androidDataEnv, pathEnv, externalStorageEnv};
         } else {
-            final String ps1Env = "PS1=$ ";
             final String ldEnv = "LD_LIBRARY_PATH=" + TermuxService.PREFIX_PATH + "/lib";
             final String langEnv = "LANG=en_US.UTF-8";
             final String pathEnv = "PATH=" + TermuxService.PREFIX_PATH + "/bin:" + TermuxService.PREFIX_PATH + "/bin/applets";
             final String pwdEnv = "PWD=" + cwd;
+            final String tmpdirEnv = "TMPDIR=" + TermuxService.PREFIX_PATH + "/tmp";
 
-            return new String[]{termEnv, homeEnv, prefixEnv, ps1Env, ldEnv, langEnv, pathEnv, pwdEnv, androidRootEnv, androidDataEnv, externalStorageEnv};
+            return new String[]{termEnv, homeEnv, prefixEnv, ldEnv, langEnv, pathEnv, pwdEnv, androidRootEnv, androidDataEnv, externalStorageEnv, tmpdirEnv};
         }
     }
 
@@ -158,7 +158,6 @@ public final class BackgroundJob {
                             if (c == ' ' || c == '\n') {
                                 if (builder.length() == 0) {
                                     // Skip whitespace after shebang.
-                                    continue;
                                 } else {
                                     // End of shebang.
                                     String executable = builder.toString();

app/src/main/java/com/termux/app/ExtraKeysView.java

@@ -2,11 +2,19 @@ package com.termux.app;
 
 import android.content.Context;
 import android.util.AttributeSet;
+
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.ScheduledExecutorService;
+
 import android.view.Gravity;
+import android.view.HapticFeedbackConstants;
 import android.view.KeyEvent;
+import android.view.MotionEvent;
 import android.view.View;
 import android.widget.Button;
 import android.widget.GridLayout;
+import android.widget.PopupWindow;
 import android.widget.ToggleButton;
 
 import com.termux.R;
@@ -20,6 +28,8 @@ import com.termux.view.TerminalView;
 public final class ExtraKeysView extends GridLayout {
 
     private static final int TEXT_COLOR = 0xFFFFFFFF;
+    private static final int BUTTON_COLOR = 0xFF000000;
+    private static final int BUTTON_PRESSED_COLOR = 0xFF888888;
 
     public ExtraKeysView(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -37,16 +47,28 @@ public final class ExtraKeysView extends GridLayout {
             case "TAB":
                 keyCode = KeyEvent.KEYCODE_TAB;
                 break;
-            case "▲":
+            case "HOME":
+                keyCode = KeyEvent.KEYCODE_MOVE_HOME;
+                break;
+            case "END":
+                keyCode = KeyEvent.KEYCODE_MOVE_END;
+                break;
+            case "PGUP":
+                keyCode = KeyEvent.KEYCODE_PAGE_UP;
+                break;
+            case "PGDN":
+                keyCode = KeyEvent.KEYCODE_PAGE_DOWN;
+                break;
+            case "↑":
                 keyCode = KeyEvent.KEYCODE_DPAD_UP;
                 break;
-            case "◀":
+            case "←":
                 keyCode = KeyEvent.KEYCODE_DPAD_LEFT;
                 break;
-            case "▶":
+            case "→":
                 keyCode = KeyEvent.KEYCODE_DPAD_RIGHT;
                 break;
-            case "▼":
+            case "↓":
                 keyCode = KeyEvent.KEYCODE_DPAD_DOWN;
                 break;
             case "―":
@@ -56,11 +78,11 @@ public final class ExtraKeysView extends GridLayout {
                 chars = keyName;
         }
 
+        TerminalView terminalView = view.findViewById(R.id.terminal_view);
         if (keyCode > 0) {
-            view.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, keyCode));
+            terminalView.onKeyDown(keyCode, new KeyEvent(KeyEvent.ACTION_UP, keyCode));
-            view.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, keyCode));
+//          view.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, keyCode));
         } else {
-            TerminalView terminalView = (TerminalView) view.findViewById(R.id.terminal_view);
             TerminalSession session = terminalView.getCurrentSession();
             if (session != null) session.write(chars);
         }
@@ -69,6 +91,9 @@ public final class ExtraKeysView extends GridLayout {
     private ToggleButton controlButton;
     private ToggleButton altButton;
     private ToggleButton fnButton;
+    private ScheduledExecutorService scheduledExecutor;
+    private PopupWindow popupWindow;
+    private int longPressCount;
 
     public boolean readControlButton() {
         if (controlButton.isPressed()) return true;
@@ -100,24 +125,47 @@ public final class ExtraKeysView extends GridLayout {
         return result;
     }
 
+    void popup(View view, String text) {
+        int width = view.getMeasuredWidth();
+        int height = view.getMeasuredHeight();
+        Button button = new Button(getContext(), null, android.R.attr.buttonBarButtonStyle);
+        button.setText(text);
+        button.setTextColor(TEXT_COLOR);
+        button.setPadding(0, 0, 0, 0);
+        button.setMinHeight(0);
+        button.setMinWidth(0);
+        button.setMinimumWidth(0);
+        button.setMinimumHeight(0);
+        button.setWidth(width);
+        button.setHeight(height);
+        button.setBackgroundColor(BUTTON_PRESSED_COLOR);
+        popupWindow = new PopupWindow(this);
+        popupWindow.setWidth(LayoutParams.WRAP_CONTENT);
+        popupWindow.setHeight(LayoutParams.WRAP_CONTENT);
+        popupWindow.setContentView(button);
+        popupWindow.setOutsideTouchable(true);
+        popupWindow.setFocusable(false);
+        popupWindow.showAsDropDown(view, 0, -2 * height);
+    }
+
     void reload() {
         altButton = controlButton = null;
         removeAllViews();
 
         String[][] buttons = {
-            {"ESC", "CTRL", "ALT", "TAB", "―", "/", "|"}
+            {"ESC", "/", "―", "HOME", "↑", "END", "PGUP"},
+            {"TAB", "CTRL", "ALT", "←", "↓", "→", "PGDN"}
         };
 
         final int rows = buttons.length;
-        final int cols = buttons[0].length;
+        final int[] cols = {buttons[0].length, buttons[1].length};
 
         setRowCount(rows);
-        setColumnCount(cols);
+        setColumnCount(cols[0]);
 
         for (int row = 0; row < rows; row++) {
-            for (int col = 0; col < cols; col++) {
+            for (int col = 0; col < cols[row]; col++) {
                 final String buttonText = buttons[row][col];
-
                 Button button;
                 switch (buttonText) {
                     case "CTRL":
@@ -139,11 +187,13 @@ public final class ExtraKeysView extends GridLayout {
 
                 button.setText(buttonText);
                 button.setTextColor(TEXT_COLOR);
+                button.setPadding(0, 0, 0, 0);
 
                 final Button finalButton = button;
                 button.setOnClickListener(new OnClickListener() {
                     @Override
                     public void onClick(View v) {
+                        finalButton.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP);
                         View root = getRootView();
                         switch (buttonText) {
                             case "CTRL":
@@ -160,12 +210,69 @@ public final class ExtraKeysView extends GridLayout {
                     }
                 });
 
-                GridLayout.LayoutParams param = new GridLayout.LayoutParams();
+                button.setOnTouchListener(new OnTouchListener() {
-                param.height = param.width = 0;
+                    @Override
-                param.rightMargin = param.topMargin = 0;
+                    public boolean onTouch(View v, MotionEvent event) {
+                        final View root = getRootView();
+                        switch (event.getAction()) {
+                            case MotionEvent.ACTION_DOWN:
+                                longPressCount = 0;
+                                v.setBackgroundColor(BUTTON_PRESSED_COLOR);
+                                if ("↑↓←→".contains(buttonText)) {
+                                    scheduledExecutor = Executors.newSingleThreadScheduledExecutor();
+                                    scheduledExecutor.scheduleWithFixedDelay(new Runnable() {
+                                        @Override
+                                        public void run() {
+                                            longPressCount++;
+                                            sendKey(root, buttonText);
+                                        }
+                                    }, 400, 80, TimeUnit.MILLISECONDS);
+                                }
+                                return true;
+                            case MotionEvent.ACTION_MOVE:
+                                if ("―/".contains(buttonText)) {
+                                    if (popupWindow == null && event.getY() < 0) {
+                                        v.setBackgroundColor(BUTTON_COLOR);
+                                        String text = "―".equals(buttonText) ? "|" : "\\";
+                                        popup(v, text);
+                                    }
+                                    if (popupWindow != null && event.getY() > 0) {
+                                        v.setBackgroundColor(BUTTON_PRESSED_COLOR);
+                                        popupWindow.dismiss();
+                                        popupWindow = null;
+                                    }
+                                }
+                                return true;
+                            case MotionEvent.ACTION_UP:
+                            case MotionEvent.ACTION_CANCEL:
+                                v.setBackgroundColor(BUTTON_COLOR);
+                                if (scheduledExecutor != null) {
+                                    scheduledExecutor.shutdownNow();
+                                    scheduledExecutor = null;
+                                }
+                                if (longPressCount == 0) {
+                                    if (popupWindow != null && "―/".contains(buttonText)) {
+                                        popupWindow.setContentView(null);
+                                        popupWindow.dismiss();
+                                        popupWindow = null;
+                                        sendKey(root, "―".equals(buttonText) ? "|" : "\\");
+                                    } else {
+                                        v.performClick();
+                                    }
+                                }
+                                return true;
+                            default:
+                                return true;
+                        }
+
+                    }
+                });
+
+                LayoutParams param = new GridLayout.LayoutParams();
+                param.width = param.height = 0;
+                param.setMargins(0, 0, 0, 0);
                 param.setGravity(Gravity.LEFT);
-                float weight = "▲▼◀▶".contains(buttonText) ? 0.7f : 1.f;
+                param.columnSpec = GridLayout.spec(col, GridLayout.FILL, 1.f);
-                param.columnSpec = GridLayout.spec(col, GridLayout.FILL, weight);
                 param.rowSpec = GridLayout.spec(row, GridLayout.FILL, 1.f);
                 button.setLayoutParams(param);
 

app/src/main/java/com/termux/app/FullScreenHelper.java

@@ -1,67 +0,0 @@
-package com.termux.app;
-
-import android.graphics.Color;
-import android.graphics.drawable.ColorDrawable;
-import android.os.Build;
-import android.view.View;
-
-import com.termux.R;
-
-/**
- * Utility to manage full screen immersive mode.
- * <p/>
- * See https://code.google.com/p/android/issues/detail?id=5497
- */
-final class FullScreenHelper {
-
-    private boolean mEnabled = false;
-    final TermuxActivity mActivity;
-
-    public FullScreenHelper(TermuxActivity activity) {
-        this.mActivity = activity;
-    }
-
-    public void setImmersive(boolean enabled) {
-        if (enabled == mEnabled) return;
-        mEnabled = enabled;
-
-        View decorView = mActivity.getWindow().getDecorView();
-
-        if (enabled) {
-            decorView.setOnSystemUiVisibilityChangeListener
-                (new View.OnSystemUiVisibilityChangeListener() {
-                    @Override
-                    public void onSystemUiVisibilityChange(int visibility) {
-                        if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
-                            if (mActivity.mSettings.isShowExtraKeys()) {
-                                mActivity.findViewById(R.id.viewpager).setVisibility(View.VISIBLE);
-                            }
-                            setImmersiveMode();
-                        } else {
-                            mActivity.findViewById(R.id.viewpager).setVisibility(View.GONE);
-                        }
-                    }
-                });
-            setImmersiveMode();
-        } else {
-            decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
-            decorView.setOnSystemUiVisibilityChangeListener(null);
-        }
-    }
-
-    private static boolean isColorLight(int color) {
-        double darkness = 1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255;
-        return darkness < 0.5;
-    }
-
-    void setImmersiveMode() {
-        int flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
-            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
-            | View.SYSTEM_UI_FLAG_FULLSCREEN;
-        int color = ((ColorDrawable) mActivity.getWindow().getDecorView().getBackground()).getColor();
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && isColorLight(color))
-            flags |= View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
-        mActivity.getWindow().getDecorView().setSystemUiVisibility(flags);
-    }
-
-}

app/src/main/java/com/termux/app/TermuxActivity.java

@@ -49,8 +49,6 @@ import android.view.View.OnClickListener;
 import android.view.View.OnLongClickListener;
 import android.view.ViewGroup;
 import android.view.WindowManager;
-import android.view.animation.Animation;
-import android.view.animation.AnimationUtils;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
@@ -75,6 +73,7 @@ import java.io.InputStream;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashSet;
+import java.util.List;
 import java.util.Properties;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -97,7 +96,6 @@ public final class TermuxActivity extends Activity implements ServiceConnection
     private static final int CONTEXTMENU_KILL_PROCESS_ID = 4;
     private static final int CONTEXTMENU_RESET_TERMINAL_ID = 5;
     private static final int CONTEXTMENU_STYLING_ID = 6;
-    private static final int CONTEXTMENU_TOGGLE_FULLSCREEN_ID = 7;
     private static final int CONTEXTMENU_HELP_ID = 8;
 
     private static final int MAX_SESSIONS = 8;
@@ -113,8 +111,6 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 
     ExtraKeysView mExtraKeysView;
 
-    final FullScreenHelper mFullScreenHelper = new FullScreenHelper(this);
-
     TermuxPreferences mSettings;
 
     /**
@@ -159,7 +155,6 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 
     void checkForFontAndColors() {
         try {
-            // Hard-coded paths since this file is used also in Termux:Float.
             @SuppressLint("SdCardPath") File fontFile = new File("/data/data/com.termux/files/home/.termux/font.ttf");
             @SuppressLint("SdCardPath") File colorsFile = new File("/data/data/com.termux/files/home/.termux/colors.properties");
 
@@ -214,14 +209,13 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         mSettings = new TermuxPreferences(this);
 
         setContentView(R.layout.drawer_layout);
-        mTerminalView = (TerminalView) findViewById(R.id.terminal_view);
+        mTerminalView = findViewById(R.id.terminal_view);
-        mTerminalView.setOnKeyListener(new TermuxKeyListener(this));
+        mTerminalView.setOnKeyListener(new TermuxViewClient(this));
 
         mTerminalView.setTextSize(mSettings.getFontSize());
-        mFullScreenHelper.setImmersive(mSettings.isFullScreen());
         mTerminalView.requestFocus();
 
-        final ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
+        final ViewPager viewPager = findViewById(R.id.viewpager);
         if (mSettings.isShowExtraKeys()) viewPager.setVisibility(View.VISIBLE);
 
         viewPager.setAdapter(new PagerAdapter() {
@@ -231,19 +225,20 @@ public final class TermuxActivity extends Activity implements ServiceConnection
             }
 
             @Override
-            public boolean isViewFromObject(View view, Object object) {
+            public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
                 return view == object;
             }
 
+            @NonNull
             @Override
-            public Object instantiateItem(ViewGroup collection, int position) {
+            public Object instantiateItem(@NonNull ViewGroup collection, int position) {
                 LayoutInflater inflater = LayoutInflater.from(TermuxActivity.this);
                 View layout;
                 if (position == 0) {
                     layout = mExtraKeysView = (ExtraKeysView) inflater.inflate(R.layout.extra_keys_main, collection, false);
                 } else {
                     layout = inflater.inflate(R.layout.extra_keys_right, collection, false);
-                    final EditText editText = (EditText) layout.findViewById(R.id.text_input);
+                    final EditText editText = layout.findViewById(R.id.text_input);
                     editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
                         @Override
                         public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
@@ -267,7 +262,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
             }
 
             @Override
-            public void destroyItem(ViewGroup collection, int position, Object view) {
+            public void destroyItem(@NonNull ViewGroup collection, int position, @NonNull Object view) {
                 collection.removeView((View) view);
             }
         });
@@ -278,7 +273,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
                 if (position == 0) {
                     mTerminalView.requestFocus();
                 } else {
-                    final EditText editText = (EditText) viewPager.findViewById(R.id.text_input);
+                    final EditText editText = viewPager.findViewById(R.id.text_input);
                     if (editText != null) editText.requestFocus();
                 }
             }
@@ -342,7 +337,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
     }
 
     void toggleShowExtraKeys() {
-        final ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
+        final ViewPager viewPager = findViewById(R.id.viewpager);
         final boolean showNow = mSettings.toggleShowExtraKeys(TermuxActivity.this);
         viewPager.setVisibility(showNow ? View.VISIBLE : View.GONE);
         if (showNow && viewPager.getCurrentItem() == 1) {
@@ -399,7 +394,6 @@ public final class TermuxActivity extends Activity implements ServiceConnection
             @Override
             public void onClipboardText(TerminalSession session, String text) {
                 if (!mIsVisible) return;
-                showToast("Clipboard:\n\"" + text + "\"", false);
                 ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
                 clipboard.setPrimaryClip(new ClipData(null, new String[]{"text/plain"}, new ClipData.Item(text)));
             }
@@ -428,7 +422,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
             }
         };
 
-        ListView listView = (ListView) findViewById(R.id.left_drawer_list);
+        ListView listView = findViewById(R.id.left_drawer_list);
         mListViewAdapter = new ArrayAdapter<TerminalSession>(getApplicationContext(), R.layout.line_in_drawer, mTermService.getSessions()) {
             final StyleSpan boldSpan = new StyleSpan(Typeface.BOLD);
             final StyleSpan italicSpan = new StyleSpan(Typeface.ITALIC);
@@ -445,7 +439,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
                 TerminalSession sessionAtRow = getItem(position);
                 boolean sessionRunning = sessionAtRow.isRunning();
 
-                TextView firstLineView = (TextView) row.findViewById(R.id.row_line);
+                TextView firstLineView = row.findViewById(R.id.row_line);
 
                 String name = sessionAtRow.mSessionName;
                 String sessionTitle = sessionAtRow.getTitle();
@@ -541,10 +535,8 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 
     @Override
     public void onServiceDisconnected(ComponentName name) {
-        if (mTermService != null) {
+        // Respect being stopped from the TermuxService notification action.
-            // Respect being stopped from the TermuxService notification action.
+        finish();
-            finish();
-        }
     }
 
     @Nullable
@@ -648,7 +640,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         final int indexOfSession = mTermService.getSessions().indexOf(session);
         showToast(toToastTitle(session), false);
         mListViewAdapter.notifyDataSetChanged();
-        final ListView lv = ((ListView) findViewById(R.id.left_drawer_list));
+        final ListView lv = findViewById(R.id.left_drawer_list);
         lv.setItemChecked(indexOfSession, true);
         lv.smoothScrollToPosition(indexOfSession);
     }
@@ -662,7 +654,6 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         menu.add(Menu.NONE, CONTEXTMENU_SHARE_TRANSCRIPT_ID, Menu.NONE, R.string.select_all_and_share);
         menu.add(Menu.NONE, CONTEXTMENU_RESET_TERMINAL_ID, Menu.NONE, R.string.reset_terminal);
         menu.add(Menu.NONE, CONTEXTMENU_KILL_PROCESS_ID, Menu.NONE, getResources().getString(R.string.kill_process, getCurrentTermSession().getPid())).setEnabled(currentSession.isRunning());
-        menu.add(Menu.NONE, CONTEXTMENU_TOGGLE_FULLSCREEN_ID, Menu.NONE, R.string.toggle_fullscreen).setCheckable(true).setChecked(mSettings.isFullScreen());
         menu.add(Menu.NONE, CONTEXTMENU_STYLING_ID, Menu.NONE, R.string.style_terminal);
         menu.add(Menu.NONE, CONTEXTMENU_HELP_ID, Menu.NONE, R.string.help);
     }
@@ -796,11 +787,8 @@ public final class TermuxActivity extends Activity implements ServiceConnection
                             }
                         }).setNegativeButton(android.R.string.cancel, null).show();
                 }
-            }
-            return true;
-            case CONTEXTMENU_TOGGLE_FULLSCREEN_ID:
-                toggleImmersive();
                 return true;
+            }
             case CONTEXTMENU_HELP_ID:
                 startActivity(new Intent(this, TermuxHelpActivity.class));
                 return true;
@@ -816,12 +804,6 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         }
     }
 
-    void toggleImmersive() {
-        boolean newValue = !mSettings.isFullScreen();
-        mSettings.setFullScreen(this, newValue);
-        mFullScreenHelper.setImmersive(newValue);
-    }
-
     void changeFontSize(boolean increase) {
         mSettings.changeFontSize(this, increase);
         mTerminalView.setTextSize(mSettings.getFontSize());
@@ -840,9 +822,8 @@ public final class TermuxActivity extends Activity implements ServiceConnection
     public TerminalSession getStoredCurrentSessionOrLast() {
         TerminalSession stored = TermuxPreferences.getCurrentSession(this);
         if (stored != null) return stored;
-        int numberOfSessions = mTermService.getSessions().size();
+        List<TerminalSession> sessions = mTermService.getSessions();
-        if (numberOfSessions == 0) return null;
+        return sessions.isEmpty() ? null : sessions.get(sessions.size() - 1);
-        return mTermService.getSessions().get(numberOfSessions - 1);
     }
 
     /** Show a toast and dismiss the last one if still visible. */

app/src/main/java/com/termux/app/TermuxHelpActivity.java

@@ -39,7 +39,7 @@ public final class TermuxHelpActivity extends Activity {
         mWebView.setWebViewClient(new WebViewClient() {
             @Override
             public boolean shouldOverrideUrlLoading(WebView view, String url) {
-                if (url.startsWith("https://termux.com")) {
+                if (url.startsWith("https://wiki.termux.com")) {
                     // Inline help.
                     setContentView(progressLayout);
                     return false;
@@ -60,7 +60,7 @@ public final class TermuxHelpActivity extends Activity {
                 setContentView(mWebView);
             }
         });
-        mWebView.loadUrl("https://termux.com/help.html");
+        mWebView.loadUrl("https://wiki.termux.com/wiki/Main_Page");
     }
 
     @Override

app/src/main/java/com/termux/app/TermuxInstaller.java

@@ -43,7 +43,7 @@ import java.util.zip.ZipInputStream;
  * (4) The architecture is determined and an appropriate bootstrap zip url is determined in {@link #determineZipUrl()}.
  * <p/>
  * (5) The zip, containing entries relative to the $PREFIX, is is downloaded and extracted by a zip input stream
- * continously encountering zip file entries:
+ * continuously encountering zip file entries:
  * <p/>
  * (5.1) If the zip entry encountered is SYMLINKS.txt, go through it and remember all symlinks to setup.
  * <p/>
@@ -228,9 +228,13 @@ final class TermuxInstaller {
                 try {
                     File storageDir = new File(TermuxService.HOME_PATH, "storage");
 
-                    if (storageDir.exists() && !storageDir.delete()) {
+                    if (storageDir.exists()) {
-                        Log.e(LOG_TAG, "Could not delete old $HOME/storage");
+                        try {
-                        return;
+                            deleteFolder(storageDir);
+                        } catch (Exception e) {
+                            Log.e(LOG_TAG, "Could not delete old $HOME/storage, " + e.getMessage());
+                            return;
+                        }
                     }
 
                     if (!storageDir.mkdirs()) {

app/src/main/java/com/termux/app/TermuxOpenReceiver.java

@@ -8,8 +8,10 @@ import android.content.Intent;
 import android.database.Cursor;
 import android.database.MatrixCursor;
 import android.net.Uri;
+import android.os.Environment;
 import android.os.ParcelFileDescriptor;
 import android.provider.MediaStore;
+import android.support.annotation.NonNull;
 import android.util.Log;
 import android.webkit.MimeTypeMap;
 
@@ -17,6 +19,7 @@ import com.termux.terminal.EmulatorDebug;
 
 import java.io.File;
 import java.io.FileNotFoundException;
+import java.io.IOException;
 
 public class TermuxOpenReceiver extends BroadcastReceiver {
 
@@ -28,23 +31,10 @@ public class TermuxOpenReceiver extends BroadcastReceiver {
             return;
         }
 
-        final boolean isExternalUrl = data.getScheme() != null && !data.getScheme().equals("file");
-        if (isExternalUrl) {
-            Intent viewIntent = new Intent(Intent.ACTION_VIEW, data);
-            viewIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-            try {
-                context.startActivity(viewIntent);
-            } catch (ActivityNotFoundException e) {
-                Log.e(EmulatorDebug.LOG_TAG, "termux-open: No app handles the url " + data);
-            }
-            return;
-        }
-
         final String filePath = data.getPath();
         final String contentTypeExtra = intent.getStringExtra("content-type");
         final boolean useChooser = intent.getBooleanExtra("chooser", false);
         final String intentAction = intent.getAction() == null ? Intent.ACTION_VIEW : intent.getAction();
-
         switch (intentAction) {
             case Intent.ACTION_SEND:
             case Intent.ACTION_VIEW:
@@ -55,6 +45,24 @@ public class TermuxOpenReceiver extends BroadcastReceiver {
                 break;
         }
 
+        final boolean isExternalUrl = data.getScheme() != null && !data.getScheme().equals("file");
+        if (isExternalUrl) {
+            Intent urlIntent = new Intent(intentAction, data);
+            if (intentAction.equals(Intent.ACTION_SEND)) {
+                urlIntent.putExtra(Intent.EXTRA_TEXT, data.toString());
+                urlIntent.setData(null);
+            } else if (contentTypeExtra != null) {
+                urlIntent.setDataAndType(data, contentTypeExtra);
+            }
+            urlIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            try {
+                context.startActivity(urlIntent);
+            } catch (ActivityNotFoundException e) {
+                Log.e(EmulatorDebug.LOG_TAG, "termux-open: No app handles the url " + data);
+            }
+            return;
+        }
+
         final File fileToShare = new File(filePath);
         if (!(fileToShare.isFile() && fileToShare.canRead())) {
             Log.e(EmulatorDebug.LOG_TAG, "termux-open: Not a readable file: '" + fileToShare.getAbsolutePath() + "'");
@@ -106,7 +114,7 @@ public class TermuxOpenReceiver extends BroadcastReceiver {
         }
 
         @Override
-        public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
+        public Cursor query(@NonNull Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
             File file = new File(uri.getPath());
 
             if (projection == null) {
@@ -143,28 +151,38 @@ public class TermuxOpenReceiver extends BroadcastReceiver {
         }
 
         @Override
-        public String getType(Uri uri) {
+        public String getType(@NonNull Uri uri) {
             return null;
         }
 
         @Override
-        public Uri insert(Uri uri, ContentValues values) {
+        public Uri insert(@NonNull Uri uri, ContentValues values) {
             return null;
         }
 
         @Override
-        public int delete(Uri uri, String selection, String[] selectionArgs) {
+        public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {
             return 0;
         }
 
         @Override
-        public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
+        public int update(@NonNull Uri uri, ContentValues values, String selection, String[] selectionArgs) {
             return 0;
         }
 
         @Override
-        public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
+        public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) throws FileNotFoundException {
             File file = new File(uri.getPath());
+            try {
+                String path = file.getCanonicalPath();
+                String storagePath = Environment.getExternalStorageDirectory().getCanonicalPath();
+                // See https://support.google.com/faqs/answer/7496913:
+                if (!(path.startsWith(TermuxService.FILES_PATH) || path.startsWith(storagePath))) {
+                    throw new IllegalArgumentException("Invalid path: " + path);
+                }
+            } catch (IOException e) {
+                throw new IllegalArgumentException(e);
+            }
             return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
         }
     }

app/src/main/java/com/termux/app/TermuxPreferences.java

@@ -32,12 +32,10 @@ final class TermuxPreferences {
     private final int MIN_FONTSIZE;
     private static final int MAX_FONTSIZE = 256;
 
-    private static final String FULLSCREEN_KEY = "fullscreen";
     private static final String SHOW_EXTRA_KEYS_KEY = "show_extra_keys";
     private static final String FONTSIZE_KEY = "fontsize";
     private static final String CURRENT_SESSION_KEY = "current_session";
 
-    private boolean mFullScreen;
     private int mFontSize;
 
     @AsciiBellBehaviour
@@ -56,7 +54,6 @@ final class TermuxPreferences {
         // to prevent invisible text due to zoom be mistake:
         MIN_FONTSIZE = (int) (4f * dipInPixels);
 
-        mFullScreen = prefs.getBoolean(FULLSCREEN_KEY, false);
         mShowExtraKeys = prefs.getBoolean(SHOW_EXTRA_KEYS_KEY, false);
 
         // http://www.google.com/design/spec/style/typography.html#typography-line-height
@@ -72,15 +69,6 @@ final class TermuxPreferences {
         mFontSize = Math.max(MIN_FONTSIZE, Math.min(mFontSize, MAX_FONTSIZE));
     }
 
-    boolean isFullScreen() {
-        return mFullScreen;
-    }
-
-    void setFullScreen(Context context, boolean newValue) {
-        mFullScreen = newValue;
-        PreferenceManager.getDefaultSharedPreferences(context).edit().putBoolean(FULLSCREEN_KEY, newValue).apply();
-    }
-
     boolean isShowExtraKeys() {
         return mShowExtraKeys;
     }

app/src/main/java/com/termux/app/TermuxService.java

@@ -2,6 +2,7 @@ package com.termux.app;
 
 import android.annotation.SuppressLint;
 import android.app.Notification;
+import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
@@ -11,10 +12,10 @@ import android.content.res.Resources;
 import android.net.Uri;
 import android.net.wifi.WifiManager;
 import android.os.Binder;
+import android.os.Build;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.PowerManager;
-import android.support.v4.content.WakefulBroadcastReceiver;
 import android.util.Log;
 import android.widget.ArrayAdapter;
 
@@ -41,6 +42,8 @@ import java.util.List;
  */
 public final class TermuxService extends Service implements SessionChangedCallback {
 
+    private static final String NOTIFICATION_CHANNEL_ID = "termux_notification_channel";
+
     /** Note that this is a symlink on the Android M preview. */
     @SuppressLint("SdCardPath")
     public static final String FILES_PATH = "/data/data/com.termux/files";
@@ -104,7 +107,8 @@ public final class TermuxService extends Service implements SessionChangedCallba
                 mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, EmulatorDebug.LOG_TAG);
                 mWakeLock.acquire();
 
-                WifiManager wm = (WifiManager) getSystemService(Context.WIFI_SERVICE);
+                // http://tools.android.com/tech-docs/lint-in-studio-2-3#TOC-WifiManager-Leak
+                WifiManager wm = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
                 mWifiLock = wm.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, EmulatorDebug.LOG_TAG);
                 mWifiLock.acquire();
 
@@ -152,11 +156,6 @@ public final class TermuxService extends Service implements SessionChangedCallba
             Log.e(EmulatorDebug.LOG_TAG, "Unknown TermuxService action: '" + action + "'");
         }
 
-        if ((flags & START_FLAG_REDELIVERY) == 0) {
-            // Service is started by WBR, not restarted by system, so release the WakeLock from WBR.
-            WakefulBroadcastReceiver.completeWakefulIntent(intent);
-        }
-
         // If this service really do get killed, there is no point restarting it automatically - let the user do on next
         // start of {@link Term):
         return Service.START_NOT_STICKY;
@@ -169,11 +168,12 @@ public final class TermuxService extends Service implements SessionChangedCallba
 
     @Override
     public void onCreate() {
+        setupNotificationChannel();
         startForeground(NOTIFICATION_ID, buildNotification());
     }
 
     /** Update the shown foreground service notification after making any changes that affect it. */
-    private void updateNotification() {
+    void updateNotification() {
         if (mWakeLock == null && mTerminalSessions.isEmpty() && mBackgroundTasks.isEmpty()) {
             // Exit if we are updating after the user disabled all locks with no sessions or tasks running.
             stopSelf();
@@ -207,8 +207,8 @@ public final class TermuxService extends Service implements SessionChangedCallba
         builder.setOngoing(true);
 
         // If holding a wake or wifi lock consider the notification of high priority since it's using power,
-        // otherwise use a minimal priority since this is just a background service notification:
+        // otherwise use a low priority
-        builder.setPriority((wakeLockHeld) ? Notification.PRIORITY_HIGH : Notification.PRIORITY_MIN);
+        builder.setPriority((wakeLockHeld) ? Notification.PRIORITY_HIGH : Notification.PRIORITY_LOW);
 
         // No need to show a timestamp:
         builder.setShowWhen(false);
@@ -216,6 +216,10 @@ public final class TermuxService extends Service implements SessionChangedCallba
         // Background color for small notification icon:
         builder.setColor(0xFF000000);
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            builder.setChannelId(NOTIFICATION_CHANNEL_ID);
+        }
+
         Resources res = getResources();
         Intent exitIntent = new Intent(this, TermuxService.class).setAction(ACTION_STOP_SERVICE);
         builder.addAction(android.R.drawable.ic_delete, res.getString(R.string.notification_action_exit), PendingIntent.getService(this, 0, exitIntent, 0));
@@ -240,7 +244,6 @@ public final class TermuxService extends Service implements SessionChangedCallba
 
         for (int i = 0; i < mTerminalSessions.size(); i++)
             mTerminalSessions.get(i).finishIfRunning();
-        mTerminalSessions.clear();
     }
 
     public List<TerminalSession> getSessions() {
@@ -340,4 +343,17 @@ public final class TermuxService extends Service implements SessionChangedCallba
             }
         });
     }
+
+    private void setupNotificationChannel() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return;
+
+        String channelName = "Termux";
+        String channelDescription = "Notifications from Termux";
+        int importance = NotificationManager.IMPORTANCE_LOW;
+
+        NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName,importance);
+        channel.setDescription(channelDescription);
+        NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
+        manager.createNotificationChannel(channel);
+    }
 }

app/src/main/java/com/termux/app/TermuxViewClient.java

@@ -12,18 +12,18 @@ import android.view.inputmethod.InputMethodManager;
 import com.termux.terminal.KeyHandler;
 import com.termux.terminal.TerminalEmulator;
 import com.termux.terminal.TerminalSession;
-import com.termux.view.TerminalKeyListener;
+import com.termux.view.TerminalViewClient;
 
 import java.util.List;
 
-public final class TermuxKeyListener implements TerminalKeyListener {
+public final class TermuxViewClient implements TerminalViewClient {
 
     final TermuxActivity mActivity;
 
     /** Keeping track of the special keys acting as Ctrl and Fn for the soft keyboard and other hardware keys. */
     boolean mVirtualControlKeyDown, mVirtualFnKeyDown;
 
-    public TermuxKeyListener(TermuxActivity activity) {
+    public TermuxViewClient(TermuxActivity activity) {
         this.mActivity = activity;
     }
 
@@ -73,8 +73,6 @@ public final class TermuxKeyListener implements TerminalKeyListener {
                 mActivity.getDrawer().openDrawer(Gravity.LEFT);
             } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
                 mActivity.getDrawer().closeDrawers();
-            } else if (unicodeChar == 'f'/* full screen */) {
-                mActivity.toggleImmersive();
             } else if (unicodeChar == 'k'/* keyboard */) {
                 InputMethodManager imm = (InputMethodManager) mActivity.getSystemService(Context.INPUT_METHOD_SERVICE);
                 imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
@@ -256,6 +254,11 @@ public final class TermuxKeyListener implements TerminalKeyListener {
         return false;
     }
 
+    @Override
+    public boolean onLongPress(MotionEvent event) {
+        return false;
+    }
+
     /** Handle dedicated volume buttons as virtual keys if applicable. */
     private boolean handleVirtualKeys(int keyCode, KeyEvent event, boolean down) {
         InputDevice inputDevice = event.getDevice();

app/src/main/java/com/termux/filepicker/TermuxDocumentsProvider.java

@@ -195,7 +195,7 @@ public class TermuxDocumentsProvider extends DocumentsProvider {
             final String name = file.getName();
             final int lastDot = name.lastIndexOf('.');
             if (lastDot >= 0) {
-                final String extension = name.substring(lastDot + 1);
+                final String extension = name.substring(lastDot + 1).toLowerCase();
                 final String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
                 if (mime != null) return mime;
             }

app/src/main/res/drawable/ic_service_notification.xml

@@ -9,7 +9,7 @@
 
     <!-- Screen border. -->
     <path android:fillColor="#00000000"
-          android:strokeColor="#000"
+          android:strokeColor="#FFF"
           android:strokeWidth="3"
           android:pathData="M7,4
                             l34,0
@@ -23,7 +23,7 @@
           />
 
     <!-- Block cursor. -->
-    <path android:fillColor="#000"
+    <path android:fillColor="#FFF"
           android:pathData="M14,14
                             l5,0
                             l0,10

app/src/main/res/layout/drawer_layout.xml

@@ -1,7 +1,8 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:orientation="vertical">
+    android:orientation="vertical"
+    android:fitsSystemWindows="true">
 
     <android.support.v4.widget.DrawerLayout
         android:id="@+id/drawer_layout"
@@ -69,7 +70,7 @@
         android:id="@+id/viewpager"
         android:visibility="gone"
         android:layout_width="match_parent"
-        android:layout_height="40dp"
+        android:layout_height="75dp"
         android:background="@android:drawable/screen_background_dark_transparent"
         android:layout_alignParentBottom="true" />
 </RelativeLayout>

app/src/main/res/values/strings.xml

@@ -7,7 +7,6 @@
    <string name="toggle_soft_keyboard">Keyboard</string>
    <string name="reset_terminal">Reset</string>
    <string name="style_terminal">Style</string>
-   <string name="toggle_fullscreen">Fullscreen</string>
    <string name="share_transcript_title">Terminal transcript</string>
    <string name="help">Help</string>
 
@@ -30,10 +29,6 @@
   <string name="select_url_copied_to_clipboard">URL copied to clipboard</string>
   <string name="share_transcript_chooser_title">Send text to:</string>
 
-  <string name="paste_text">Paste</string>
-  <string name="copy_text">Copy</string>
-  <string name="text_selection_more">More…</string>
-
   <string name="kill_process">Kill process (%d)</string>
   <string name="confirm_kill_process">Really kill this session?</string>
 

app/src/main/res/values/styles.xml

@@ -15,6 +15,9 @@
              selecting text on pre-6.0 (non-floating toolbar). -->
         <item name="android:windowActionModeOverlay">true</item>
 
+        <item name="android:windowTranslucentStatus">true</item>
+        <item name="android:windowTranslucentNavigation">true</item>
+
         <!-- https://developer.android.com/training/tv/start/start.html#transition-color -->
         <item name="android:windowAllowReturnTransitionOverlap">true</item>
         <item name="android:windowAllowEnterTransitionOverlap">true</item>

art/feature-graphic.svg

@@ -9,8 +9,7 @@
   - If adding text, use large font sizes.
   - Your graphic may be displayed alone without the app icon.
  -->
-<svg xmlns:svg="http://www.w3.org/2000/svg"
+<svg xmlns="http://www.w3.org/2000/svg"
-     xmlns="http://www.w3.org/2000/svg"
      version="1.1"
      viewBox="0 0 1024 500">
 

art/tv-banner.svg

@@ -7,8 +7,7 @@
   - Text must be included in the image. If your app is available in more
     than one language, you must provide versions of the banner image for each supported language.
  -->
-<svg xmlns:svg="http://www.w3.org/2000/svg"
+<svg xmlns="http://www.w3.org/2000/svg"
-     xmlns="http://www.w3.org/2000/svg"
      version="1.1"
      viewBox="0 0 1280 720">
 

build.gradle

@@ -1,16 +1,16 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:3.1.3'
     }
 }
 
 allprojects {
     repositories {
+        google()
         jcenter()
     }
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,5 @@
-#Sun Dec 04 17:26:05 CET 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.2.1-bin.zip

gradlew

@@ -33,11 +33,11 @@ DEFAULT_JVM_OPTS=""
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -155,7 +155,7 @@ if $cygwin ; then
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }

scripts/bintray-publish.gradle

@@ -0,0 +1,77 @@
+// Start https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle
+group = publishedGroupId // Maven Group ID for the artifact
+install {
+    repositories.mavenInstaller {
+        pom {
+            project {
+                packaging 'aar'
+                groupId publishedGroupId
+                artifactId artifact
+
+                name libraryName
+                description libraryDescription
+                url siteUrl
+
+                licenses {
+                    license {
+                        name 'GNU General Public License version 3'
+                        url 'https://opensource.org/licenses/gpl-3.0.html'
+                    }
+                }
+
+                developers {
+                    developer {
+                        id 'fornwall'
+                        name 'Fredrik Fornwall'
+                        email 'fredrik@fornwall.net'
+                    }
+                }
+                scm {
+                    connection gitUrl
+                    developerConnection gitUrl
+                    url siteUrl
+                }
+            }
+        }
+    }
+}
+// End https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle
+
+// Start https://raw.githubusercontent.com/nuuneoi/JCenter/master/bintrayv1.gradle
+apply plugin: 'com.jfrog.bintray'
+
+version = libraryVersion
+
+task sourcesJar(type: Jar) {
+	classifier = 'sources'
+	from android.sourceSets.main.java.srcDirs
+}
+
+artifacts {
+	archives sourcesJar
+}
+
+bintray {
+	user = System.getenv('BINTRAY_USER')
+	key = System.getenv('BINTRAY_API_KEY')
+
+	configurations = ['archives']
+	pkg {
+		repo = 'maven'
+		name = bintrayName
+		userOrg = 'termux'
+		desc = libraryDescription
+		websiteUrl = siteUrl
+		vcsUrl = gitUrl
+		licenses = ['GPL-3.0']
+		publish = true
+		publicDownloadNumbers = true
+		version {
+			desc = libraryDescription
+			gpg {
+				sign = false //Determines whether to GPG sign the files. The default is false
+				// passphrase = properties.getProperty("bintray.gpg.password")
+			}
+		}
+	}
+}

settings.gradle

@@ -1 +1 @@
-include ':app'
+include ':app', ':terminal-emulator', ':terminal-view'

terminal-emulator/build.gradle

@@ -0,0 +1,61 @@
+plugins {
+    id "com.jfrog.bintray" version "1.7.3"
+    id "com.github.dcendents.android-maven" version "2.0"
+}
+
+apply plugin: 'com.android.library'
+
+ext {
+    bintrayName = 'terminal-emulator'
+    publishedGroupId = 'com.termux'
+    libraryName = 'TerminalEmulator'
+    artifact = 'terminal-emulator'
+    libraryDescription = 'The terminal emulator used in Termux'
+    siteUrl = 'https://github.com/termux/termux'
+    gitUrl = 'https://github.com/termux/termux.git'
+    libraryVersion = '0.52'
+}
+
+android {
+    compileSdkVersion 27
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 27
+
+        externalNativeBuild {
+            ndkBuild {
+                cFlags "-std=c11", "-Wall", "-Wextra", "-Werror", "-Os", "-fno-stack-protector", "-Wl,--gc-sections"
+            }
+        }
+
+        ndk {
+            abiFilters 'x86', 'x86_64', 'armeabi-v7a', 'arm64-v8a'
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    externalNativeBuild {
+        ndkBuild {
+            path "src/main/jni/Android.mk"
+        }
+    }
+}
+
+tasks.withType(Test) {
+    testLogging {
+        events "started", "passed", "skipped", "failed"
+    }
+}
+
+dependencies {
+    testImplementation 'junit:junit:4.12'
+}
+
+apply from: '../scripts/bintray-publish.gradle'

terminal-emulator/proguard-rules.pro

@@ -0,0 +1,25 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/fornwall/lib/android-sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

terminal-emulator/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<manifest package="com.termux.terminal">
+</manifest>

terminal-emulator/src/main/java/com/termux/terminal/TerminalBuffer.java

@@ -3,7 +3,7 @@ package com.termux.terminal;
 /**
  * A circular buffer of {@link TerminalRow}:s which keeps notes about what is visible on a logical screen and the scroll
  * history.
- * <p/>
+ * <p>
  * See {@link #externalToInternalRow(int)} for how to map from logical screen rows to array indices.
  */
 public final class TerminalBuffer {
@@ -92,22 +92,20 @@ public final class TerminalBuffer {
 
     /**
      * Convert a row value from the public external coordinate system to our internal private coordinate system.
-     * <p/>
+     *
-     * <ul>
-     * <li>External coordinate system: -mActiveTranscriptRows to mScreenRows-1, with the screen being 0..mScreenRows-1.
-     * <li>Internal coordinate system: the mScreenRows lines starting at mScreenFirstRow comprise the screen, while the
-     * mActiveTranscriptRows lines ending at mScreenFirstRow-1 form the transcript (as a circular buffer).
-     * </ul>
-     * <p/>
-     * External <---> Internal:
-     * <p/>
      * <pre>
-     * [ ...                            ]           [ ...                                     ]
+     * - External coordinate system: -mActiveTranscriptRows to mScreenRows-1, with the screen being 0..mScreenRows-1.
-     * [ -mActiveTranscriptRows         ]           [ mScreenFirstRow - mActiveTranscriptRows ]
+     * - Internal coordinate system: the mScreenRows lines starting at mScreenFirstRow comprise the screen, while the
-     * [ ...                            ]           [ ...                                     ]
+     *   mActiveTranscriptRows lines ending at mScreenFirstRow-1 form the transcript (as a circular buffer).
-     * [ 0 (visible screen starts here) ]  <----->  [ mScreenFirstRow                         ]
+     *
-     * [ ...                            ]           [ ...                                     ]
+     * External ↔ Internal:
-     * [ mScreenRows-1                  ]           [ mScreenFirstRow + mScreenRows-1         ]
+     *
+     * [ ...                            ]     [ ...                                     ]
+     * [ -mActiveTranscriptRows         ]     [ mScreenFirstRow - mActiveTranscriptRows ]
+     * [ ...                            ]     [ ...                                     ]
+     * [ 0 (visible screen starts here) ]  ↔  [ mScreenFirstRow                         ]
+     * [ ...                            ]     [ ...                                     ]
+     * [ mScreenRows-1                  ]     [ mScreenFirstRow + mScreenRows-1         ]
      * </pre>
      *
      * @param externalRow a row in the external coordinate system.

terminal-emulator/src/main/java/com/termux/terminal/TerminalEmulator.java

@@ -56,8 +56,6 @@ public final class TerminalEmulator {
     private static final int ESC_SELECT_LEFT_PAREN = 3;
     /** Escape processing: Have seen ESC and a character-set-select ) char */
     private static final int ESC_SELECT_RIGHT_PAREN = 4;
-    /** Escape processing: Have seen ESC and a character-set-select + char */
-    // private static final int ESC_SELECT_PLUS = 5;
     /** Escape processing: "ESC [" or CSI (Control Sequence Introducer). */
     private static final int ESC_CSI = 6;
     /** Escape processing: ESC [ ? */
@@ -225,6 +223,7 @@ public final class TerminalEmulator {
 
     private byte mUtf8ToFollow, mUtf8Index;
     private final byte[] mUtf8InputBuffer = new byte[4];
+    private int mLastEmittedCodePoint = -1;
 
     public final TerminalColors mColors = new TerminalColors();
 
@@ -302,6 +301,11 @@ public final class TerminalEmulator {
      * @param mouseButton one of the MOUSE_* constants of this class.
      */
     public void sendMouseEvent(int mouseButton, int column, int row, boolean pressed) {
+        if (column < 1) column = 1;
+        if (column > mColumns) column = mColumns;
+        if (row < 1) row = 1;
+        if (row > mRows) row = mRows;
+
         if (mouseButton == MOUSE_LEFT_BUTTON_MOVED && !isDecsetInternalBitSet(DECSET_BIT_MOUSE_TRACKING_BUTTON_EVENT)) {
             // Do not send tracking.
         } else if (isDecsetInternalBitSet(DECSET_BIT_MOUSE_PROTOCOL_SGR)) {
@@ -309,7 +313,7 @@ public final class TerminalEmulator {
         } else {
             mouseButton = pressed ? mouseButton : 3; // 3 for release of all buttons.
             // Clip to screen, and clip to the limits of 8-bit data.
-            boolean out_of_bounds = column < 1 || row < 1 || column > mColumns || row > mRows || column > 255 - 32 || row > 255 - 32;
+            boolean out_of_bounds = column > 255 - 32 || row > 255 - 32;
             if (!out_of_bounds) {
                 byte[] data = {'\033', '[', 'M', (byte) (32 + mouseButton), (byte) (32 + column), (byte) (32 + row)};
                 mSession.write(data, 0, data.length);
@@ -421,10 +425,11 @@ public final class TerminalEmulator {
                     mUtf8Index = mUtf8ToFollow = 0;
 
                     if (codePoint >= 0x80 && codePoint <= 0x9F) {
-                        // Sequence decoded to a C1 control character which is the same as escape followed by
+                        // Sequence decoded to a C1 control character which we ignore. They are
-                        // ((code & 0x7F) + 0x40).
+                        // not used nowadays and increases the risk of messing up the terminal state
-                        processCodePoint(/* escape (hexadecimal=0x1B, octal=033): */27);
+                        // on binary input. XTerm does not allow them in utf-8:
-                        processCodePoint((codePoint & 0x7F) + 0x40);
+                        // "It is not possible to use a C1 control obtained from decoding the
+                        // UTF-8 text" - http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
                     } else {
                         switch (Character.getType(codePoint)) {
                             case Character.UNASSIGNED:
@@ -634,6 +639,7 @@ public final class TerminalEmulator {
                                 int bottom = Math.min(getArg(2, mRows, true) + 1, effectiveBottomMargin - 1) + effectiveTopMargin;
                                 int right = Math.min(getArg(3, mColumns, true) + 1, effectiveRightMargin - 1) + effectiveLeftMargin;
                                 if (mArgIndex >= 4) {
+                                    if (mArgIndex >= mArgs.length) mArgIndex = mArgs.length - 1;
                                     for (int i = 4; i <= mArgIndex; i++) {
                                         int bits = 0;
                                         boolean setOrClear = true; // True if setting, false if clearing.
@@ -967,6 +973,7 @@ public final class TerminalEmulator {
                 break;
             case 'h':
             case 'l':
+                if (mArgIndex >= mArgs.length) mArgIndex = mArgs.length - 1;
                 for (int i = 0; i <= mArgIndex; i++)
                     doDecSetOrReset(b == 'h', mArgs[i]);
                 break;
@@ -983,6 +990,7 @@ public final class TerminalEmulator {
                 break;
             case 'r':
             case 's':
+                if (mArgIndex >= mArgs.length) mArgIndex = mArgs.length - 1;
                 for (int i = 0; i <= mArgIndex; i++) {
                     int externalBit = mArgs[i];
                     int internalBit = mapDecSetBitToInternalBit(externalBit);
@@ -1189,12 +1197,20 @@ public final class TerminalEmulator {
     }
 
     private void doLinefeed() {
+        boolean belowScrollingRegion = mCursorRow >= mBottomMargin;
         int newCursorRow = mCursorRow + 1;
-        if (newCursorRow >= mBottomMargin) {
+        if (belowScrollingRegion) {
-            scrollDownOneLine();
+            // Move down (but not scroll) as long as we are above the last row.
-            newCursorRow = mBottomMargin - 1;
+            if (mCursorRow != mRows - 1) {
+                setCursorRow(newCursorRow);
+            }
+        } else {
+            if (newCursorRow == mBottomMargin) {
+                scrollDownOneLine();
+                newCursorRow = mBottomMargin - 1;
+            }
+            setCursorRow(newCursorRow);
         }
-        setCursorRow(newCursorRow);
     }
 
     private void continueSequence(int state) {
@@ -1309,6 +1325,8 @@ public final class TerminalEmulator {
         state.mSavedCursorRow = mCursorRow;
         state.mSavedCursorCol = mCursorCol;
         state.mSavedEffect = mEffect;
+        state.mSavedForeColor = mForeColor;
+        state.mSavedBackColor = mBackColor;
         state.mSavedDecFlags = mCurrentDecSetFlags;
         state.mUseLineDrawingG0 = mUseLineDrawingG0;
         state.mUseLineDrawingG1 = mUseLineDrawingG1;
@@ -1320,6 +1338,8 @@ public final class TerminalEmulator {
         SavedScreenState state = (mScreen == mMainBuffer) ? mSavedStateMain : mSavedStateAlt;
         setCursorRowCol(state.mSavedCursorRow, state.mSavedCursorCol);
         mEffect = state.mSavedEffect;
+        mForeColor = state.mSavedForeColor;
+        mBackColor = state.mSavedBackColor;
         int mask = (DECSET_BIT_AUTOWRAP | DECSET_BIT_ORIGIN_MODE);
         mCurrentDecSetFlags = (mCurrentDecSetFlags & ~mask) | (state.mSavedDecFlags & mask);
         mUseLineDrawingG0 = state.mUseLineDrawingG0;
@@ -1503,6 +1523,11 @@ public final class TerminalEmulator {
             case '`': // Horizontal position absolute (HPA - http://www.vt100.net/docs/vt510-rm/HPA).
                 setCursorColRespectingOriginMode(getArg0(1) - 1);
                 break;
+            case 'b': // Repeat the preceding graphic character Ps times (REP).
+                if (mLastEmittedCodePoint == -1) break;
+                final int numRepeat = getArg0(1);
+                for (int i = 0; i < numRepeat; i++) emitCodePoint(mLastEmittedCodePoint);
+                break;
             case 'c': // Primary Device Attributes (http://www.vt100.net/docs/vt510-rm/DA1) if argument is missing or zero.
                 // The important part that may still be used by some (tmux stores this value but does not currently use it)
                 // is the first response parameter identifying the terminal service class, where we send 64 for "vt420".
@@ -1559,7 +1584,7 @@ public final class TerminalEmulator {
                 break;
             case 'r': // "CSI${top};${bottom}r" - set top and bottom Margins (DECSTBM).
             {
-                // http://www.vt100.net/docs/vt510-rm/DECSTBM
+                // https://vt100.net/docs/vt510-rm/DECSTBM.html
                 // The top margin defaults to 1, the bottom margin defaults to mRows.
                 // The escape sequence numbers top 1..23, but we number top 0..22.
                 // The escape sequence numbers bottom 2..24, and so do we (because we use a zero based numbering
@@ -1568,6 +1593,7 @@ public final class TerminalEmulator {
                 // Also require that top + 2 <= bottom.
                 mTopMargin = Math.max(0, Math.min(getArg0(1) - 1, mRows - 2));
                 mBottomMargin = Math.max(mTopMargin + 2, Math.min(getArg1(mRows), mRows));
+
                 // DECSTBM moves the cursor to column 1, line 1 of the page respecting origin mode.
                 setCursorPosition(0, 0);
             }
@@ -1641,6 +1667,7 @@ public final class TerminalEmulator {
 
     /** Select Graphic Rendition (SGR) - see http://en.wikipedia.org/wiki/ANSI_escape_code#graphics. */
     private void selectGraphicRendition() {
+        if (mArgIndex >= mArgs.length) mArgIndex = mArgs.length - 1;
         for (int i = 0; i <= mArgIndex; i++) {
             int code = mArgs[i];
             if (code < 0) {
@@ -2051,6 +2078,7 @@ public final class TerminalEmulator {
             buf.append(", escapeState=");
             buf.append(mEscapeState);
             boolean firstArg = true;
+            if (mArgIndex >= mArgs.length) mArgIndex = mArgs.length - 1;
             for (int i = 0; i <= mArgIndex; i++) {
                 int value = mArgs[i];
                 if (value >= 0) {
@@ -2083,6 +2111,7 @@ public final class TerminalEmulator {
      * @param codePoint The code point of the character to display
      */
     private void emitCodePoint(int codePoint) {
+        mLastEmittedCodePoint = codePoint;
         if (mUseLineDrawingUsesG0 ? mUseLineDrawingG0 : mUseLineDrawingG1) {
             // http://www.vt100.net/docs/vt102-ug/table5-15.html.
             switch (codePoint) {
@@ -2265,8 +2294,8 @@ public final class TerminalEmulator {
         mBottomMargin = mRows;
         mRightMargin = mColumns;
         mAboutToAutoWrap = false;
-        mForeColor = TextStyle.COLOR_INDEX_FOREGROUND;
+        mForeColor = mSavedStateMain.mSavedForeColor = mSavedStateAlt.mSavedForeColor = TextStyle.COLOR_INDEX_FOREGROUND;
-        mBackColor = TextStyle.COLOR_INDEX_BACKGROUND;
+        mBackColor = mSavedStateMain.mSavedBackColor = mSavedStateAlt.mSavedBackColor = TextStyle.COLOR_INDEX_BACKGROUND;
         setDefaultTabStops();
 
         mUseLineDrawingG0 = mUseLineDrawingG1 = false;
@@ -2309,6 +2338,9 @@ public final class TerminalEmulator {
     public void paste(String text) {
         // First: Always remove escape key and C1 control characters [0x80,0x9F]:
         text = text.replaceAll("(\u001B|[\u0080-\u009F])", "");
+        // Second: Replace all newlines (\n) or CRLF (\r\n) with carriage returns (\r).
+        text = text.replaceAll("\r?\n", "\r");
+
         // Then: Implement bracketed paste mode if enabled:
         boolean bracketed = isDecsetInternalBitSet(DECSET_BIT_BRACKETED_PASTE_MODE);
         if (bracketed) mSession.write("\033[200~");
@@ -2320,7 +2352,7 @@ public final class TerminalEmulator {
     static final class SavedScreenState {
         /** Saved state of the cursor position, Used to implement the save/restore cursor position escape sequences. */
         int mSavedCursorRow, mSavedCursorCol;
-        int mSavedEffect;
+        int mSavedEffect, mSavedForeColor, mSavedBackColor;
         int mSavedDecFlags;
         boolean mUseLineDrawingG0, mUseLineDrawingG1, mUseLineDrawingUsesG0 = true;
     }

terminal-emulator/src/main/java/com/termux/terminal/TerminalRow.java

@@ -4,7 +4,7 @@ import java.util.Arrays;
 
 /**
  * A row in a terminal, composed of a fixed number of cells.
- * <p/>
+ * <p>
  * The text in the row is stored in a char[] array, {@link #mText}, for quick access during rendering.
  */
 public final class TerminalRow {
@@ -21,6 +21,8 @@ public final class TerminalRow {
     boolean mLineWrap;
     /** The style bits of each cell in the row. See {@link TextStyle}. */
     final long[] mStyle;
+    /** If this row might contain chars with width != 1, used for deactivating fast path */
+    boolean mHasNonOneWidthOrSurrogateChars;
 
     /** Construct a blank row (containing only whitespace, ' ') with a specified style. */
     public TerminalRow(int columns, long style) {
@@ -32,6 +34,7 @@ public final class TerminalRow {
 
     /** NOTE: The sourceX2 is exclusive. */
     public void copyInterval(TerminalRow line, int sourceX1, int sourceX2, int destinationX) {
+        mHasNonOneWidthOrSurrogateChars |= line.mHasNonOneWidthOrSurrogateChars;
         final int x1 = line.findStartOfColumn(sourceX1);
         final int x2 = line.findStartOfColumn(sourceX2);
         boolean startingFromSecondHalfOfWideChar = (sourceX1 > 0 && line.wideDisplayCharacterStartingAt(sourceX1 - 1));
@@ -116,6 +119,7 @@ public final class TerminalRow {
         Arrays.fill(mText, ' ');
         Arrays.fill(mStyle, style);
         mSpaceUsed = (short) mColumns;
+        mHasNonOneWidthOrSurrogateChars = false;
     }
 
     // https://github.com/steven676/Android-Terminal-Emulator/commit/9a47042620bec87617f0b4f5d50568535668fe26
@@ -123,6 +127,17 @@ public final class TerminalRow {
         mStyle[columnToSet] = style;
 
         final int newCodePointDisplayWidth = WcWidth.width(codePoint);
+
+        // Fast path when we don't have any chars with width != 1
+        if (!mHasNonOneWidthOrSurrogateChars) {
+            if (codePoint >= Character.MIN_SUPPLEMENTARY_CODE_POINT || newCodePointDisplayWidth != 1) {
+                mHasNonOneWidthOrSurrogateChars = true;
+            } else {
+                mText[columnToSet] = (char) codePoint;
+                return;
+            }
+        }
+
         final boolean newIsCombining = newCodePointDisplayWidth <= 0;
 
         boolean wasExtraColForWideChar = (columnToSet > 0) && wideDisplayCharacterStartingAt(columnToSet - 1);

terminal-emulator/src/main/java/com/termux/terminal/TerminalSession.java

@@ -19,13 +19,13 @@ import java.util.UUID;
 
 /**
  * A terminal session, consisting of a process coupled to a terminal interface.
- * <p/>
+ * <p>
  * The subprocess will be executed by the constructor, and when the size is made known by a call to
  * {@link #updateSize(int, int)} terminal emulation will begin and threads will be spawned to handle the subprocess I/O.
  * All terminal emulation and callback methods will be performed on the main thread.
- * <p/>
+ * <p>
  * The child process may be exited forcefully by using the {@link #finishIfRunning()} method.
- * <p/>
+ * <p>
  * NOTE: The terminal session may outlive the EmulatorView, so be careful with callbacks!
  */
 public final class TerminalSession extends TerminalOutput {

terminal-emulator/src/main/java/com/termux/terminal/TextStyle.java

@@ -1,10 +1,13 @@
 package com.termux.terminal;
 
 /**
+ * <p>
  * Encodes effects, foreground and background colors into a 64 bit long, which are stored for each cell in a terminal
  * row in {@link TerminalRow#mStyle}.
- * <p/>
+ * </p>
+ * <p>
  * The bit layout is:
+ * </p>
  * - 16 flags (11 currently used).
  * - 24 for foreground color (only 9 first bits if a color index).
  * - 24 for background color (only 9 first bits if a color index).
@@ -20,9 +23,10 @@ public final class TextStyle {
     public final static int CHARACTER_ATTRIBUTE_STRIKETHROUGH = 1 << 6;
     /**
      * The selective erase control functions (DECSED and DECSEL) can only erase characters defined as erasable.
-     * <p/>
+     * <p>
      * This bit is set if DECSCA (Select Character Protection Attribute) has been used to define the characters that
      * come after it as erasable from the screen.
+     * </p>
      */
     public final static int CHARACTER_ATTRIBUTE_PROTECTED = 1 << 7;
     /** Dim colors. Also known as faint or half intensity. */

terminal-emulator/src/test/java/com/termux/terminal/ControlSequenceIntroducerTest.java

@@ -29,4 +29,21 @@ public class ControlSequenceIntroducerTest extends TerminalTestCase {
 		withTerminalSized(13, 2).enterString("abcdefghijkl\b\b\b\b\b\033[20X").assertLinesAre("abcdefg      ", "             ");
 	}
 
+	/** CSI Pm m  Set SGR parameter(s) from semicolon-separated list Pm. */
+	public void testCsiSGRParameters() {
+		// Set more parameters (19) than supported (16).  Additional parameters should be silently consumed.
+		withTerminalSized(3, 2).enterString("\033[0;38;2;255;255;255;48;2;0;0;0;1;2;3;4;5;7;8;9mabc").assertLinesAre("abc", "   ");
+	}
+
+    /** CSI Ps b  Repeat the preceding graphic character Ps times (REP). */
+    public void testRepeat() {
+        withTerminalSized(3, 2).enterString("a\033[b").assertLinesAre("aa ", "   ");
+        withTerminalSized(3, 2).enterString("a\033[2b").assertLinesAre("aaa", "   ");
+        // When no char has been output we ignore REP:
+        withTerminalSized(3, 2).enterString("\033[b").assertLinesAre("   ", "   ");
+        // This shows that REP outputs the last emitted code point and not the one relative to the
+        // current cursor position:
+        withTerminalSized(5, 2).enterString("abcde\033[2G\033[2b\n").assertLinesAre("aeede", "     ");
+    }
+
 }

terminal-emulator/src/test/java/com/termux/terminal/CursorAndScreenTest.java

@@ -227,4 +227,44 @@ public class CursorAndScreenTest extends TerminalTestCase {
         withTerminalSized(3, 3).enterString("\b\b\b\bhi").assertLinesAre("hi ", "   ", "   ");
     }
 
+	public void testCursorSaveRestoreLocation() {
+		// DEC save/restore
+		withTerminalSized(4, 2).enterString("t\0337est\r\nme\0338ry ").assertLinesAre("try ", "me  ");
+		// ANSI.SYS save/restore
+		withTerminalSized(4, 2).enterString("t\033[sest\r\nme\033[ury ").assertLinesAre("try ", "me  ");
+		// Alternate screen enter/exit
+		withTerminalSized(4, 2).enterString("t\033[?1049h\033[Hest\r\nme").assertLinesAre("est ", "me  ").enterString("\033[?1049lry").assertLinesAre("try ", "    ");
+	}
+
+	public void testCursorSaveRestoreTextStyle() {
+		long s;
+
+		// DEC save/restore
+		withTerminalSized(4, 2).enterString("\033[31;42;4m..\0337\033[36;47;24m\0338..");
+		s = getStyleAt(0, 3);
+		Assert.assertEquals(1, TextStyle.decodeForeColor(s));
+		Assert.assertEquals(2, TextStyle.decodeBackColor(s));
+		Assert.assertEquals(TextStyle.CHARACTER_ATTRIBUTE_UNDERLINE, TextStyle.decodeEffect(s));
+
+		// ANSI.SYS save/restore
+		withTerminalSized(4, 2).enterString("\033[31;42;4m..\033[s\033[36;47;24m\033[u..");
+		s = getStyleAt(0, 3);
+		Assert.assertEquals(1, TextStyle.decodeForeColor(s));
+		Assert.assertEquals(2, TextStyle.decodeBackColor(s));
+		Assert.assertEquals(TextStyle.CHARACTER_ATTRIBUTE_UNDERLINE, TextStyle.decodeEffect(s));
+
+		// Alternate screen enter/exit
+		withTerminalSized(4, 2);
+		enterString("\033[31;42;4m..\033[?1049h\033[H\033[36;47;24m.");
+		s = getStyleAt(0, 0);
+		Assert.assertEquals(6, TextStyle.decodeForeColor(s));
+		Assert.assertEquals(7, TextStyle.decodeBackColor(s));
+		Assert.assertEquals(0, TextStyle.decodeEffect(s));
+		enterString("\033[?1049l..");
+		s = getStyleAt(0, 3);
+		Assert.assertEquals(1, TextStyle.decodeForeColor(s));
+		Assert.assertEquals(2, TextStyle.decodeBackColor(s));
+		Assert.assertEquals(TextStyle.CHARACTER_ATTRIBUTE_UNDERLINE, TextStyle.decodeEffect(s));
+	}
+
 }

terminal-emulator/src/test/java/com/termux/terminal/ScrollRegionTest.java

@@ -98,4 +98,13 @@ public class ScrollRegionTest extends TerminalTestCase {
 		withTerminalSized(2, 5).enterString("1\r\n2\r\n3\r\n4\r\n5").assertLinesAre("1 ", "2 ", "3 ", "4 ", "5 ");
 		enterString("\033[3r").enterString("\033[2T").assertLinesAre("1 ", "2 ", "  ", "  ", "3 ");
 	}
+
+	public void testScrollDownBelowScrollRegion() {
+		withTerminalSized(2, 5).enterString("1\r\n2\r\n3\r\n4\r\n5").assertLinesAre("1 ", "2 ", "3 ", "4 ", "5 ");
+		enterString("\033[1;3r"); // DECSTBM margins.
+		enterString("\033[4;1H"); // Place cursor just below bottom margin.
+		enterString("QQ\r\nRR\r\n\r\n\r\nYY");
+		assertLinesAre("1 ", "2 ", "3 ", "QQ", "YY");
+	}
+
 }

terminal-emulator/src/test/java/com/termux/terminal/TerminalRowTest.java

@@ -27,6 +27,7 @@ public class TerminalRowTest extends TestCase {
 
 	@Override
 	protected void setUp() throws Exception {
+		super.setUp();
 		row = new TerminalRow(COLUMNS, TextStyle.NORMAL);
 	}
 

terminal-emulator/src/test/java/com/termux/terminal/TerminalTest.java

@@ -55,6 +55,14 @@ public class TerminalTest extends TerminalTestCase {
 		assertEquals("\033[<0;3;4M", mOutput.getOutputAndClear());
 		mTerminal.sendMouseEvent(TerminalEmulator.MOUSE_LEFT_BUTTON, 3, 4, false);
 		assertEquals("\033[<0;3;4m", mOutput.getOutputAndClear());
+
+		// When the client says that a click is outside (which could happen when pixels are outside
+		// the terminal area, see https://github.com/termux/termux-app/issues/501) the terminal
+		// sends a click at the edge.
+		mTerminal.sendMouseEvent(TerminalEmulator.MOUSE_LEFT_BUTTON, 0, 0, true);
+		assertEquals("\033[<0;1;1M", mOutput.getOutputAndClear());
+		mTerminal.sendMouseEvent(TerminalEmulator.MOUSE_LEFT_BUTTON, 11, 11, false);
+		assertEquals("\033[<0;10;10m", mOutput.getOutputAndClear());
 	}
 
 	public void testNormalization() throws UnsupportedEncodingException {

terminal-emulator/src/test/java/com/termux/terminal/TerminalTestCase.java

@@ -103,6 +103,7 @@ public abstract class TerminalTestCase extends TestCase {
 
 	@Override
 	protected void setUp() throws Exception {
+		super.setUp();
 		mOutput = new MockTerminalOutput();
 	}
 

terminal-view/build.gradle

@@ -0,0 +1,45 @@
+plugins {
+    id "com.jfrog.bintray" version "1.7.3"
+    id "com.github.dcendents.android-maven" version "2.0"
+}
+
+apply plugin: 'com.android.library'
+
+ext {
+    bintrayName = 'terminal-view'
+    publishedGroupId = 'com.termux'
+    libraryName = 'TerminalView'
+    artifact = 'terminal-view'
+    libraryDescription = 'The terminal view used in Termux'
+    siteUrl = 'https://github.com/termux/termux'
+    gitUrl = 'https://github.com/termux/termux.git'
+    libraryVersion = '0.50'
+}
+
+android {
+    compileSdkVersion 27
+
+    dependencies {
+        implementation 'com.android.support:support-annotations:27.1.1'
+        api project(":terminal-emulator")
+    }
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 27
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    testImplementation 'junit:junit:4.12'
+}
+
+apply from: '../scripts/bintray-publish.gradle'

terminal-view/proguard-rules.pro

@@ -0,0 +1,25 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/fornwall/lib/android-sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

terminal-view/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<manifest package="com.termux.view">
+</manifest>

terminal-view/src/main/java/com/termux/view/GestureAndScaleRecognizer.java

@@ -6,7 +6,7 @@ import android.view.MotionEvent;
 import android.view.ScaleGestureDetector;
 
 /** A combination of {@link GestureDetector} and {@link ScaleGestureDetector}. */
-public final class GestureAndScaleRecognizer {
+final class GestureAndScaleRecognizer {
 
     public interface Listener {
         boolean onSingleTapUp(MotionEvent e);
@@ -85,6 +85,7 @@ public final class GestureAndScaleRecognizer {
                 return mListener.onScale(detector.getFocusX(), detector.getFocusY(), detector.getScaleFactor());
             }
         });
+        mScaleDetector.setQuickScaleEnabled(false);
     }
 
     public void onTouchEvent(MotionEvent event) {

terminal-view/src/main/java/com/termux/view/TerminalRenderer.java

@@ -16,7 +16,7 @@ import com.termux.terminal.WcWidth;
  * <p/>
  * Saves font metrics, so needs to be recreated each time the typeface or font size changes.
  */
-final class TerminalRenderer {
+public final class TerminalRenderer {
 
     final int mTextSize;
     final Typeface mTypeface;

terminal-view/src/main/java/com/termux/view/TerminalView.java

@@ -29,7 +29,6 @@ import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputConnection;
 import android.widget.Scroller;
 
-import com.termux.R;
 import com.termux.terminal.EmulatorDebug;
 import com.termux.terminal.KeyHandler;
 import com.termux.terminal.TerminalBuffer;
@@ -49,7 +48,7 @@ public final class TerminalView extends View {
 
     TerminalRenderer mRenderer;
 
-    TerminalKeyListener mOnKeyListener;
+    TerminalViewClient mClient;
 
     /** The top row of text to display. Ranges from -activeTranscriptRows to 0. */
     int mTopRow;
@@ -106,7 +105,7 @@ public final class TerminalView extends View {
                 requestFocus();
                 if (!mEmulator.isMouseTrackingActive()) {
                     if (!e.isFromSource(InputDevice.SOURCE_MOUSE)) {
-                        mOnKeyListener.onSingleTapUp(e);
+                        mClient.onSingleTapUp(e);
                         return true;
                     }
                 }
@@ -136,7 +135,7 @@ public final class TerminalView extends View {
             public boolean onScale(float focusX, float focusY, float scale) {
                 if (mEmulator == null || mIsSelectingText) return true;
                 mScaleFactor *= scale;
-                mScaleFactor = mOnKeyListener.onScale(mScaleFactor);
+                mScaleFactor = mClient.onScale(mScaleFactor);
                 return true;
             }
 
@@ -189,7 +188,9 @@ public final class TerminalView extends View {
 
             @Override
             public void onLongPress(MotionEvent e) {
-                if (!mGestureRecognizer.isInProgress() && !mIsSelectingText) {
+                if (mGestureRecognizer.isInProgress()) return;
+                if (mClient.onLongPress(e)) return;
+                if (!mIsSelectingText) {
                     performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
                     toggleSelectingText(e);
                 }
@@ -202,8 +203,8 @@ public final class TerminalView extends View {
      * @param onKeyListener Listener for all kinds of key events, both hardware and IME (which makes it different from that
      *                      available with {@link View#setOnKeyListener(OnKeyListener)}.
      */
-    public void setOnKeyListener(TerminalKeyListener onKeyListener) {
+    public void setOnKeyListener(TerminalViewClient onKeyListener) {
-        this.mOnKeyListener = onKeyListener;
+        this.mClient = onKeyListener;
     }
 
     /**
@@ -555,7 +556,7 @@ public final class TerminalView extends View {
             if (mIsSelectingText) {
                 toggleSelectingText(null);
                 return true;
-            } else if (mOnKeyListener.shouldBackButtonBeMappedToEscape()) {
+            } else if (mClient.shouldBackButtonBeMappedToEscape()) {
                 // Intercept back button to treat it as escape:
                 switch (event.getAction()) {
                     case KeyEvent.ACTION_DOWN:
@@ -574,10 +575,10 @@ public final class TerminalView extends View {
             Log.i(EmulatorDebug.LOG_TAG, "onKeyDown(keyCode=" + keyCode + ", isSystem()=" + event.isSystem() + ", event=" + event + ")");
         if (mEmulator == null) return true;
 
-        if (mOnKeyListener.onKeyDown(keyCode, event, mTermSession)) {
+        if (mClient.onKeyDown(keyCode, event, mTermSession)) {
             invalidate();
             return true;
-        } else if (event.isSystem() && (!mOnKeyListener.shouldBackButtonBeMappedToEscape() || keyCode != KeyEvent.KEYCODE_BACK)) {
+        } else if (event.isSystem() && (!mClient.shouldBackButtonBeMappedToEscape() || keyCode != KeyEvent.KEYCODE_BACK)) {
             return super.onKeyDown(keyCode, event);
         } else if (event.getAction() == KeyEvent.ACTION_MULTIPLE && keyCode == KeyEvent.KEYCODE_UNKNOWN) {
             mTermSession.write(event.getCharacters());
@@ -641,10 +642,12 @@ public final class TerminalView extends View {
                 + leftAltDownFromEvent + ")");
         }
 
-        final boolean controlDown = controlDownFromEvent || mOnKeyListener.readControlKey();
+        if (mTermSession == null) return;
-        final boolean altDown = leftAltDownFromEvent || mOnKeyListener.readAltKey();
 
-        if (mOnKeyListener.onCodePoint(codePoint, controlDown, mTermSession)) return;
+        final boolean controlDown = controlDownFromEvent || mClient.readControlKey();
+        final boolean altDown = leftAltDownFromEvent || mClient.readAltKey();
+
+        if (mClient.onCodePoint(codePoint, controlDown, mTermSession)) return;
 
         if (controlDown) {
             if (codePoint >= 'a' && codePoint <= 'z') {
@@ -713,7 +716,7 @@ public final class TerminalView extends View {
             Log.i(EmulatorDebug.LOG_TAG, "onKeyUp(keyCode=" + keyCode + ", event=" + event + ")");
         if (mEmulator == null) return true;
 
-        if (mOnKeyListener.onKeyUp(keyCode, event)) {
+        if (mClient.onKeyUp(keyCode, event)) {
             invalidate();
             return true;
         } else if (event.isSystem()) {
@@ -781,7 +784,7 @@ public final class TerminalView extends View {
     @TargetApi(23)
     public void toggleSelectingText(MotionEvent ev) {
         mIsSelectingText = !mIsSelectingText;
-        mOnKeyListener.copyModeChanged(mIsSelectingText);
+        mClient.copyModeChanged(mIsSelectingText);
 
         if (mIsSelectingText) {
             if (mLeftSelectionHandle == null) {
@@ -833,6 +836,10 @@ public final class TerminalView extends View {
 
                 @Override
                 public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+                    if (!mIsSelectingText) {
+                        // Fix issue where the dialog is pressed while being dismissed.
+                        return true;
+                    }
                     switch (item.getItemId()) {
                         case 1:
                             String selectedText = mEmulator.getSelectedText(mSelX1, mSelY1, mSelX2, mSelY2).trim();

terminal-view/src/main/java/com/termux/view/TerminalViewClient.java

@@ -8,16 +8,19 @@ import com.termux.terminal.TerminalSession;
 
 /**
  * Input and scale listener which may be set on a {@link TerminalView} through
- * {@link TerminalView#setOnKeyListener(TerminalKeyListener)}.
+ * {@link TerminalView#setOnKeyListener(TerminalViewClient)}.
  * <p/>
- * TODO: Rename to TerminalViewClient.
  */
-public interface TerminalKeyListener {
+public interface TerminalViewClient {
 
-    /** Callback function on scale events according to {@link ScaleGestureDetector#getScaleFactor()}. */
+    /**
+     * Callback function on scale events according to {@link ScaleGestureDetector#getScaleFactor()}.
+     */
     float onScale(float scale);
 
-    /** On a single tap on the terminal if terminal mouse reporting not enabled. */
+    /**
+     * On a single tap on the terminal if terminal mouse reporting not enabled.
+     */
     void onSingleTapUp(MotionEvent e);
 
     boolean shouldBackButtonBeMappedToEscape();
@@ -34,4 +37,6 @@ public interface TerminalKeyListener {
 
     boolean onCodePoint(int codePoint, boolean ctrlDown, TerminalSession session);
 
+    boolean onLongPress(MotionEvent event);
+
 }

terminal-view/src/main/res/values/strings.xml

@@ -0,0 +1,5 @@
+<resources>
+  <string name="paste_text">Paste</string>
+  <string name="copy_text">Copy</string>
+  <string name="text_selection_more">More…</string>
+</resources>