rhino-tools/src/main/java/org/mozilla/javascript/tools/debugger/SwingGui.java [1053:1133]:
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    @Override
    public void keyPressed(KeyEvent e) {
        int code = e.getKeyCode();
        if (code == KeyEvent.VK_BACK_SPACE || code == KeyEvent.VK_LEFT) {
            if (outputMark == getCaretPosition()) {
                e.consume();
            }
        } else if (code == KeyEvent.VK_HOME) {
            int caretPos = getCaretPosition();
            if (caretPos == outputMark) {
                e.consume();
            } else if (caretPos > outputMark) {
                if (!e.isControlDown()) {
                    if (e.isShiftDown()) {
                        moveCaretPosition(outputMark);
                    } else {
                        setCaretPosition(outputMark);
                    }
                    e.consume();
                }
            }
        } else if (code == KeyEvent.VK_ENTER) {
            returnPressed();
            e.consume();
        } else if (code == KeyEvent.VK_UP) {
            historyIndex--;
            if (historyIndex >= 0) {
                if (historyIndex >= history.size()) {
                    historyIndex = history.size() - 1;
                }
                if (historyIndex >= 0) {
                    String str = history.get(historyIndex);
                    int len = getDocument().getLength();
                    replaceRange(str, outputMark, len);
                    int caretPos = outputMark + str.length();
                    select(caretPos, caretPos);
                } else {
                    historyIndex++;
                }
            } else {
                historyIndex++;
            }
            e.consume();
        } else if (code == KeyEvent.VK_DOWN) {
            int caretPos = outputMark;
            if (history.size() > 0) {
                historyIndex++;
                if (historyIndex < 0) {
                    historyIndex = 0;
                }
                int len = getDocument().getLength();
                if (historyIndex < history.size()) {
                    String str = history.get(historyIndex);
                    replaceRange(str, outputMark, len);
                    caretPos = outputMark + str.length();
                } else {
                    historyIndex = history.size();
                    replaceRange("", outputMark, len);
                }
            }
            select(caretPos, caretPos);
            e.consume();
        }
    }

    /** Called when a key is typed. */
    @Override
    public void keyTyped(KeyEvent e) {
        int keyChar = e.getKeyChar();
        if (keyChar == 0x8 /* KeyEvent.VK_BACK_SPACE */) {
            if (outputMark == getCaretPosition()) {
                e.consume();
            }
        } else if (getCaretPosition() < outputMark) {
            setCaretPosition(outputMark);
        }
    }

    /** Called when a key is released. */
    @Override
    public synchronized void keyReleased(KeyEvent e) {}
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rhino-tools/src/main/java/org/mozilla/javascript/tools/shell/ConsoleTextArea.java [156:234]:
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    @Override
    public void keyPressed(KeyEvent e) {
        int code = e.getKeyCode();
        if (code == KeyEvent.VK_BACK_SPACE || code == KeyEvent.VK_LEFT) {
            if (outputMark == getCaretPosition()) {
                e.consume();
            }
        } else if (code == KeyEvent.VK_HOME) {
            int caretPos = getCaretPosition();
            if (caretPos == outputMark) {
                e.consume();
            } else if (caretPos > outputMark) {
                if (!e.isControlDown()) {
                    if (e.isShiftDown()) {
                        moveCaretPosition(outputMark);
                    } else {
                        setCaretPosition(outputMark);
                    }
                    e.consume();
                }
            }
        } else if (code == KeyEvent.VK_ENTER) {
            returnPressed();
            e.consume();
        } else if (code == KeyEvent.VK_UP) {
            historyIndex--;
            if (historyIndex >= 0) {
                if (historyIndex >= history.size()) {
                    historyIndex = history.size() - 1;
                }
                if (historyIndex >= 0) {
                    String str = history.get(historyIndex);
                    int len = getDocument().getLength();
                    replaceRange(str, outputMark, len);
                    int caretPos = outputMark + str.length();
                    select(caretPos, caretPos);
                } else {
                    historyIndex++;
                }
            } else {
                historyIndex++;
            }
            e.consume();
        } else if (code == KeyEvent.VK_DOWN) {
            int caretPos = outputMark;
            if (history.size() > 0) {
                historyIndex++;
                if (historyIndex < 0) {
                    historyIndex = 0;
                }
                int len = getDocument().getLength();
                if (historyIndex < history.size()) {
                    String str = history.get(historyIndex);
                    replaceRange(str, outputMark, len);
                    caretPos = outputMark + str.length();
                } else {
                    historyIndex = history.size();
                    replaceRange("", outputMark, len);
                }
            }
            select(caretPos, caretPos);
            e.consume();
        }
    }

    @Override
    public void keyTyped(KeyEvent e) {
        int keyChar = e.getKeyChar();
        if (keyChar == 0x8 /* KeyEvent.VK_BACK_SPACE */) {
            if (outputMark == getCaretPosition()) {
                e.consume();
            }
        } else if (getCaretPosition() < outputMark) {
            setCaretPosition(outputMark);
        }
    }

    @Override
    public synchronized void keyReleased(KeyEvent e) {}
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