shell/console/src/main/java/org/apache/karaf/shell/compat/OldArgumentCompleter.java [372:453]:
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    public boolean isDelimiter(final String buffer, final int pos) {
        return !isEscaped(buffer, pos) && isDelimiterChar(buffer, pos);
    }

    public boolean isEscaped(final String buffer, final int pos) {
        return pos > 0 && buffer.charAt(pos) == '\\' && !isEscaped(buffer, pos - 1);
    }

    /**
     * The character is a delimiter if it is whitespace, and the
     * preceding character is not an escape character.
     *
     * @param buffer The complete command buffer.
     * @param pos The index of the character in the buffer.
     * @return True if the character is delimiter, false else.
     */
    public boolean isDelimiterChar(String buffer, int pos) {
        return Character.isWhitespace(buffer.charAt(pos));
    }

    /**
     * The result of a delimited buffer.
     */
    public static class ArgumentList {
        private String[] arguments;
        private int cursorArgumentIndex;
        private int argumentPosition;
        private int bufferPosition;

        /**
         * @param arguments The array of tokens.
         * @param cursorArgumentIndex The token index of the cursor.
         * @param argumentPosition The position of the cursor in the current token.
         * @param bufferPosition The position of the cursor in the whole buffer.
         */
        public ArgumentList(String[] arguments, int cursorArgumentIndex,
            int argumentPosition, int bufferPosition) {
            this.arguments = arguments;
            this.cursorArgumentIndex = cursorArgumentIndex;
            this.argumentPosition = argumentPosition;
            this.bufferPosition = bufferPosition;
        }

        public void setCursorArgumentIndex(int cursorArgumentIndex) {
            this.cursorArgumentIndex = cursorArgumentIndex;
        }

        public int getCursorArgumentIndex() {
            return this.cursorArgumentIndex;
        }

        public String getCursorArgument() {
            if ((cursorArgumentIndex < 0)
                || (cursorArgumentIndex >= arguments.length)) {
                return null;
            }

            return arguments[cursorArgumentIndex];
        }

        public void setArgumentPosition(int argumentPosition) {
            this.argumentPosition = argumentPosition;
        }

        public int getArgumentPosition() {
            return this.argumentPosition;
        }

        public void setArguments(String[] arguments) {
            this.arguments = arguments;
        }

        public String[] getArguments() {
            return this.arguments;
        }

        public void setBufferPosition(int bufferPosition) {
            this.bufferPosition = bufferPosition;
        }

        public int getBufferPosition() {
            return this.bufferPosition;
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shell/console/src/main/java/org/apache/karaf/shell/console/completer/ArgumentCompleter.java [464:545]:
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    public boolean isDelimiter(final String buffer, final int pos) {
        return !isEscaped(buffer, pos) && isDelimiterChar(buffer, pos);
    }

    public boolean isEscaped(final String buffer, final int pos) {
        return pos > 0 && buffer.charAt(pos) == '\\' && !isEscaped(buffer, pos - 1);
    }

    /**
     * The character is a delimiter if it is whitespace, and the
     * preceding character is not an escape character.
     *
     * @param buffer The complete command buffer.
     * @param pos The index of the character in the buffer.
     * @return True if the character is a delimiter, false else.
     */
    public boolean isDelimiterChar(String buffer, int pos) {
        return Character.isWhitespace(buffer.charAt(pos));
    }

    /**
     * The result of a delimited buffer.
     */
    public static class ArgumentList {
        private String[] arguments;
        private int cursorArgumentIndex;
        private int argumentPosition;
        private int bufferPosition;

        /**
         * @param arguments The array of tokens.
         * @param cursorArgumentIndex The token index of the cursor.
         * @param argumentPosition The position of the cursor in the current token.
         * @param bufferPosition The position of the cursor in the whole buffer.
         */
        public ArgumentList(String[] arguments, int cursorArgumentIndex,
            int argumentPosition, int bufferPosition) {
            this.arguments = arguments;
            this.cursorArgumentIndex = cursorArgumentIndex;
            this.argumentPosition = argumentPosition;
            this.bufferPosition = bufferPosition;
        }

        public void setCursorArgumentIndex(int cursorArgumentIndex) {
            this.cursorArgumentIndex = cursorArgumentIndex;
        }

        public int getCursorArgumentIndex() {
            return this.cursorArgumentIndex;
        }

        public String getCursorArgument() {
            if ((cursorArgumentIndex < 0)
                || (cursorArgumentIndex >= arguments.length)) {
                return null;
            }

            return arguments[cursorArgumentIndex];
        }

        public void setArgumentPosition(int argumentPosition) {
            this.argumentPosition = argumentPosition;
        }

        public int getArgumentPosition() {
            return this.argumentPosition;
        }

        public void setArguments(String[] arguments) {
            this.arguments = arguments;
        }

        public String[] getArguments() {
            return this.arguments;
        }

        public void setBufferPosition(int bufferPosition) {
            this.bufferPosition = bufferPosition;
        }

        public int getBufferPosition() {
            return this.bufferPosition;
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