Uploaded Test files

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/auto_suggest.py

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+"""
+Key bindings for auto suggestion (for fish-style auto suggestion).
+"""
+import re
+
+from prompt_toolkit.application.current import get_app
+from prompt_toolkit.filters import Condition, emacs_mode
+from prompt_toolkit.key_binding.key_bindings import KeyBindings
+from prompt_toolkit.key_binding.key_processor import KeyPressEvent
+
+__all__ = [
+    "load_auto_suggest_bindings",
+]
+
+E = KeyPressEvent
+
+
+def load_auto_suggest_bindings() -> KeyBindings:
+    """
+    Key bindings for accepting auto suggestion text.
+
+    (This has to come after the Vi bindings, because they also have an
+    implementation for the "right arrow", but we really want the suggestion
+    binding when a suggestion is available.)
+    """
+    key_bindings = KeyBindings()
+    handle = key_bindings.add
+
+    @Condition
+    def suggestion_available() -> bool:
+        app = get_app()
+        return (
+            app.current_buffer.suggestion is not None
+            and len(app.current_buffer.suggestion.text) > 0
+            and app.current_buffer.document.is_cursor_at_the_end
+        )
+
+    @handle("c-f", filter=suggestion_available)
+    @handle("c-e", filter=suggestion_available)
+    @handle("right", filter=suggestion_available)
+    def _accept(event: E) -> None:
+        """
+        Accept suggestion.
+        """
+        b = event.current_buffer
+        suggestion = b.suggestion
+
+        if suggestion:
+            b.insert_text(suggestion.text)
+
+    @handle("escape", "f", filter=suggestion_available & emacs_mode)
+    def _fill(event: E) -> None:
+        """
+        Fill partial suggestion.
+        """
+        b = event.current_buffer
+        suggestion = b.suggestion
+
+        if suggestion:
+            t = re.split(r"(\S+\s+)", suggestion.text)
+            b.insert_text(next(x for x in t if x))
+
+    return key_bindings

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/basic.py

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+# pylint: disable=function-redefined
+from prompt_toolkit.application.current import get_app
+from prompt_toolkit.filters import (
+    Condition,
+    emacs_insert_mode,
+    has_selection,
+    in_paste_mode,
+    is_multiline,
+    vi_insert_mode,
+)
+from prompt_toolkit.key_binding.key_processor import KeyPress, KeyPressEvent
+from prompt_toolkit.keys import Keys
+
+from ..key_bindings import KeyBindings
+from .named_commands import get_by_name
+
+__all__ = [
+    "load_basic_bindings",
+]
+
+E = KeyPressEvent
+
+
+def if_no_repeat(event: E) -> bool:
+    """Callable that returns True when the previous event was delivered to
+    another handler."""
+    return not event.is_repeat
+
+
+def load_basic_bindings() -> KeyBindings:
+    key_bindings = KeyBindings()
+    insert_mode = vi_insert_mode | emacs_insert_mode
+    handle = key_bindings.add
+
+    @handle("c-a")
+    @handle("c-b")
+    @handle("c-c")
+    @handle("c-d")
+    @handle("c-e")
+    @handle("c-f")
+    @handle("c-g")
+    @handle("c-h")
+    @handle("c-i")
+    @handle("c-j")
+    @handle("c-k")
+    @handle("c-l")
+    @handle("c-m")
+    @handle("c-n")
+    @handle("c-o")
+    @handle("c-p")
+    @handle("c-q")
+    @handle("c-r")
+    @handle("c-s")
+    @handle("c-t")
+    @handle("c-u")
+    @handle("c-v")
+    @handle("c-w")
+    @handle("c-x")
+    @handle("c-y")
+    @handle("c-z")
+    @handle("f1")
+    @handle("f2")
+    @handle("f3")
+    @handle("f4")
+    @handle("f5")
+    @handle("f6")
+    @handle("f7")
+    @handle("f8")
+    @handle("f9")
+    @handle("f10")
+    @handle("f11")
+    @handle("f12")
+    @handle("f13")
+    @handle("f14")
+    @handle("f15")
+    @handle("f16")
+    @handle("f17")
+    @handle("f18")
+    @handle("f19")
+    @handle("f20")
+    @handle("f21")
+    @handle("f22")
+    @handle("f23")
+    @handle("f24")
+    @handle("c-@")  # Also c-space.
+    @handle("c-\\")
+    @handle("c-]")
+    @handle("c-^")
+    @handle("c-_")
+    @handle("backspace")
+    @handle("up")
+    @handle("down")
+    @handle("right")
+    @handle("left")
+    @handle("s-up")
+    @handle("s-down")
+    @handle("s-right")
+    @handle("s-left")
+    @handle("home")
+    @handle("end")
+    @handle("s-home")
+    @handle("s-end")
+    @handle("delete")
+    @handle("s-delete")
+    @handle("c-delete")
+    @handle("pageup")
+    @handle("pagedown")
+    @handle("s-tab")
+    @handle("tab")
+    @handle("c-s-left")
+    @handle("c-s-right")
+    @handle("c-s-home")
+    @handle("c-s-end")
+    @handle("c-left")
+    @handle("c-right")
+    @handle("c-up")
+    @handle("c-down")
+    @handle("c-home")
+    @handle("c-end")
+    @handle("insert")
+    @handle("s-insert")
+    @handle("c-insert")
+    @handle(Keys.Ignore)
+    def _ignore(event: E) -> None:
+        """
+        First, for any of these keys, Don't do anything by default. Also don't
+        catch them in the 'Any' handler which will insert them as data.
+
+        If people want to insert these characters as a literal, they can always
+        do by doing a quoted insert. (ControlQ in emacs mode, ControlV in Vi
+        mode.)
+        """
+        pass
+
+    # Readline-style bindings.
+    handle("home")(get_by_name("beginning-of-line"))
+    handle("end")(get_by_name("end-of-line"))
+    handle("left")(get_by_name("backward-char"))
+    handle("right")(get_by_name("forward-char"))
+    handle("c-up")(get_by_name("previous-history"))
+    handle("c-down")(get_by_name("next-history"))
+    handle("c-l")(get_by_name("clear-screen"))
+
+    handle("c-k", filter=insert_mode)(get_by_name("kill-line"))
+    handle("c-u", filter=insert_mode)(get_by_name("unix-line-discard"))
+    handle("backspace", filter=insert_mode, save_before=if_no_repeat)(
+        get_by_name("backward-delete-char")
+    )
+    handle("delete", filter=insert_mode, save_before=if_no_repeat)(
+        get_by_name("delete-char")
+    )
+    handle("c-delete", filter=insert_mode, save_before=if_no_repeat)(
+        get_by_name("delete-char")
+    )
+    handle(Keys.Any, filter=insert_mode, save_before=if_no_repeat)(
+        get_by_name("self-insert")
+    )
+    handle("c-t", filter=insert_mode)(get_by_name("transpose-chars"))
+    handle("c-i", filter=insert_mode)(get_by_name("menu-complete"))
+    handle("s-tab", filter=insert_mode)(get_by_name("menu-complete-backward"))
+
+    # Control-W should delete, using whitespace as separator, while M-Del
+    # should delete using [^a-zA-Z0-9] as a boundary.
+    handle("c-w", filter=insert_mode)(get_by_name("unix-word-rubout"))
+
+    handle("pageup", filter=~has_selection)(get_by_name("previous-history"))
+    handle("pagedown", filter=~has_selection)(get_by_name("next-history"))
+
+    # CTRL keys.
+
+    @Condition
+    def has_text_before_cursor() -> bool:
+        return bool(get_app().current_buffer.text)
+
+    handle("c-d", filter=has_text_before_cursor & insert_mode)(
+        get_by_name("delete-char")
+    )
+
+    @handle("enter", filter=insert_mode & is_multiline)
+    def _newline(event: E) -> None:
+        """
+        Newline (in case of multiline input.
+        """
+        event.current_buffer.newline(copy_margin=not in_paste_mode())
+
+    @handle("c-j")
+    def _newline2(event: E) -> None:
+        r"""
+        By default, handle \n as if it were a \r (enter).
+        (It appears that some terminals send \n instead of \r when pressing
+        enter. - at least the Linux subsystem for Windows.)
+        """
+        event.key_processor.feed(KeyPress(Keys.ControlM, "\r"), first=True)
+
+    # Delete the word before the cursor.
+
+    @handle("up")
+    def _go_up(event: E) -> None:
+        event.current_buffer.auto_up(count=event.arg)
+
+    @handle("down")
+    def _go_down(event: E) -> None:
+        event.current_buffer.auto_down(count=event.arg)
+
+    @handle("delete", filter=has_selection)
+    def _cut(event: E) -> None:
+        data = event.current_buffer.cut_selection()
+        event.app.clipboard.set_data(data)
+
+    # Global bindings.
+
+    @handle("c-z")
+    def _insert_ctrl_z(event: E) -> None:
+        """
+        By default, control-Z should literally insert Ctrl-Z.
+        (Ansi Ctrl-Z, code 26 in MSDOS means End-Of-File.
+        In a Python REPL for instance, it's possible to type
+        Control-Z followed by enter to quit.)
+
+        When the system bindings are loaded and suspend-to-background is
+        supported, that will override this binding.
+        """
+        event.current_buffer.insert_text(event.data)
+
+    @handle(Keys.BracketedPaste)
+    def _paste(event: E) -> None:
+        """
+        Pasting from clipboard.
+        """
+        data = event.data
+
+        # Be sure to use \n as line ending.
+        # Some terminals (Like iTerm2) seem to paste \r\n line endings in a
+        # bracketed paste. See: https://github.com/ipython/ipython/issues/9737
+        data = data.replace("\r\n", "\n")
+        data = data.replace("\r", "\n")
+
+        event.current_buffer.insert_text(data)
+
+    @Condition
+    def in_quoted_insert() -> bool:
+        return get_app().quoted_insert
+
+    @handle(Keys.Any, filter=in_quoted_insert, eager=True)
+    def _insert_text(event: E) -> None:
+        """
+        Handle quoted insert.
+        """
+        event.current_buffer.insert_text(event.data, overwrite=False)
+        event.app.quoted_insert = False
+
+    return key_bindings

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/completion.py

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+"""
+Key binding handlers for displaying completions.
+"""
+import asyncio
+import math
+from typing import TYPE_CHECKING, List
+
+from prompt_toolkit.application.run_in_terminal import in_terminal
+from prompt_toolkit.completion import (
+    CompleteEvent,
+    Completion,
+    get_common_complete_suffix,
+)
+from prompt_toolkit.formatted_text import StyleAndTextTuples
+from prompt_toolkit.key_binding.key_bindings import KeyBindings
+from prompt_toolkit.key_binding.key_processor import KeyPressEvent
+from prompt_toolkit.keys import Keys
+from prompt_toolkit.utils import get_cwidth
+
+if TYPE_CHECKING:
+    from prompt_toolkit.application import Application
+    from prompt_toolkit.shortcuts import PromptSession
+
+__all__ = [
+    "generate_completions",
+    "display_completions_like_readline",
+]
+
+E = KeyPressEvent
+
+
+def generate_completions(event: E) -> None:
+    r"""
+    Tab-completion: where the first tab completes the common suffix and the
+    second tab lists all the completions.
+    """
+    b = event.current_buffer
+
+    # When already navigating through completions, select the next one.
+    if b.complete_state:
+        b.complete_next()
+    else:
+        b.start_completion(insert_common_part=True)
+
+
+def display_completions_like_readline(event: E) -> None:
+    """
+    Key binding handler for readline-style tab completion.
+    This is meant to be as similar as possible to the way how readline displays
+    completions.
+
+    Generate the completions immediately (blocking) and display them above the
+    prompt in columns.
+
+    Usage::
+
+        # Call this handler when 'Tab' has been pressed.
+        key_bindings.add(Keys.ControlI)(display_completions_like_readline)
+    """
+    # Request completions.
+    b = event.current_buffer
+    if b.completer is None:
+        return
+    complete_event = CompleteEvent(completion_requested=True)
+    completions = list(b.completer.get_completions(b.document, complete_event))
+
+    # Calculate the common suffix.
+    common_suffix = get_common_complete_suffix(b.document, completions)
+
+    # One completion: insert it.
+    if len(completions) == 1:
+        b.delete_before_cursor(-completions[0].start_position)
+        b.insert_text(completions[0].text)
+    # Multiple completions with common part.
+    elif common_suffix:
+        b.insert_text(common_suffix)
+    # Otherwise: display all completions.
+    elif completions:
+        _display_completions_like_readline(event.app, completions)
+
+
+def _display_completions_like_readline(
+    app: "Application", completions: List[Completion]
+) -> "asyncio.Task[None]":
+    """
+    Display the list of completions in columns above the prompt.
+    This will ask for a confirmation if there are too many completions to fit
+    on a single page and provide a paginator to walk through them.
+    """
+    from prompt_toolkit.formatted_text import to_formatted_text
+    from prompt_toolkit.shortcuts.prompt import create_confirm_session
+
+    # Get terminal dimensions.
+    term_size = app.output.get_size()
+    term_width = term_size.columns
+    term_height = term_size.rows
+
+    # Calculate amount of required columns/rows for displaying the
+    # completions. (Keep in mind that completions are displayed
+    # alphabetically column-wise.)
+    max_compl_width = min(
+        term_width, max(get_cwidth(c.display_text) for c in completions) + 1
+    )
+    column_count = max(1, term_width // max_compl_width)
+    completions_per_page = column_count * (term_height - 1)
+    page_count = int(math.ceil(len(completions) / float(completions_per_page)))
+    # Note: math.ceil can return float on Python2.
+
+    def display(page: int) -> None:
+        # Display completions.
+        page_completions = completions[
+            page * completions_per_page : (page + 1) * completions_per_page
+        ]
+
+        page_row_count = int(math.ceil(len(page_completions) / float(column_count)))
+        page_columns = [
+            page_completions[i * page_row_count : (i + 1) * page_row_count]
+            for i in range(column_count)
+        ]
+
+        result: StyleAndTextTuples = []
+
+        for r in range(page_row_count):
+            for c in range(column_count):
+                try:
+                    completion = page_columns[c][r]
+                    style = "class:readline-like-completions.completion " + (
+                        completion.style or ""
+                    )
+
+                    result.extend(to_formatted_text(completion.display, style=style))
+
+                    # Add padding.
+                    padding = max_compl_width - get_cwidth(completion.display_text)
+                    result.append((completion.style, " " * padding))
+                except IndexError:
+                    pass
+            result.append(("", "\n"))
+
+        app.print_text(to_formatted_text(result, "class:readline-like-completions"))
+
+    # User interaction through an application generator function.
+    async def run_compl() -> None:
+        " Coroutine. "
+        async with in_terminal(render_cli_done=True):
+            if len(completions) > completions_per_page:
+                # Ask confirmation if it doesn't fit on the screen.
+                confirm = await create_confirm_session(
+                    "Display all {} possibilities?".format(len(completions)),
+                ).prompt_async()
+
+                if confirm:
+                    # Display pages.
+                    for page in range(page_count):
+                        display(page)
+
+                        if page != page_count - 1:
+                            # Display --MORE-- and go to the next page.
+                            show_more = await _create_more_session(
+                                "--MORE--"
+                            ).prompt_async()
+
+                            if not show_more:
+                                return
+                else:
+                    app.output.flush()
+            else:
+                # Display all completions.
+                display(0)
+
+    return app.create_background_task(run_compl())
+
+
+def _create_more_session(message: str = "--MORE--") -> "PromptSession":
+    """
+    Create a `PromptSession` object for displaying the "--MORE--".
+    """
+    from prompt_toolkit.shortcuts import PromptSession
+
+    bindings = KeyBindings()
+
+    @bindings.add(" ")
+    @bindings.add("y")
+    @bindings.add("Y")
+    @bindings.add(Keys.ControlJ)
+    @bindings.add(Keys.ControlM)
+    @bindings.add(Keys.ControlI)  # Tab.
+    def _yes(event: E) -> None:
+        event.app.exit(result=True)
+
+    @bindings.add("n")
+    @bindings.add("N")
+    @bindings.add("q")
+    @bindings.add("Q")
+    @bindings.add(Keys.ControlC)
+    def _no(event: E) -> None:
+        event.app.exit(result=False)
+
+    @bindings.add(Keys.Any)
+    def _ignore(event: E) -> None:
+        " Disable inserting of text. "
+
+    return PromptSession(message, key_bindings=bindings, erase_when_done=True)

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/cpr.py

@@ -0,0 +1,28 @@
+from prompt_toolkit.key_binding.key_processor import KeyPressEvent
+from prompt_toolkit.keys import Keys
+
+from ..key_bindings import KeyBindings
+
+__all__ = [
+    "load_cpr_bindings",
+]
+
+E = KeyPressEvent
+
+
+def load_cpr_bindings() -> KeyBindings:
+    key_bindings = KeyBindings()
+
+    @key_bindings.add(Keys.CPRResponse, save_before=lambda e: False)
+    def _(event: E) -> None:
+        """
+        Handle incoming Cursor-Position-Request response.
+        """
+        # The incoming data looks like u'\x1b[35;1R'
+        # Parse row/col information.
+        row, col = map(int, event.data[2:-1].split(";"))
+
+        # Report absolute cursor position to the renderer.
+        event.app.renderer.report_absolute_cursor_row(row)
+
+    return key_bindings

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/emacs.py

@@ -0,0 +1,556 @@
+# pylint: disable=function-redefined
+from typing import Dict, Union
+
+from prompt_toolkit.application.current import get_app
+from prompt_toolkit.buffer import Buffer, SelectionType, indent, unindent
+from prompt_toolkit.completion import CompleteEvent
+from prompt_toolkit.filters import (
+    Condition,
+    emacs_insert_mode,
+    emacs_mode,
+    has_arg,
+    has_selection,
+    in_paste_mode,
+    is_multiline,
+    is_read_only,
+    shift_selection_mode,
+    vi_search_direction_reversed,
+)
+from prompt_toolkit.key_binding.key_bindings import Binding
+from prompt_toolkit.key_binding.key_processor import KeyPressEvent
+from prompt_toolkit.keys import Keys
+
+from ..key_bindings import ConditionalKeyBindings, KeyBindings, KeyBindingsBase
+from .named_commands import get_by_name
+
+__all__ = [
+    "load_emacs_bindings",
+    "load_emacs_search_bindings",
+    "load_emacs_shift_selection_bindings",
+]
+
+E = KeyPressEvent
+
+
+def load_emacs_bindings() -> KeyBindingsBase:
+    """
+    Some e-macs extensions.
+    """
+    # Overview of Readline emacs commands:
+    # http://www.catonmat.net/download/readline-emacs-editing-mode-cheat-sheet.pdf
+    key_bindings = KeyBindings()
+    handle = key_bindings.add
+
+    insert_mode = emacs_insert_mode
+
+    @handle("escape")
+    def _esc(event: E) -> None:
+        """
+        By default, ignore escape key.
+
+        (If we don't put this here, and Esc is followed by a key which sequence
+        is not handled, we'll insert an Escape character in the input stream.
+        Something we don't want and happens to easily in emacs mode.
+        Further, people can always use ControlQ to do a quoted insert.)
+        """
+        pass
+
+    handle("c-a")(get_by_name("beginning-of-line"))
+    handle("c-b")(get_by_name("backward-char"))
+    handle("c-delete", filter=insert_mode)(get_by_name("kill-word"))
+    handle("c-e")(get_by_name("end-of-line"))
+    handle("c-f")(get_by_name("forward-char"))
+    handle("c-left")(get_by_name("backward-word"))
+    handle("c-right")(get_by_name("forward-word"))
+    handle("c-x", "r", "y", filter=insert_mode)(get_by_name("yank"))
+    handle("c-y", filter=insert_mode)(get_by_name("yank"))
+    handle("escape", "b")(get_by_name("backward-word"))
+    handle("escape", "c", filter=insert_mode)(get_by_name("capitalize-word"))
+    handle("escape", "d", filter=insert_mode)(get_by_name("kill-word"))
+    handle("escape", "f")(get_by_name("forward-word"))
+    handle("escape", "l", filter=insert_mode)(get_by_name("downcase-word"))
+    handle("escape", "u", filter=insert_mode)(get_by_name("uppercase-word"))
+    handle("escape", "y", filter=insert_mode)(get_by_name("yank-pop"))
+    handle("escape", "backspace", filter=insert_mode)(get_by_name("backward-kill-word"))
+    handle("escape", "\\", filter=insert_mode)(get_by_name("delete-horizontal-space"))
+
+    handle("c-home")(get_by_name("beginning-of-buffer"))
+    handle("c-end")(get_by_name("end-of-buffer"))
+
+    handle("c-_", save_before=(lambda e: False), filter=insert_mode)(
+        get_by_name("undo")
+    )
+
+    handle("c-x", "c-u", save_before=(lambda e: False), filter=insert_mode)(
+        get_by_name("undo")
+    )
+
+    handle("escape", "<", filter=~has_selection)(get_by_name("beginning-of-history"))
+    handle("escape", ">", filter=~has_selection)(get_by_name("end-of-history"))
+
+    handle("escape", ".", filter=insert_mode)(get_by_name("yank-last-arg"))
+    handle("escape", "_", filter=insert_mode)(get_by_name("yank-last-arg"))
+    handle("escape", "c-y", filter=insert_mode)(get_by_name("yank-nth-arg"))
+    handle("escape", "#", filter=insert_mode)(get_by_name("insert-comment"))
+    handle("c-o")(get_by_name("operate-and-get-next"))
+
+    # ControlQ does a quoted insert. Not that for vt100 terminals, you have to
+    # disable flow control by running ``stty -ixon``, otherwise Ctrl-Q and
+    # Ctrl-S are captured by the terminal.
+    handle("c-q", filter=~has_selection)(get_by_name("quoted-insert"))
+
+    handle("c-x", "(")(get_by_name("start-kbd-macro"))
+    handle("c-x", ")")(get_by_name("end-kbd-macro"))
+    handle("c-x", "e")(get_by_name("call-last-kbd-macro"))
+
+    @handle("c-n")
+    def _next(event: E) -> None:
+        " Next line. "
+        event.current_buffer.auto_down()
+
+    @handle("c-p")
+    def _prev(event: E) -> None:
+        " Previous line. "
+        event.current_buffer.auto_up(count=event.arg)
+
+    def handle_digit(c: str) -> None:
+        """
+        Handle input of arguments.
+        The first number needs to be preceded by escape.
+        """
+
+        @handle(c, filter=has_arg)
+        @handle("escape", c)
+        def _(event: E) -> None:
+            event.append_to_arg_count(c)
+
+    for c in "0123456789":
+        handle_digit(c)
+
+    @handle("escape", "-", filter=~has_arg)
+    def _meta_dash(event: E) -> None:
+        """"""
+        if event._arg is None:
+            event.append_to_arg_count("-")
+
+    @handle("-", filter=Condition(lambda: get_app().key_processor.arg == "-"))
+    def _dash(event: E) -> None:
+        """
+        When '-' is typed again, after exactly '-' has been given as an
+        argument, ignore this.
+        """
+        event.app.key_processor.arg = "-"
+
+    @Condition
+    def is_returnable() -> bool:
+        return get_app().current_buffer.is_returnable
+
+    # Meta + Enter: always accept input.
+    handle("escape", "enter", filter=insert_mode & is_returnable)(
+        get_by_name("accept-line")
+    )
+
+    # Enter: accept input in single line mode.
+    handle("enter", filter=insert_mode & is_returnable & ~is_multiline)(
+        get_by_name("accept-line")
+    )
+
+    def character_search(buff: Buffer, char: str, count: int) -> None:
+        if count < 0:
+            match = buff.document.find_backwards(
+                char, in_current_line=True, count=-count
+            )
+        else:
+            match = buff.document.find(char, in_current_line=True, count=count)
+
+        if match is not None:
+            buff.cursor_position += match
+
+    @handle("c-]", Keys.Any)
+    def _goto_char(event: E) -> None:
+        " When Ctl-] + a character is pressed. go to that character. "
+        # Also named 'character-search'
+        character_search(event.current_buffer, event.data, event.arg)
+
+    @handle("escape", "c-]", Keys.Any)
+    def _goto_char_backwards(event: E) -> None:
+        " Like Ctl-], but backwards. "
+        # Also named 'character-search-backward'
+        character_search(event.current_buffer, event.data, -event.arg)
+
+    @handle("escape", "a")
+    def _prev_sentence(event: E) -> None:
+        " Previous sentence. "
+        # TODO:
+
+    @handle("escape", "e")
+    def _end_of_sentence(event: E) -> None:
+        " Move to end of sentence. "
+        # TODO:
+
+    @handle("escape", "t", filter=insert_mode)
+    def _swap_characters(event: E) -> None:
+        """
+        Swap the last two words before the cursor.
+        """
+        # TODO
+
+    @handle("escape", "*", filter=insert_mode)
+    def _insert_all_completions(event: E) -> None:
+        """
+        `meta-*`: Insert all possible completions of the preceding text.
+        """
+        buff = event.current_buffer
+
+        # List all completions.
+        complete_event = CompleteEvent(text_inserted=False, completion_requested=True)
+        completions = list(
+            buff.completer.get_completions(buff.document, complete_event)
+        )
+
+        # Insert them.
+        text_to_insert = " ".join(c.text for c in completions)
+        buff.insert_text(text_to_insert)
+
+    @handle("c-x", "c-x")
+    def _toggle_start_end(event: E) -> None:
+        """
+        Move cursor back and forth between the start and end of the current
+        line.
+        """
+        buffer = event.current_buffer
+
+        if buffer.document.is_cursor_at_the_end_of_line:
+            buffer.cursor_position += buffer.document.get_start_of_line_position(
+                after_whitespace=False
+            )
+        else:
+            buffer.cursor_position += buffer.document.get_end_of_line_position()
+
+    @handle("c-@")  # Control-space or Control-@
+    def _start_selection(event: E) -> None:
+        """
+        Start of the selection (if the current buffer is not empty).
+        """
+        # Take the current cursor position as the start of this selection.
+        buff = event.current_buffer
+        if buff.text:
+            buff.start_selection(selection_type=SelectionType.CHARACTERS)
+
+    @handle("c-g", filter=~has_selection)
+    def _cancel(event: E) -> None:
+        """
+        Control + G: Cancel completion menu and validation state.
+        """
+        event.current_buffer.complete_state = None
+        event.current_buffer.validation_error = None
+
+    @handle("c-g", filter=has_selection)
+    def _cancel_selection(event: E) -> None:
+        """
+        Cancel selection.
+        """
+        event.current_buffer.exit_selection()
+
+    @handle("c-w", filter=has_selection)
+    @handle("c-x", "r", "k", filter=has_selection)
+    def _cut(event: E) -> None:
+        """
+        Cut selected text.
+        """
+        data = event.current_buffer.cut_selection()
+        event.app.clipboard.set_data(data)
+
+    @handle("escape", "w", filter=has_selection)
+    def _copy(event: E) -> None:
+        """
+        Copy selected text.
+        """
+        data = event.current_buffer.copy_selection()
+        event.app.clipboard.set_data(data)
+
+    @handle("escape", "left")
+    def _start_of_word(event: E) -> None:
+        """
+        Cursor to start of previous word.
+        """
+        buffer = event.current_buffer
+        buffer.cursor_position += (
+            buffer.document.find_previous_word_beginning(count=event.arg) or 0
+        )
+
+    @handle("escape", "right")
+    def _start_next_word(event: E) -> None:
+        """
+        Cursor to start of next word.
+        """
+        buffer = event.current_buffer
+        buffer.cursor_position += (
+            buffer.document.find_next_word_beginning(count=event.arg)
+            or buffer.document.get_end_of_document_position()
+        )
+
+    @handle("escape", "/", filter=insert_mode)
+    def _complete(event: E) -> None:
+        """
+        M-/: Complete.
+        """
+        b = event.current_buffer
+        if b.complete_state:
+            b.complete_next()
+        else:
+            b.start_completion(select_first=True)
+
+    @handle("c-c", ">", filter=has_selection)
+    def _indent(event: E) -> None:
+        """
+        Indent selected text.
+        """
+        buffer = event.current_buffer
+
+        buffer.cursor_position += buffer.document.get_start_of_line_position(
+            after_whitespace=True
+        )
+
+        from_, to = buffer.document.selection_range()
+        from_, _ = buffer.document.translate_index_to_position(from_)
+        to, _ = buffer.document.translate_index_to_position(to)
+
+        indent(buffer, from_, to + 1, count=event.arg)
+
+    @handle("c-c", "<", filter=has_selection)
+    def _unindent(event: E) -> None:
+        """
+        Unindent selected text.
+        """
+        buffer = event.current_buffer
+
+        from_, to = buffer.document.selection_range()
+        from_, _ = buffer.document.translate_index_to_position(from_)
+        to, _ = buffer.document.translate_index_to_position(to)
+
+        unindent(buffer, from_, to + 1, count=event.arg)
+
+    return ConditionalKeyBindings(key_bindings, emacs_mode)
+
+
+def load_emacs_search_bindings() -> KeyBindingsBase:
+    key_bindings = KeyBindings()
+    handle = key_bindings.add
+    from . import search
+
+    # NOTE: We don't bind 'Escape' to 'abort_search'. The reason is that we
+    #       want Alt+Enter to accept input directly in incremental search mode.
+    #       Instead, we have double escape.
+
+    handle("c-r")(search.start_reverse_incremental_search)
+    handle("c-s")(search.start_forward_incremental_search)
+
+    handle("c-c")(search.abort_search)
+    handle("c-g")(search.abort_search)
+    handle("c-r")(search.reverse_incremental_search)
+    handle("c-s")(search.forward_incremental_search)
+    handle("up")(search.reverse_incremental_search)
+    handle("down")(search.forward_incremental_search)
+    handle("enter")(search.accept_search)
+
+    # Handling of escape.
+    handle("escape", eager=True)(search.accept_search)
+
+    # Like Readline, it's more natural to accept the search when escape has
+    # been pressed, however instead the following two bindings could be used
+    # instead.
+    # #handle('escape', 'escape', eager=True)(search.abort_search)
+    # #handle('escape', 'enter', eager=True)(search.accept_search_and_accept_input)
+
+    # If Read-only: also include the following key bindings:
+
+    # '/' and '?' key bindings for searching, just like Vi mode.
+    handle("?", filter=is_read_only & ~vi_search_direction_reversed)(
+        search.start_reverse_incremental_search
+    )
+    handle("/", filter=is_read_only & ~vi_search_direction_reversed)(
+        search.start_forward_incremental_search
+    )
+    handle("?", filter=is_read_only & vi_search_direction_reversed)(
+        search.start_forward_incremental_search
+    )
+    handle("/", filter=is_read_only & vi_search_direction_reversed)(
+        search.start_reverse_incremental_search
+    )
+
+    @handle("n", filter=is_read_only)
+    def _jump_next(event: E) -> None:
+        " Jump to next match. "
+        event.current_buffer.apply_search(
+            event.app.current_search_state,
+            include_current_position=False,
+            count=event.arg,
+        )
+
+    @handle("N", filter=is_read_only)
+    def _jump_prev(event: E) -> None:
+        " Jump to previous match. "
+        event.current_buffer.apply_search(
+            ~event.app.current_search_state,
+            include_current_position=False,
+            count=event.arg,
+        )
+
+    return ConditionalKeyBindings(key_bindings, emacs_mode)
+
+
+def load_emacs_shift_selection_bindings() -> KeyBindingsBase:
+    """
+    Bindings to select text with shift + cursor movements
+    """
+
+    key_bindings = KeyBindings()
+    handle = key_bindings.add
+
+    def unshift_move(event: E) -> None:
+        """
+        Used for the shift selection mode. When called with
+        a shift + movement key press event, moves the cursor
+        as if shift is not pressed.
+        """
+        key = event.key_sequence[0].key
+
+        if key == Keys.ShiftUp:
+            event.current_buffer.auto_up(count=event.arg)
+            return
+        if key == Keys.ShiftDown:
+            event.current_buffer.auto_down(count=event.arg)
+            return
+
+        # the other keys are handled through their readline command
+        key_to_command: Dict[Union[Keys, str], str] = {
+            Keys.ShiftLeft: "backward-char",
+            Keys.ShiftRight: "forward-char",
+            Keys.ShiftHome: "beginning-of-line",
+            Keys.ShiftEnd: "end-of-line",
+            Keys.ControlShiftLeft: "backward-word",
+            Keys.ControlShiftRight: "forward-word",
+            Keys.ControlShiftHome: "beginning-of-buffer",
+            Keys.ControlShiftEnd: "end-of-buffer",
+        }
+
+        try:
+            # Both the dict lookup and `get_by_name` can raise KeyError.
+            binding = get_by_name(key_to_command[key])
+        except KeyError:
+            pass
+        else:  # (`else` is not really needed here.)
+            if isinstance(binding, Binding):
+                # (It should always be a binding here)
+                binding.call(event)
+
+    @handle("s-left", filter=~has_selection)
+    @handle("s-right", filter=~has_selection)
+    @handle("s-up", filter=~has_selection)
+    @handle("s-down", filter=~has_selection)
+    @handle("s-home", filter=~has_selection)
+    @handle("s-end", filter=~has_selection)
+    @handle("c-s-left", filter=~has_selection)
+    @handle("c-s-right", filter=~has_selection)
+    @handle("c-s-home", filter=~has_selection)
+    @handle("c-s-end", filter=~has_selection)
+    def _start_selection(event: E) -> None:
+        """
+        Start selection with shift + movement.
+        """
+        # Take the current cursor position as the start of this selection.
+        buff = event.current_buffer
+        if buff.text:
+            buff.start_selection(selection_type=SelectionType.CHARACTERS)
+
+            if buff.selection_state is not None:
+                # (`selection_state` should never be `None`, it is created by
+                # `start_selection`.)
+                buff.selection_state.enter_shift_mode()
+
+            # Then move the cursor
+            original_position = buff.cursor_position
+            unshift_move(event)
+            if buff.cursor_position == original_position:
+                # Cursor didn't actually move - so cancel selection
+                # to avoid having an empty selection
+                buff.exit_selection()
+
+    @handle("s-left", filter=shift_selection_mode)
+    @handle("s-right", filter=shift_selection_mode)
+    @handle("s-up", filter=shift_selection_mode)
+    @handle("s-down", filter=shift_selection_mode)
+    @handle("s-home", filter=shift_selection_mode)
+    @handle("s-end", filter=shift_selection_mode)
+    @handle("c-s-left", filter=shift_selection_mode)
+    @handle("c-s-right", filter=shift_selection_mode)
+    @handle("c-s-home", filter=shift_selection_mode)
+    @handle("c-s-end", filter=shift_selection_mode)
+    def _extend_selection(event: E) -> None:
+        """
+        Extend the selection
+        """
+        # Just move the cursor, like shift was not pressed
+        unshift_move(event)
+        buff = event.current_buffer
+
+        if buff.selection_state is not None:
+            if buff.cursor_position == buff.selection_state.original_cursor_position:
+                # selection is now empty, so cancel selection
+                buff.exit_selection()
+
+    @handle(Keys.Any, filter=shift_selection_mode)
+    def _replace_selection(event: E) -> None:
+        """
+        Replace selection by what is typed
+        """
+        event.current_buffer.cut_selection()
+        get_by_name("self-insert").call(event)
+
+    @handle("enter", filter=shift_selection_mode & is_multiline)
+    def _newline(event: E) -> None:
+        """
+        A newline replaces the selection
+        """
+        event.current_buffer.cut_selection()
+        event.current_buffer.newline(copy_margin=not in_paste_mode())
+
+    @handle("backspace", filter=shift_selection_mode)
+    def _delete(event: E) -> None:
+        """
+        Delete selection.
+        """
+        event.current_buffer.cut_selection()
+
+    @handle("c-y", filter=shift_selection_mode)
+    def _yank(event: E) -> None:
+        """
+        In shift selection mode, yanking (pasting) replace the selection.
+        """
+        buff = event.current_buffer
+        if buff.selection_state:
+            buff.cut_selection()
+        get_by_name("yank").call(event)
+
+    # moving the cursor in shift selection mode cancels the selection
+    @handle("left", filter=shift_selection_mode)
+    @handle("right", filter=shift_selection_mode)
+    @handle("up", filter=shift_selection_mode)
+    @handle("down", filter=shift_selection_mode)
+    @handle("home", filter=shift_selection_mode)
+    @handle("end", filter=shift_selection_mode)
+    @handle("c-left", filter=shift_selection_mode)
+    @handle("c-right", filter=shift_selection_mode)
+    @handle("c-home", filter=shift_selection_mode)
+    @handle("c-end", filter=shift_selection_mode)
+    def _cancel(event: E) -> None:
+        """
+        Cancel selection.
+        """
+        event.current_buffer.exit_selection()
+        # we then process the cursor movement
+        key_press = event.key_sequence[0]
+        event.key_processor.feed(key_press, first=True)
+
+    return ConditionalKeyBindings(key_bindings, emacs_mode)

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/focus.py

@@ -0,0 +1,24 @@
+from prompt_toolkit.key_binding.key_processor import KeyPressEvent
+
+__all__ = [
+    "focus_next",
+    "focus_previous",
+]
+
+E = KeyPressEvent
+
+
+def focus_next(event: E) -> None:
+    """
+    Focus the next visible Window.
+    (Often bound to the `Tab` key.)
+    """
+    event.app.layout.focus_next()
+
+
+def focus_previous(event: E) -> None:
+    """
+    Focus the previous visible Window.
+    (Often bound to the `BackTab` key.)
+    """
+    event.app.layout.focus_previous()

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/mouse.py

@@ -0,0 +1,146 @@
+from prompt_toolkit.data_structures import Point
+from prompt_toolkit.key_binding.key_processor import KeyPress, KeyPressEvent
+from prompt_toolkit.keys import Keys
+from prompt_toolkit.mouse_events import MouseEvent, MouseEventType
+from prompt_toolkit.utils import is_windows
+
+from ..key_bindings import KeyBindings
+
+__all__ = [
+    "load_mouse_bindings",
+]
+
+E = KeyPressEvent
+
+
+def load_mouse_bindings() -> KeyBindings:
+    """
+    Key bindings, required for mouse support.
+    (Mouse events enter through the key binding system.)
+    """
+    key_bindings = KeyBindings()
+
+    @key_bindings.add(Keys.Vt100MouseEvent)
+    def _(event: E) -> None:
+        """
+        Handling of incoming mouse event.
+        """
+        # TypicaL:   "eSC[MaB*"
+        # Urxvt:     "Esc[96;14;13M"
+        # Xterm SGR: "Esc[<64;85;12M"
+
+        # Parse incoming packet.
+        if event.data[2] == "M":
+            # Typical.
+            mouse_event, x, y = map(ord, event.data[3:])
+            mouse_event_type = {
+                32: MouseEventType.MOUSE_DOWN,
+                35: MouseEventType.MOUSE_UP,
+                96: MouseEventType.SCROLL_UP,
+                97: MouseEventType.SCROLL_DOWN,
+            }.get(mouse_event)
+
+            # Handle situations where `PosixStdinReader` used surrogateescapes.
+            if x >= 0xDC00:
+                x -= 0xDC00
+            if y >= 0xDC00:
+                y -= 0xDC00
+
+            x -= 32
+            y -= 32
+        else:
+            # Urxvt and Xterm SGR.
+            # When the '<' is not present, we are not using the Xterm SGR mode,
+            # but Urxvt instead.
+            data = event.data[2:]
+            if data[:1] == "<":
+                sgr = True
+                data = data[1:]
+            else:
+                sgr = False
+
+            # Extract coordinates.
+            mouse_event, x, y = map(int, data[:-1].split(";"))
+            m = data[-1]
+
+            # Parse event type.
+            if sgr:
+                mouse_event_type = {
+                    (0, "M"): MouseEventType.MOUSE_DOWN,
+                    (0, "m"): MouseEventType.MOUSE_UP,
+                    (64, "M"): MouseEventType.SCROLL_UP,
+                    (65, "M"): MouseEventType.SCROLL_DOWN,
+                }.get((mouse_event, m))
+            else:
+                mouse_event_type = {
+                    32: MouseEventType.MOUSE_DOWN,
+                    35: MouseEventType.MOUSE_UP,
+                    96: MouseEventType.SCROLL_UP,
+                    97: MouseEventType.SCROLL_DOWN,
+                }.get(mouse_event)
+
+        x -= 1
+        y -= 1
+
+        # Only handle mouse events when we know the window height.
+        if event.app.renderer.height_is_known and mouse_event_type is not None:
+            # Take region above the layout into account. The reported
+            # coordinates are absolute to the visible part of the terminal.
+            from prompt_toolkit.renderer import HeightIsUnknownError
+
+            try:
+                y -= event.app.renderer.rows_above_layout
+            except HeightIsUnknownError:
+                return
+
+            # Call the mouse handler from the renderer.
+            handler = event.app.renderer.mouse_handlers.mouse_handlers[x, y]
+            handler(MouseEvent(position=Point(x=x, y=y), event_type=mouse_event_type))
+
+    @key_bindings.add(Keys.ScrollUp)
+    def _scroll_up(event: E) -> None:
+        """
+        Scroll up event without cursor position.
+        """
+        # We don't receive a cursor position, so we don't know which window to
+        # scroll. Just send an 'up' key press instead.
+        event.key_processor.feed(KeyPress(Keys.Up), first=True)
+
+    @key_bindings.add(Keys.ScrollDown)
+    def _scroll_down(event: E) -> None:
+        """
+        Scroll down event without cursor position.
+        """
+        event.key_processor.feed(KeyPress(Keys.Down), first=True)
+
+    @key_bindings.add(Keys.WindowsMouseEvent)
+    def _mouse(event: E) -> None:
+        """
+        Handling of mouse events for Windows.
+        """
+        assert is_windows()  # This key binding should only exist for Windows.
+
+        # Parse data.
+        pieces = event.data.split(";")
+
+        event_type = MouseEventType(pieces[0])
+        x = int(pieces[1])
+        y = int(pieces[2])
+
+        # Make coordinates absolute to the visible part of the terminal.
+        output = event.app.renderer.output
+
+        from prompt_toolkit.output.win32 import Win32Output
+
+        if isinstance(output, Win32Output):
+            screen_buffer_info = output.get_win32_screen_buffer_info()
+            rows_above_cursor = (
+                screen_buffer_info.dwCursorPosition.Y - event.app.renderer._cursor_pos.y
+            )
+            y -= rows_above_cursor
+
+            # Call the mouse event handler.
+            handler = event.app.renderer.mouse_handlers.mouse_handlers[x, y]
+            handler(MouseEvent(position=Point(x=x, y=y), event_type=event_type))
+
+    return key_bindings

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/named_commands.py

@@ -0,0 +1,687 @@
+"""
+Key bindings which are also known by GNU Readline by the given names.
+
+See: http://www.delorie.com/gnu/docs/readline/rlman_13.html
+"""
+from typing import Callable, Dict, TypeVar, Union, cast
+
+from prompt_toolkit.document import Document
+from prompt_toolkit.enums import EditingMode
+from prompt_toolkit.key_binding.key_bindings import Binding, key_binding
+from prompt_toolkit.key_binding.key_processor import KeyPress, KeyPressEvent
+from prompt_toolkit.keys import Keys
+from prompt_toolkit.layout.controls import BufferControl
+from prompt_toolkit.search import SearchDirection
+from prompt_toolkit.selection import PasteMode
+
+from .completion import display_completions_like_readline, generate_completions
+
+__all__ = [
+    "get_by_name",
+]
+
+
+# Typing.
+_Handler = Callable[[KeyPressEvent], None]
+_HandlerOrBinding = Union[_Handler, Binding]
+_T = TypeVar("_T", bound=_HandlerOrBinding)
+E = KeyPressEvent
+
+
+# Registry that maps the Readline command names to their handlers.
+_readline_commands: Dict[str, Binding] = {}
+
+
+def register(name: str) -> Callable[[_T], _T]:
+    """
+    Store handler in the `_readline_commands` dictionary.
+    """
+
+    def decorator(handler: _T) -> _T:
+        " `handler` is a callable or Binding. "
+        if isinstance(handler, Binding):
+            _readline_commands[name] = handler
+        else:
+            _readline_commands[name] = key_binding()(cast(_Handler, handler))
+
+        return handler
+
+    return decorator
+
+
+def get_by_name(name: str) -> Binding:
+    """
+    Return the handler for the (Readline) command with the given name.
+    """
+    try:
+        return _readline_commands[name]
+    except KeyError as e:
+        raise KeyError("Unknown Readline command: %r" % name) from e
+
+
+#
+# Commands for moving
+# See: http://www.delorie.com/gnu/docs/readline/rlman_14.html
+#
+
+
+@register("beginning-of-buffer")
+def beginning_of_buffer(event: E) -> None:
+    """
+    Move to the start of the buffer.
+    """
+    buff = event.current_buffer
+    buff.cursor_position = 0
+
+
+@register("end-of-buffer")
+def end_of_buffer(event: E) -> None:
+    """
+    Move to the end of the buffer.
+    """
+    buff = event.current_buffer
+    buff.cursor_position = len(buff.text)
+
+
+@register("beginning-of-line")
+def beginning_of_line(event: E) -> None:
+    """
+    Move to the start of the current line.
+    """
+    buff = event.current_buffer
+    buff.cursor_position += buff.document.get_start_of_line_position(
+        after_whitespace=False
+    )
+
+
+@register("end-of-line")
+def end_of_line(event: E) -> None:
+    """
+    Move to the end of the line.
+    """
+    buff = event.current_buffer
+    buff.cursor_position += buff.document.get_end_of_line_position()
+
+
+@register("forward-char")
+def forward_char(event: E) -> None:
+    """
+    Move forward a character.
+    """
+    buff = event.current_buffer
+    buff.cursor_position += buff.document.get_cursor_right_position(count=event.arg)
+
+
+@register("backward-char")
+def backward_char(event: E) -> None:
+    " Move back a character. "
+    buff = event.current_buffer
+    buff.cursor_position += buff.document.get_cursor_left_position(count=event.arg)
+
+
+@register("forward-word")
+def forward_word(event: E) -> None:
+    """
+    Move forward to the end of the next word. Words are composed of letters and
+    digits.
+    """
+    buff = event.current_buffer
+    pos = buff.document.find_next_word_ending(count=event.arg)
+
+    if pos:
+        buff.cursor_position += pos
+
+
+@register("backward-word")
+def backward_word(event: E) -> None:
+    """
+    Move back to the start of the current or previous word. Words are composed
+    of letters and digits.
+    """
+    buff = event.current_buffer
+    pos = buff.document.find_previous_word_beginning(count=event.arg)
+
+    if pos:
+        buff.cursor_position += pos
+
+
+@register("clear-screen")
+def clear_screen(event: E) -> None:
+    """
+    Clear the screen and redraw everything at the top of the screen.
+    """
+    event.app.renderer.clear()
+
+
+@register("redraw-current-line")
+def redraw_current_line(event: E) -> None:
+    """
+    Refresh the current line.
+    (Readline defines this command, but prompt-toolkit doesn't have it.)
+    """
+    pass
+
+
+#
+# Commands for manipulating the history.
+# See: http://www.delorie.com/gnu/docs/readline/rlman_15.html
+#
+
+
+@register("accept-line")
+def accept_line(event: E) -> None:
+    """
+    Accept the line regardless of where the cursor is.
+    """
+    event.current_buffer.validate_and_handle()
+
+
+@register("previous-history")
+def previous_history(event: E) -> None:
+    """
+    Move `back` through the history list, fetching the previous command.
+    """
+    event.current_buffer.history_backward(count=event.arg)
+
+
+@register("next-history")
+def next_history(event: E) -> None:
+    """
+    Move `forward` through the history list, fetching the next command.
+    """
+    event.current_buffer.history_forward(count=event.arg)
+
+
+@register("beginning-of-history")
+def beginning_of_history(event: E) -> None:
+    """
+    Move to the first line in the history.
+    """
+    event.current_buffer.go_to_history(0)
+
+
+@register("end-of-history")
+def end_of_history(event: E) -> None:
+    """
+    Move to the end of the input history, i.e., the line currently being entered.
+    """
+    event.current_buffer.history_forward(count=10 ** 100)
+    buff = event.current_buffer
+    buff.go_to_history(len(buff._working_lines) - 1)
+
+
+@register("reverse-search-history")
+def reverse_search_history(event: E) -> None:
+    """
+    Search backward starting at the current line and moving `up` through
+    the history as necessary. This is an incremental search.
+    """
+    control = event.app.layout.current_control
+
+    if isinstance(control, BufferControl) and control.search_buffer_control:
+        event.app.current_search_state.direction = SearchDirection.BACKWARD
+        event.app.layout.current_control = control.search_buffer_control
+
+
+#
+# Commands for changing text
+#
+
+
+@register("end-of-file")
+def end_of_file(event: E) -> None:
+    """
+    Exit.
+    """
+    event.app.exit()
+
+
+@register("delete-char")
+def delete_char(event: E) -> None:
+    """
+    Delete character before the cursor.
+    """
+    deleted = event.current_buffer.delete(count=event.arg)
+    if not deleted:
+        event.app.output.bell()
+
+
+@register("backward-delete-char")
+def backward_delete_char(event: E) -> None:
+    """
+    Delete the character behind the cursor.
+    """
+    if event.arg < 0:
+        # When a negative argument has been given, this should delete in front
+        # of the cursor.
+        deleted = event.current_buffer.delete(count=-event.arg)
+    else:
+        deleted = event.current_buffer.delete_before_cursor(count=event.arg)
+
+    if not deleted:
+        event.app.output.bell()
+
+
+@register("self-insert")
+def self_insert(event: E) -> None:
+    """
+    Insert yourself.
+    """
+    event.current_buffer.insert_text(event.data * event.arg)
+
+
+@register("transpose-chars")
+def transpose_chars(event: E) -> None:
+    """
+    Emulate Emacs transpose-char behavior: at the beginning of the buffer,
+    do nothing.  At the end of a line or buffer, swap the characters before
+    the cursor.  Otherwise, move the cursor right, and then swap the
+    characters before the cursor.
+    """
+    b = event.current_buffer
+    p = b.cursor_position
+    if p == 0:
+        return
+    elif p == len(b.text) or b.text[p] == "\n":
+        b.swap_characters_before_cursor()
+    else:
+        b.cursor_position += b.document.get_cursor_right_position()
+        b.swap_characters_before_cursor()
+
+
+@register("uppercase-word")
+def uppercase_word(event: E) -> None:
+    """
+    Uppercase the current (or following) word.
+    """
+    buff = event.current_buffer
+
+    for i in range(event.arg):
+        pos = buff.document.find_next_word_ending()
+        words = buff.document.text_after_cursor[:pos]
+        buff.insert_text(words.upper(), overwrite=True)
+
+
+@register("downcase-word")
+def downcase_word(event: E) -> None:
+    """
+    Lowercase the current (or following) word.
+    """
+    buff = event.current_buffer
+
+    for i in range(event.arg):  # XXX: not DRY: see meta_c and meta_u!!
+        pos = buff.document.find_next_word_ending()
+        words = buff.document.text_after_cursor[:pos]
+        buff.insert_text(words.lower(), overwrite=True)
+
+
+@register("capitalize-word")
+def capitalize_word(event: E) -> None:
+    """
+    Capitalize the current (or following) word.
+    """
+    buff = event.current_buffer
+
+    for i in range(event.arg):
+        pos = buff.document.find_next_word_ending()
+        words = buff.document.text_after_cursor[:pos]
+        buff.insert_text(words.title(), overwrite=True)
+
+
+@register("quoted-insert")
+def quoted_insert(event: E) -> None:
+    """
+    Add the next character typed to the line verbatim. This is how to insert
+    key sequences like C-q, for example.
+    """
+    event.app.quoted_insert = True
+
+
+#
+# Killing and yanking.
+#
+
+
+@register("kill-line")
+def kill_line(event: E) -> None:
+    """
+    Kill the text from the cursor to the end of the line.
+
+    If we are at the end of the line, this should remove the newline.
+    (That way, it is possible to delete multiple lines by executing this
+    command multiple times.)
+    """
+    buff = event.current_buffer
+    if event.arg < 0:
+        deleted = buff.delete_before_cursor(
+            count=-buff.document.get_start_of_line_position()
+        )
+    else:
+        if buff.document.current_char == "\n":
+            deleted = buff.delete(1)
+        else:
+            deleted = buff.delete(count=buff.document.get_end_of_line_position())
+    event.app.clipboard.set_text(deleted)
+
+
+@register("kill-word")
+def kill_word(event: E) -> None:
+    """
+    Kill from point to the end of the current word, or if between words, to the
+    end of the next word. Word boundaries are the same as forward-word.
+    """
+    buff = event.current_buffer
+    pos = buff.document.find_next_word_ending(count=event.arg)
+
+    if pos:
+        deleted = buff.delete(count=pos)
+
+        if event.is_repeat:
+            deleted = event.app.clipboard.get_data().text + deleted
+
+        event.app.clipboard.set_text(deleted)
+
+
+@register("unix-word-rubout")
+def unix_word_rubout(event: E, WORD: bool = True) -> None:
+    """
+    Kill the word behind point, using whitespace as a word boundary.
+    Usually bound to ControlW.
+    """
+    buff = event.current_buffer
+    pos = buff.document.find_start_of_previous_word(count=event.arg, WORD=WORD)
+
+    if pos is None:
+        # Nothing found? delete until the start of the document.  (The
+        # input starts with whitespace and no words were found before the
+        # cursor.)
+        pos = -buff.cursor_position
+
+    if pos:
+        deleted = buff.delete_before_cursor(count=-pos)
+
+        # If the previous key press was also Control-W, concatenate deleted
+        # text.
+        if event.is_repeat:
+            deleted += event.app.clipboard.get_data().text
+
+        event.app.clipboard.set_text(deleted)
+    else:
+        # Nothing to delete. Bell.
+        event.app.output.bell()
+
+
+@register("backward-kill-word")
+def backward_kill_word(event: E) -> None:
+    """
+    Kills the word before point, using "not a letter nor a digit" as a word boundary.
+    Usually bound to M-Del or M-Backspace.
+    """
+    unix_word_rubout(event, WORD=False)
+
+
+@register("delete-horizontal-space")
+def delete_horizontal_space(event: E) -> None:
+    """
+    Delete all spaces and tabs around point.
+    """
+    buff = event.current_buffer
+    text_before_cursor = buff.document.text_before_cursor
+    text_after_cursor = buff.document.text_after_cursor
+
+    delete_before = len(text_before_cursor) - len(text_before_cursor.rstrip("\t "))
+    delete_after = len(text_after_cursor) - len(text_after_cursor.lstrip("\t "))
+
+    buff.delete_before_cursor(count=delete_before)
+    buff.delete(count=delete_after)
+
+
+@register("unix-line-discard")
+def unix_line_discard(event: E) -> None:
+    """
+    Kill backward from the cursor to the beginning of the current line.
+    """
+    buff = event.current_buffer
+
+    if buff.document.cursor_position_col == 0 and buff.document.cursor_position > 0:
+        buff.delete_before_cursor(count=1)
+    else:
+        deleted = buff.delete_before_cursor(
+            count=-buff.document.get_start_of_line_position()
+        )
+        event.app.clipboard.set_text(deleted)
+
+
+@register("yank")
+def yank(event: E) -> None:
+    """
+    Paste before cursor.
+    """
+    event.current_buffer.paste_clipboard_data(
+        event.app.clipboard.get_data(), count=event.arg, paste_mode=PasteMode.EMACS
+    )
+
+
+@register("yank-nth-arg")
+def yank_nth_arg(event: E) -> None:
+    """
+    Insert the first argument of the previous command. With an argument, insert
+    the nth word from the previous command (start counting at 0).
+    """
+    n = event.arg if event.arg_present else None
+    event.current_buffer.yank_nth_arg(n)
+
+
+@register("yank-last-arg")
+def yank_last_arg(event: E) -> None:
+    """
+    Like `yank_nth_arg`, but if no argument has been given, yank the last word
+    of each line.
+    """
+    n = event.arg if event.arg_present else None
+    event.current_buffer.yank_last_arg(n)
+
+
+@register("yank-pop")
+def yank_pop(event: E) -> None:
+    """
+    Rotate the kill ring, and yank the new top. Only works following yank or
+    yank-pop.
+    """
+    buff = event.current_buffer
+    doc_before_paste = buff.document_before_paste
+    clipboard = event.app.clipboard
+
+    if doc_before_paste is not None:
+        buff.document = doc_before_paste
+        clipboard.rotate()
+        buff.paste_clipboard_data(clipboard.get_data(), paste_mode=PasteMode.EMACS)
+
+
+#
+# Completion.
+#
+
+
+@register("complete")
+def complete(event: E) -> None:
+    """
+    Attempt to perform completion.
+    """
+    display_completions_like_readline(event)
+
+
+@register("menu-complete")
+def menu_complete(event: E) -> None:
+    """
+    Generate completions, or go to the next completion. (This is the default
+    way of completing input in prompt_toolkit.)
+    """
+    generate_completions(event)
+
+
+@register("menu-complete-backward")
+def menu_complete_backward(event: E) -> None:
+    """
+    Move backward through the list of possible completions.
+    """
+    event.current_buffer.complete_previous()
+
+
+#
+# Keyboard macros.
+#
+
+
+@register("start-kbd-macro")
+def start_kbd_macro(event: E) -> None:
+    """
+    Begin saving the characters typed into the current keyboard macro.
+    """
+    event.app.emacs_state.start_macro()
+
+
+@register("end-kbd-macro")
+def end_kbd_macro(event: E) -> None:
+    """
+    Stop saving the characters typed into the current keyboard macro and save
+    the definition.
+    """
+    event.app.emacs_state.end_macro()
+
+
+@register("call-last-kbd-macro")
+@key_binding(record_in_macro=False)
+def call_last_kbd_macro(event: E) -> None:
+    """
+    Re-execute the last keyboard macro defined, by making the characters in the
+    macro appear as if typed at the keyboard.
+
+    Notice that we pass `record_in_macro=False`. This ensures that the 'c-x e'
+    key sequence doesn't appear in the recording itself. This function inserts
+    the body of the called macro back into the KeyProcessor, so these keys will
+    be added later on to the macro of their handlers have `record_in_macro=True`.
+    """
+    # Insert the macro.
+    macro = event.app.emacs_state.macro
+
+    if macro:
+        event.app.key_processor.feed_multiple(macro, first=True)
+
+
+@register("print-last-kbd-macro")
+def print_last_kbd_macro(event: E) -> None:
+    """
+    Print the last keyboard macro.
+    """
+    # TODO: Make the format suitable for the inputrc file.
+    def print_macro() -> None:
+        macro = event.app.emacs_state.macro
+        if macro:
+            for k in macro:
+                print(k)
+
+    from prompt_toolkit.application.run_in_terminal import run_in_terminal
+
+    run_in_terminal(print_macro)
+
+
+#
+# Miscellaneous Commands.
+#
+
+
+@register("undo")
+def undo(event: E) -> None:
+    """
+    Incremental undo.
+    """
+    event.current_buffer.undo()
+
+
+@register("insert-comment")
+def insert_comment(event: E) -> None:
+    """
+    Without numeric argument, comment all lines.
+    With numeric argument, uncomment all lines.
+    In any case accept the input.
+    """
+    buff = event.current_buffer
+
+    # Transform all lines.
+    if event.arg != 1:
+
+        def change(line: str) -> str:
+            return line[1:] if line.startswith("#") else line
+
+    else:
+
+        def change(line: str) -> str:
+            return "#" + line
+
+    buff.document = Document(
+        text="\n".join(map(change, buff.text.splitlines())), cursor_position=0
+    )
+
+    # Accept input.
+    buff.validate_and_handle()
+
+
+@register("vi-editing-mode")
+def vi_editing_mode(event: E) -> None:
+    """
+    Switch to Vi editing mode.
+    """
+    event.app.editing_mode = EditingMode.VI
+
+
+@register("emacs-editing-mode")
+def emacs_editing_mode(event: E) -> None:
+    """
+    Switch to Emacs editing mode.
+    """
+    event.app.editing_mode = EditingMode.EMACS
+
+
+@register("prefix-meta")
+def prefix_meta(event: E) -> None:
+    """
+    Metafy the next character typed. This is for keyboards without a meta key.
+
+    Sometimes people also want to bind other keys to Meta, e.g. 'jj'::
+
+        key_bindings.add_key_binding('j', 'j', filter=ViInsertMode())(prefix_meta)
+    """
+    # ('first' should be true, because we want to insert it at the current
+    # position in the queue.)
+    event.app.key_processor.feed(KeyPress(Keys.Escape), first=True)
+
+
+@register("operate-and-get-next")
+def operate_and_get_next(event: E) -> None:
+    """
+    Accept the current line for execution and fetch the next line relative to
+    the current line from the history for editing.
+    """
+    buff = event.current_buffer
+    new_index = buff.working_index + 1
+
+    # Accept the current input. (This will also redraw the interface in the
+    # 'done' state.)
+    buff.validate_and_handle()
+
+    # Set the new index at the start of the next run.
+    def set_working_index() -> None:
+        if new_index < len(buff._working_lines):
+            buff.working_index = new_index
+
+    event.app.pre_run_callables.append(set_working_index)
+
+
+@register("edit-and-execute-command")
+def edit_and_execute(event: E) -> None:
+    """
+    Invoke an editor on the current command line, and accept the result.
+    """
+    buff = event.current_buffer
+    buff.open_in_editor(validate_and_handle=True)

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/open_in_editor.py

@@ -0,0 +1,49 @@
+"""
+Open in editor key bindings.
+"""
+from prompt_toolkit.filters import emacs_mode, has_selection, vi_navigation_mode
+
+from ..key_bindings import KeyBindings, KeyBindingsBase, merge_key_bindings
+from .named_commands import get_by_name
+
+__all__ = [
+    "load_open_in_editor_bindings",
+    "load_emacs_open_in_editor_bindings",
+    "load_vi_open_in_editor_bindings",
+]
+
+
+def load_open_in_editor_bindings() -> KeyBindingsBase:
+    """
+    Load both the Vi and emacs key bindings for handling edit-and-execute-command.
+    """
+    return merge_key_bindings(
+        [
+            load_emacs_open_in_editor_bindings(),
+            load_vi_open_in_editor_bindings(),
+        ]
+    )
+
+
+def load_emacs_open_in_editor_bindings() -> KeyBindings:
+    """
+    Pressing C-X C-E will open the buffer in an external editor.
+    """
+    key_bindings = KeyBindings()
+
+    key_bindings.add("c-x", "c-e", filter=emacs_mode & ~has_selection)(
+        get_by_name("edit-and-execute-command")
+    )
+
+    return key_bindings
+
+
+def load_vi_open_in_editor_bindings() -> KeyBindings:
+    """
+    Pressing 'v' in navigation mode will open the buffer in an external editor.
+    """
+    key_bindings = KeyBindings()
+    key_bindings.add("v", filter=vi_navigation_mode)(
+        get_by_name("edit-and-execute-command")
+    )
+    return key_bindings

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/page_navigation.py

@@ -0,0 +1,82 @@
+"""
+Key bindings for extra page navigation: bindings for up/down scrolling through
+long pages, like in Emacs or Vi.
+"""
+from prompt_toolkit.filters import buffer_has_focus, emacs_mode, vi_mode
+from prompt_toolkit.key_binding.key_bindings import (
+    ConditionalKeyBindings,
+    KeyBindings,
+    KeyBindingsBase,
+    merge_key_bindings,
+)
+
+from .scroll import (
+    scroll_backward,
+    scroll_forward,
+    scroll_half_page_down,
+    scroll_half_page_up,
+    scroll_one_line_down,
+    scroll_one_line_up,
+    scroll_page_down,
+    scroll_page_up,
+)
+
+__all__ = [
+    "load_page_navigation_bindings",
+    "load_emacs_page_navigation_bindings",
+    "load_vi_page_navigation_bindings",
+]
+
+
+def load_page_navigation_bindings() -> KeyBindingsBase:
+    """
+    Load both the Vi and Emacs bindings for page navigation.
+    """
+    # Only enable when a `Buffer` is focused, otherwise, we would catch keys
+    # when another widget is focused (like for instance `c-d` in a
+    # ptterm.Terminal).
+    return ConditionalKeyBindings(
+        merge_key_bindings(
+            [
+                load_emacs_page_navigation_bindings(),
+                load_vi_page_navigation_bindings(),
+            ]
+        ),
+        buffer_has_focus,
+    )
+
+
+def load_emacs_page_navigation_bindings() -> KeyBindingsBase:
+    """
+    Key bindings, for scrolling up and down through pages.
+    This are separate bindings, because GNU readline doesn't have them.
+    """
+    key_bindings = KeyBindings()
+    handle = key_bindings.add
+
+    handle("c-v")(scroll_page_down)
+    handle("pagedown")(scroll_page_down)
+    handle("escape", "v")(scroll_page_up)
+    handle("pageup")(scroll_page_up)
+
+    return ConditionalKeyBindings(key_bindings, emacs_mode)
+
+
+def load_vi_page_navigation_bindings() -> KeyBindingsBase:
+    """
+    Key bindings, for scrolling up and down through pages.
+    This are separate bindings, because GNU readline doesn't have them.
+    """
+    key_bindings = KeyBindings()
+    handle = key_bindings.add
+
+    handle("c-f")(scroll_forward)
+    handle("c-b")(scroll_backward)
+    handle("c-d")(scroll_half_page_down)
+    handle("c-u")(scroll_half_page_up)
+    handle("c-e")(scroll_one_line_down)
+    handle("c-y")(scroll_one_line_up)
+    handle("pagedown")(scroll_page_down)
+    handle("pageup")(scroll_page_up)
+
+    return ConditionalKeyBindings(key_bindings, vi_mode)

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/scroll.py

@@ -0,0 +1,187 @@
+"""
+Key bindings, for scrolling up and down through pages.
+
+This are separate bindings, because GNU readline doesn't have them, but
+they are very useful for navigating through long multiline buffers, like in
+Vi, Emacs, etc...
+"""
+from prompt_toolkit.key_binding.key_processor import KeyPressEvent
+
+__all__ = [
+    "scroll_forward",
+    "scroll_backward",
+    "scroll_half_page_up",
+    "scroll_half_page_down",
+    "scroll_one_line_up",
+    "scroll_one_line_down",
+]
+
+E = KeyPressEvent
+
+
+def scroll_forward(event: E, half: bool = False) -> None:
+    """
+    Scroll window down.
+    """
+    w = event.app.layout.current_window
+    b = event.app.current_buffer
+
+    if w and w.render_info:
+        info = w.render_info
+        ui_content = info.ui_content
+
+        # Height to scroll.
+        scroll_height = info.window_height
+        if half:
+            scroll_height //= 2
+
+        # Calculate how many lines is equivalent to that vertical space.
+        y = b.document.cursor_position_row + 1
+        height = 0
+        while y < ui_content.line_count:
+            line_height = info.get_height_for_line(y)
+
+            if height + line_height < scroll_height:
+                height += line_height
+                y += 1
+            else:
+                break
+
+        b.cursor_position = b.document.translate_row_col_to_index(y, 0)
+
+
+def scroll_backward(event: E, half: bool = False) -> None:
+    """
+    Scroll window up.
+    """
+    w = event.app.layout.current_window
+    b = event.app.current_buffer
+
+    if w and w.render_info:
+        info = w.render_info
+
+        # Height to scroll.
+        scroll_height = info.window_height
+        if half:
+            scroll_height //= 2
+
+        # Calculate how many lines is equivalent to that vertical space.
+        y = max(0, b.document.cursor_position_row - 1)
+        height = 0
+        while y > 0:
+            line_height = info.get_height_for_line(y)
+
+            if height + line_height < scroll_height:
+                height += line_height
+                y -= 1
+            else:
+                break
+
+        b.cursor_position = b.document.translate_row_col_to_index(y, 0)
+
+
+def scroll_half_page_down(event: E) -> None:
+    """
+    Same as ControlF, but only scroll half a page.
+    """
+    scroll_forward(event, half=True)
+
+
+def scroll_half_page_up(event: E) -> None:
+    """
+    Same as ControlB, but only scroll half a page.
+    """
+    scroll_backward(event, half=True)
+
+
+def scroll_one_line_down(event: E) -> None:
+    """
+    scroll_offset += 1
+    """
+    w = event.app.layout.current_window
+    b = event.app.current_buffer
+
+    if w:
+        # When the cursor is at the top, move to the next line. (Otherwise, only scroll.)
+        if w.render_info:
+            info = w.render_info
+
+            if w.vertical_scroll < info.content_height - info.window_height:
+                if info.cursor_position.y <= info.configured_scroll_offsets.top:
+                    b.cursor_position += b.document.get_cursor_down_position()
+
+                w.vertical_scroll += 1
+
+
+def scroll_one_line_up(event: E) -> None:
+    """
+    scroll_offset -= 1
+    """
+    w = event.app.layout.current_window
+    b = event.app.current_buffer
+
+    if w:
+        # When the cursor is at the bottom, move to the previous line. (Otherwise, only scroll.)
+        if w.render_info:
+            info = w.render_info
+
+            if w.vertical_scroll > 0:
+                first_line_height = info.get_height_for_line(info.first_visible_line())
+
+                cursor_up = info.cursor_position.y - (
+                    info.window_height
+                    - 1
+                    - first_line_height
+                    - info.configured_scroll_offsets.bottom
+                )
+
+                # Move cursor up, as many steps as the height of the first line.
+                # TODO: not entirely correct yet, in case of line wrapping and many long lines.
+                for _ in range(max(0, cursor_up)):
+                    b.cursor_position += b.document.get_cursor_up_position()
+
+                # Scroll window
+                w.vertical_scroll -= 1
+
+
+def scroll_page_down(event: E) -> None:
+    """
+    Scroll page down. (Prefer the cursor at the top of the page, after scrolling.)
+    """
+    w = event.app.layout.current_window
+    b = event.app.current_buffer
+
+    if w and w.render_info:
+        # Scroll down one page.
+        line_index = max(w.render_info.last_visible_line(), w.vertical_scroll + 1)
+        w.vertical_scroll = line_index
+
+        b.cursor_position = b.document.translate_row_col_to_index(line_index, 0)
+        b.cursor_position += b.document.get_start_of_line_position(
+            after_whitespace=True
+        )
+
+
+def scroll_page_up(event: E) -> None:
+    """
+    Scroll page up. (Prefer the cursor at the bottom of the page, after scrolling.)
+    """
+    w = event.app.layout.current_window
+    b = event.app.current_buffer
+
+    if w and w.render_info:
+        # Put cursor at the first visible line. (But make sure that the cursor
+        # moves at least one line up.)
+        line_index = max(
+            0,
+            min(w.render_info.first_visible_line(), b.document.cursor_position_row - 1),
+        )
+
+        b.cursor_position = b.document.translate_row_col_to_index(line_index, 0)
+        b.cursor_position += b.document.get_start_of_line_position(
+            after_whitespace=True
+        )
+
+        # Set the scroll offset. We can safely set it to zero; the Window will
+        # make sure that it scrolls at least until the cursor becomes visible.
+        w.vertical_scroll = 0

venv/Lib/site-packages/prompt_toolkit/key_binding/bindings/search.py

@@ -0,0 +1,93 @@
+"""
+Search related key bindings.
+"""
+from prompt_toolkit import search
+from prompt_toolkit.application.current import get_app
+from prompt_toolkit.filters import Condition, control_is_searchable, is_searching
+from prompt_toolkit.key_binding.key_processor import KeyPressEvent
+
+from ..key_bindings import key_binding
+
+__all__ = [
+    "abort_search",
+    "accept_search",
+    "start_reverse_incremental_search",
+    "start_forward_incremental_search",
+    "reverse_incremental_search",
+    "forward_incremental_search",
+    "accept_search_and_accept_input",
+]
+
+E = KeyPressEvent
+
+
+@key_binding(filter=is_searching)
+def abort_search(event: E) -> None:
+    """
+    Abort an incremental search and restore the original
+    line.
+    (Usually bound to ControlG/ControlC.)
+    """
+    search.stop_search()
+
+
+@key_binding(filter=is_searching)
+def accept_search(event: E) -> None:
+    """
+    When enter pressed in isearch, quit isearch mode. (Multiline
+    isearch would be too complicated.)
+    (Usually bound to Enter.)
+    """
+    search.accept_search()
+
+
+@key_binding(filter=control_is_searchable)
+def start_reverse_incremental_search(event: E) -> None:
+    """
+    Enter reverse incremental search.
+    (Usually ControlR.)
+    """
+    search.start_search(direction=search.SearchDirection.BACKWARD)
+
+
+@key_binding(filter=control_is_searchable)
+def start_forward_incremental_search(event: E) -> None:
+    """
+    Enter forward incremental search.
+    (Usually ControlS.)
+    """
+    search.start_search(direction=search.SearchDirection.FORWARD)
+
+
+@key_binding(filter=is_searching)
+def reverse_incremental_search(event: E) -> None:
+    """
+    Apply reverse incremental search, but keep search buffer focused.
+    """
+    search.do_incremental_search(search.SearchDirection.BACKWARD, count=event.arg)
+
+
+@key_binding(filter=is_searching)
+def forward_incremental_search(event: E) -> None:
+    """
+    Apply forward incremental search, but keep search buffer focused.
+    """
+    search.do_incremental_search(search.SearchDirection.FORWARD, count=event.arg)
+
+
+@Condition
+def _previous_buffer_is_returnable() -> bool:
+    """
+    True if the previously focused buffer has a return handler.
+    """
+    prev_control = get_app().layout.search_target_buffer_control
+    return bool(prev_control and prev_control.buffer.is_returnable)
+
+
+@key_binding(filter=is_searching & _previous_buffer_is_returnable)
+def accept_search_and_accept_input(event: E) -> None:
+    """
+    Accept the search operation first, then accept the input.
+    """
+    search.accept_search()
+    event.current_buffer.validate_and_handle()