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"""
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Module to define and register Terminal IPython shortcuts with
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:mod:`prompt_toolkit`
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"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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import warnings
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import signal
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import sys
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import re
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import os
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from typing import Callable
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from prompt_toolkit.application.current import get_app
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from prompt_toolkit.enums import DEFAULT_BUFFER, SEARCH_BUFFER
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from prompt_toolkit.filters import (has_focus, has_selection, Condition,
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vi_insert_mode, emacs_insert_mode, has_completions, vi_mode)
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from prompt_toolkit.key_binding.bindings.completion import display_completions_like_readline
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from prompt_toolkit.key_binding import KeyBindings
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from prompt_toolkit.key_binding.bindings import named_commands as nc
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from prompt_toolkit.key_binding.vi_state import InputMode, ViState
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from IPython.utils.decorators import undoc
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@undoc
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@Condition
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def cursor_in_leading_ws():
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before = get_app().current_buffer.document.current_line_before_cursor
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return (not before) or before.isspace()
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# Needed for to accept autosuggestions in vi insert mode
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def _apply_autosuggest(event):
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"""
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Apply autosuggestion if at end of line.
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"""
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b = event.current_buffer
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d = b.document
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after_cursor = d.text[d.cursor_position :]
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lines = after_cursor.split("\n")
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end_of_current_line = lines[0].strip()
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suggestion = b.suggestion
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if (suggestion is not None) and (suggestion.text) and (end_of_current_line == ""):
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b.insert_text(suggestion.text)
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else:
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nc.end_of_line(event)
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def create_ipython_shortcuts(shell):
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"""Set up the prompt_toolkit keyboard shortcuts for IPython"""
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kb = KeyBindings()
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insert_mode = vi_insert_mode | emacs_insert_mode
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if getattr(shell, 'handle_return', None):
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return_handler = shell.handle_return(shell)
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else:
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return_handler = newline_or_execute_outer(shell)
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kb.add('enter', filter=(has_focus(DEFAULT_BUFFER)
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& ~has_selection
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& insert_mode
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))(return_handler)
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def reformat_and_execute(event):
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reformat_text_before_cursor(event.current_buffer, event.current_buffer.document, shell)
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event.current_buffer.validate_and_handle()
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@Condition
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def ebivim():
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return shell.emacs_bindings_in_vi_insert_mode
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kb.add(
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"escape",
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"enter",
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filter=(has_focus(DEFAULT_BUFFER) & ~has_selection & insert_mode & ebivim),
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)(reformat_and_execute)
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kb.add("c-\\")(quit)
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kb.add('c-p', filter=(vi_insert_mode & has_focus(DEFAULT_BUFFER))
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)(previous_history_or_previous_completion)
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kb.add('c-n', filter=(vi_insert_mode & has_focus(DEFAULT_BUFFER))
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)(next_history_or_next_completion)
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kb.add('c-g', filter=(has_focus(DEFAULT_BUFFER) & has_completions)
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)(dismiss_completion)
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kb.add('c-c', filter=has_focus(DEFAULT_BUFFER))(reset_buffer)
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kb.add('c-c', filter=has_focus(SEARCH_BUFFER))(reset_search_buffer)
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supports_suspend = Condition(lambda: hasattr(signal, 'SIGTSTP'))
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kb.add('c-z', filter=supports_suspend)(suspend_to_bg)
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# Ctrl+I == Tab
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kb.add('tab', filter=(has_focus(DEFAULT_BUFFER)
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& ~has_selection
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& insert_mode
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& cursor_in_leading_ws
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))(indent_buffer)
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kb.add('c-o', filter=(has_focus(DEFAULT_BUFFER) & emacs_insert_mode)
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)(newline_autoindent_outer(shell.input_transformer_manager))
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kb.add('f2', filter=has_focus(DEFAULT_BUFFER))(open_input_in_editor)
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@Condition
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def auto_match():
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return shell.auto_match
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def all_quotes_paired(quote, buf):
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paired = True
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i = 0
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while i < len(buf):
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c = buf[i]
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if c == quote:
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paired = not paired
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elif c == "\\":
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i += 1
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i += 1
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return paired
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focused_insert = (vi_insert_mode | emacs_insert_mode) & has_focus(DEFAULT_BUFFER)
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_preceding_text_cache = {}
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_following_text_cache = {}
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def preceding_text(pattern):
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if pattern in _preceding_text_cache:
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return _preceding_text_cache[pattern]
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if callable(pattern):
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def _preceding_text():
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app = get_app()
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before_cursor = app.current_buffer.document.current_line_before_cursor
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return bool(pattern(before_cursor))
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else:
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m = re.compile(pattern)
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def _preceding_text():
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app = get_app()
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before_cursor = app.current_buffer.document.current_line_before_cursor
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return bool(m.match(before_cursor))
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condition = Condition(_preceding_text)
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_preceding_text_cache[pattern] = condition
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return condition
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def following_text(pattern):
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try:
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return _following_text_cache[pattern]
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except KeyError:
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pass
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m = re.compile(pattern)
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def _following_text():
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app = get_app()
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return bool(m.match(app.current_buffer.document.current_line_after_cursor))
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condition = Condition(_following_text)
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_following_text_cache[pattern] = condition
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return condition
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@Condition
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def not_inside_unclosed_string():
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app = get_app()
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s = app.current_buffer.document.text_before_cursor
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# remove escaped quotes
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s = s.replace('\\"', "").replace("\\'", "")
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# remove triple-quoted string literals
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s = re.sub(r"(?:\"\"\"[\s\S]*\"\"\"|'''[\s\S]*''')", "", s)
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# remove single-quoted string literals
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s = re.sub(r"""(?:"[^"]*["\n]|'[^']*['\n])""", "", s)
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return not ('"' in s or "'" in s)
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# auto match
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@kb.add("(", filter=focused_insert & auto_match & following_text(r"[,)}\]]|$"))
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def _(event):
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event.current_buffer.insert_text("()")
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event.current_buffer.cursor_left()
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@kb.add("[", filter=focused_insert & auto_match & following_text(r"[,)}\]]|$"))
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def _(event):
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event.current_buffer.insert_text("[]")
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event.current_buffer.cursor_left()
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@kb.add("{", filter=focused_insert & auto_match & following_text(r"[,)}\]]|$"))
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def _(event):
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event.current_buffer.insert_text("{}")
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event.current_buffer.cursor_left()
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@kb.add(
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'"',
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filter=focused_insert
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& auto_match
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& not_inside_unclosed_string
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& preceding_text(lambda line: all_quotes_paired('"', line))
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& following_text(r"[,)}\]]|$"),
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)
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def _(event):
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event.current_buffer.insert_text('""')
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event.current_buffer.cursor_left()
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@kb.add(
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"'",
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filter=focused_insert
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& auto_match
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& not_inside_unclosed_string
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& preceding_text(lambda line: all_quotes_paired("'", line))
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& following_text(r"[,)}\]]|$"),
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)
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def _(event):
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event.current_buffer.insert_text("''")
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event.current_buffer.cursor_left()
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@kb.add(
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'"',
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filter=focused_insert
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& auto_match
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& not_inside_unclosed_string
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& preceding_text(r'^.*""$'),
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)
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def _(event):
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event.current_buffer.insert_text('""""')
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event.current_buffer.cursor_left(3)
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@kb.add(
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"'",
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filter=focused_insert
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& auto_match
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& not_inside_unclosed_string
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& preceding_text(r"^.*''$"),
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)
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def _(event):
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event.current_buffer.insert_text("''''")
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event.current_buffer.cursor_left(3)
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# raw string
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@kb.add(
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"(", filter=focused_insert & auto_match & preceding_text(r".*(r|R)[\"'](-*)$")
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)
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def _(event):
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matches = re.match(
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r".*(r|R)[\"'](-*)",
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event.current_buffer.document.current_line_before_cursor,
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)
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dashes = matches.group(2) or ""
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event.current_buffer.insert_text("()" + dashes)
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event.current_buffer.cursor_left(len(dashes) + 1)
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@kb.add(
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"[", filter=focused_insert & auto_match & preceding_text(r".*(r|R)[\"'](-*)$")
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)
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def _(event):
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matches = re.match(
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r".*(r|R)[\"'](-*)",
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event.current_buffer.document.current_line_before_cursor,
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)
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dashes = matches.group(2) or ""
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event.current_buffer.insert_text("[]" + dashes)
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event.current_buffer.cursor_left(len(dashes) + 1)
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@kb.add(
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"{", filter=focused_insert & auto_match & preceding_text(r".*(r|R)[\"'](-*)$")
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)
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def _(event):
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matches = re.match(
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r".*(r|R)[\"'](-*)",
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event.current_buffer.document.current_line_before_cursor,
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)
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dashes = matches.group(2) or ""
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event.current_buffer.insert_text("{}" + dashes)
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event.current_buffer.cursor_left(len(dashes) + 1)
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# just move cursor
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@kb.add(")", filter=focused_insert & auto_match & following_text(r"^\)"))
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@kb.add("]", filter=focused_insert & auto_match & following_text(r"^\]"))
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@kb.add("}", filter=focused_insert & auto_match & following_text(r"^\}"))
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@kb.add('"', filter=focused_insert & auto_match & following_text('^"'))
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@kb.add("'", filter=focused_insert & auto_match & following_text("^'"))
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def _(event):
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event.current_buffer.cursor_right()
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@kb.add(
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"backspace",
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filter=focused_insert
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& preceding_text(r".*\($")
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& auto_match
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& following_text(r"^\)"),
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)
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@kb.add(
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"backspace",
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filter=focused_insert
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& preceding_text(r".*\[$")
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& auto_match
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& following_text(r"^\]"),
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)
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@kb.add(
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"backspace",
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filter=focused_insert
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& preceding_text(r".*\{$")
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& auto_match
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& following_text(r"^\}"),
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)
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@kb.add(
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"backspace",
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filter=focused_insert
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& preceding_text('.*"$')
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& auto_match
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& following_text('^"'),
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)
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@kb.add(
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"backspace",
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filter=focused_insert
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& preceding_text(r".*'$")
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& auto_match
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& following_text(r"^'"),
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)
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def _(event):
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event.current_buffer.delete()
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event.current_buffer.delete_before_cursor()
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if shell.display_completions == "readlinelike":
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kb.add(
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"c-i",
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filter=(
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has_focus(DEFAULT_BUFFER)
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& ~has_selection
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& insert_mode
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& ~cursor_in_leading_ws
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),
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)(display_completions_like_readline)
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if sys.platform == "win32":
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kb.add("c-v", filter=(has_focus(DEFAULT_BUFFER) & ~vi_mode))(win_paste)
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focused_insert_vi = has_focus(DEFAULT_BUFFER) & vi_insert_mode
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@kb.add("end", filter=has_focus(DEFAULT_BUFFER) & (ebivim | ~vi_insert_mode))
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def _(event):
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_apply_autosuggest(event)
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@kb.add("c-e", filter=focused_insert_vi & ebivim)
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def _(event):
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_apply_autosuggest(event)
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@kb.add("c-f", filter=focused_insert_vi)
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def _(event):
|
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b = event.current_buffer
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suggestion = b.suggestion
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if suggestion:
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b.insert_text(suggestion.text)
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else:
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nc.forward_char(event)
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@kb.add("escape", "f", filter=focused_insert_vi & ebivim)
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def _(event):
|
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b = event.current_buffer
|
|
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suggestion = b.suggestion
|
|
|
if suggestion:
|
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t = re.split(r"(\S+\s+)", suggestion.text)
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b.insert_text(next((x for x in t if x), ""))
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else:
|
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nc.forward_word(event)
|
|
|
|
|
|
# Simple Control keybindings
|
|
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key_cmd_dict = {
|
|
|
"c-a": nc.beginning_of_line,
|
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|
"c-b": nc.backward_char,
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|
"c-k": nc.kill_line,
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|
"c-w": nc.backward_kill_word,
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|
"c-y": nc.yank,
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|
"c-_": nc.undo,
|
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|
}
|
|
|
|
|
|
for key, cmd in key_cmd_dict.items():
|
|
|
kb.add(key, filter=focused_insert_vi & ebivim)(cmd)
|
|
|
|
|
|
# Alt and Combo Control keybindings
|
|
|
keys_cmd_dict = {
|
|
|
# Control Combos
|
|
|
("c-x", "c-e"): nc.edit_and_execute,
|
|
|
("c-x", "e"): nc.edit_and_execute,
|
|
|
# Alt
|
|
|
("escape", "b"): nc.backward_word,
|
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|
("escape", "c"): nc.capitalize_word,
|
|
|
("escape", "d"): nc.kill_word,
|
|
|
("escape", "h"): nc.backward_kill_word,
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|
|
("escape", "l"): nc.downcase_word,
|
|
|
("escape", "u"): nc.uppercase_word,
|
|
|
("escape", "y"): nc.yank_pop,
|
|
|
("escape", "."): nc.yank_last_arg,
|
|
|
}
|
|
|
|
|
|
for keys, cmd in keys_cmd_dict.items():
|
|
|
kb.add(*keys, filter=focused_insert_vi & ebivim)(cmd)
|
|
|
|
|
|
def get_input_mode(self):
|
|
|
app = get_app()
|
|
|
app.ttimeoutlen = shell.ttimeoutlen
|
|
|
app.timeoutlen = shell.timeoutlen
|
|
|
|
|
|
return self._input_mode
|
|
|
|
|
|
def set_input_mode(self, mode):
|
|
|
shape = {InputMode.NAVIGATION: 2, InputMode.REPLACE: 4}.get(mode, 6)
|
|
|
cursor = "\x1b[{} q".format(shape)
|
|
|
|
|
|
sys.stdout.write(cursor)
|
|
|
sys.stdout.flush()
|
|
|
|
|
|
self._input_mode = mode
|
|
|
|
|
|
if shell.editing_mode == "vi" and shell.modal_cursor:
|
|
|
ViState._input_mode = InputMode.INSERT
|
|
|
ViState.input_mode = property(get_input_mode, set_input_mode)
|
|
|
|
|
|
return kb
|
|
|
|
|
|
|
|
|
def reformat_text_before_cursor(buffer, document, shell):
|
|
|
text = buffer.delete_before_cursor(len(document.text[:document.cursor_position]))
|
|
|
try:
|
|
|
formatted_text = shell.reformat_handler(text)
|
|
|
buffer.insert_text(formatted_text)
|
|
|
except Exception as e:
|
|
|
buffer.insert_text(text)
|
|
|
|
|
|
|
|
|
def newline_or_execute_outer(shell):
|
|
|
|
|
|
def newline_or_execute(event):
|
|
|
"""When the user presses return, insert a newline or execute the code."""
|
|
|
b = event.current_buffer
|
|
|
d = b.document
|
|
|
|
|
|
if b.complete_state:
|
|
|
cc = b.complete_state.current_completion
|
|
|
if cc:
|
|
|
b.apply_completion(cc)
|
|
|
else:
|
|
|
b.cancel_completion()
|
|
|
return
|
|
|
|
|
|
# If there's only one line, treat it as if the cursor is at the end.
|
|
|
# See https://github.com/ipython/ipython/issues/10425
|
|
|
if d.line_count == 1:
|
|
|
check_text = d.text
|
|
|
else:
|
|
|
check_text = d.text[:d.cursor_position]
|
|
|
status, indent = shell.check_complete(check_text)
|
|
|
|
|
|
# if all we have after the cursor is whitespace: reformat current text
|
|
|
# before cursor
|
|
|
after_cursor = d.text[d.cursor_position:]
|
|
|
reformatted = False
|
|
|
if not after_cursor.strip():
|
|
|
reformat_text_before_cursor(b, d, shell)
|
|
|
reformatted = True
|
|
|
if not (d.on_last_line or
|
|
|
d.cursor_position_row >= d.line_count - d.empty_line_count_at_the_end()
|
|
|
):
|
|
|
if shell.autoindent:
|
|
|
b.insert_text('\n' + indent)
|
|
|
else:
|
|
|
b.insert_text('\n')
|
|
|
return
|
|
|
|
|
|
if (status != 'incomplete') and b.accept_handler:
|
|
|
if not reformatted:
|
|
|
reformat_text_before_cursor(b, d, shell)
|
|
|
b.validate_and_handle()
|
|
|
else:
|
|
|
if shell.autoindent:
|
|
|
b.insert_text('\n' + indent)
|
|
|
else:
|
|
|
b.insert_text('\n')
|
|
|
return newline_or_execute
|
|
|
|
|
|
|
|
|
def previous_history_or_previous_completion(event):
|
|
|
"""
|
|
|
Control-P in vi edit mode on readline is history next, unlike default prompt toolkit.
|
|
|
|
|
|
If completer is open this still select previous completion.
|
|
|
"""
|
|
|
event.current_buffer.auto_up()
|
|
|
|
|
|
|
|
|
def next_history_or_next_completion(event):
|
|
|
"""
|
|
|
Control-N in vi edit mode on readline is history previous, unlike default prompt toolkit.
|
|
|
|
|
|
If completer is open this still select next completion.
|
|
|
"""
|
|
|
event.current_buffer.auto_down()
|
|
|
|
|
|
|
|
|
def dismiss_completion(event):
|
|
|
b = event.current_buffer
|
|
|
if b.complete_state:
|
|
|
b.cancel_completion()
|
|
|
|
|
|
|
|
|
def reset_buffer(event):
|
|
|
b = event.current_buffer
|
|
|
if b.complete_state:
|
|
|
b.cancel_completion()
|
|
|
else:
|
|
|
b.reset()
|
|
|
|
|
|
|
|
|
def reset_search_buffer(event):
|
|
|
if event.current_buffer.document.text:
|
|
|
event.current_buffer.reset()
|
|
|
else:
|
|
|
event.app.layout.focus(DEFAULT_BUFFER)
|
|
|
|
|
|
def suspend_to_bg(event):
|
|
|
event.app.suspend_to_background()
|
|
|
|
|
|
def quit(event):
|
|
|
"""
|
|
|
On platforms that support SIGQUIT, send SIGQUIT to the current process.
|
|
|
On other platforms, just exit the process with a message.
|
|
|
"""
|
|
|
sigquit = getattr(signal, "SIGQUIT", None)
|
|
|
if sigquit is not None:
|
|
|
os.kill(0, signal.SIGQUIT)
|
|
|
else:
|
|
|
sys.exit("Quit")
|
|
|
|
|
|
def indent_buffer(event):
|
|
|
event.current_buffer.insert_text(' ' * 4)
|
|
|
|
|
|
@undoc
|
|
|
def newline_with_copy_margin(event):
|
|
|
"""
|
|
|
DEPRECATED since IPython 6.0
|
|
|
|
|
|
See :any:`newline_autoindent_outer` for a replacement.
|
|
|
|
|
|
Preserve margin and cursor position when using
|
|
|
Control-O to insert a newline in EMACS mode
|
|
|
"""
|
|
|
warnings.warn("`newline_with_copy_margin(event)` is deprecated since IPython 6.0. "
|
|
|
"see `newline_autoindent_outer(shell)(event)` for a replacement.",
|
|
|
DeprecationWarning, stacklevel=2)
|
|
|
|
|
|
b = event.current_buffer
|
|
|
cursor_start_pos = b.document.cursor_position_col
|
|
|
b.newline(copy_margin=True)
|
|
|
b.cursor_up(count=1)
|
|
|
cursor_end_pos = b.document.cursor_position_col
|
|
|
if cursor_start_pos != cursor_end_pos:
|
|
|
pos_diff = cursor_start_pos - cursor_end_pos
|
|
|
b.cursor_right(count=pos_diff)
|
|
|
|
|
|
def newline_autoindent_outer(inputsplitter) -> Callable[..., None]:
|
|
|
"""
|
|
|
Return a function suitable for inserting a indented newline after the cursor.
|
|
|
|
|
|
Fancier version of deprecated ``newline_with_copy_margin`` which should
|
|
|
compute the correct indentation of the inserted line. That is to say, indent
|
|
|
by 4 extra space after a function definition, class definition, context
|
|
|
manager... And dedent by 4 space after ``pass``, ``return``, ``raise ...``.
|
|
|
"""
|
|
|
|
|
|
def newline_autoindent(event):
|
|
|
"""insert a newline after the cursor indented appropriately."""
|
|
|
b = event.current_buffer
|
|
|
d = b.document
|
|
|
|
|
|
if b.complete_state:
|
|
|
b.cancel_completion()
|
|
|
text = d.text[:d.cursor_position] + '\n'
|
|
|
_, indent = inputsplitter.check_complete(text)
|
|
|
b.insert_text('\n' + (' ' * (indent or 0)), move_cursor=False)
|
|
|
|
|
|
return newline_autoindent
|
|
|
|
|
|
|
|
|
def open_input_in_editor(event):
|
|
|
event.app.current_buffer.open_in_editor()
|
|
|
|
|
|
|
|
|
if sys.platform == 'win32':
|
|
|
from IPython.core.error import TryNext
|
|
|
from IPython.lib.clipboard import (ClipboardEmpty,
|
|
|
win32_clipboard_get,
|
|
|
tkinter_clipboard_get)
|
|
|
|
|
|
@undoc
|
|
|
def win_paste(event):
|
|
|
try:
|
|
|
text = win32_clipboard_get()
|
|
|
except TryNext:
|
|
|
try:
|
|
|
text = tkinter_clipboard_get()
|
|
|
except (TryNext, ClipboardEmpty):
|
|
|
return
|
|
|
except ClipboardEmpty:
|
|
|
return
|
|
|
event.current_buffer.insert_text(text.replace("\t", " " * 4))
|
|
|
|