New Python REPL double-prints completion suggestions

Bug report

Bug description:

If a keyboard interrupt is given while TAB autocomplete suggestions are being displayed, they are re-printed also below the last line, and continue to be re-printed as long as new keyboard interrupts are given.

after the keystrokes int.<TAB><TAB>

int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>> int.

then <CTRL-C>

int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>> int.
KeyboardInterrupt
int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>>

another <CTRL-C>

int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>> int.
KeyboardInterrupt
int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>>
KeyboardInterrupt
int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>>

<ENTER> makes the last set of printed suggestions disappear, as does typing any printing characters.

int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>> int.
KeyboardInterrupt
int.as_integer_ratio(  int.bit_length(        int.denominator        int.imag               int.mro()              int.real
int.bit_count(         int.conjugate(         int.from_bytes(        int.is_integer(        int.numerator          int.to_bytes(
>>>
KeyboardInterrupt
>>>
>>>

CPython versions tested on:

3.14

Operating systems tested on:

macOS

Linked PRs

• gh-128442
• gh-128467

Reproduza o problema no REPL do Python 3.14 com int.<TAB><TAB> seguido de pressionamentos repetidos de Ctrl-C e, em seguida, inspecione os PRs vinculados gh-128442 e gh-128467 para entender o contexto atual da implementação. Está concluído quando as sugestões de conclusão interrompidas não são impressas novamente e a entrada normal ou Enter continua a limpá-las conforme descrito.