Paste from clipboard on REPL may lose the input #6017
Description
Since it is about REPL mode, it may not be so important.
Summary
There is an issue where source code from the clipboard doesn't paste properly into the REPL shell. I tested this by copying and pasting the string below. Please refer to the content in the attached Actual section below.
# From https://github.com/RustPython/RustPython/issues/5715#issuecomment-3035167400
# Copy only following lines.
print("Hello, RustPython!")
a = 10
b = 20
result = a + b
print(f"10 + 20 = {result}")
name = "RustPython"
print(f"Welcome to {name}")
numbers = [1, 2, 3, 4, 5]
print(f"Numbers: {numbers}")
print(f"Sum: {sum(numbers)}")
Personally, I wasn't able to easily identify the cause of this issue. It appears that the behavior differs depending on the terminal. When pasting in VSCode, it seems like everything gets entered (although it may be truncated), but when pasting in Ghostty, nothing after the arbtrary line gets entered.
I suspect this problem occurs because rustyline doesn't handle stdin buffer management or similar processing.
Expected
Maybe, there is no expectation for REPL implementation but I leave CPython's case.
>>> print("Hello, RustPython!")
...
... a = 10
... b = 20
... result = a + b
... print(f"10 + 20 = {result}")
...
... name = "RustPython"
... print(f"Welcome to {name}")
...
... numbers = [1, 2, 3, 4, 5]
... print(f"Numbers: {numbers}")
... print(f"Sum: {sum(numbers)}")
...
Hello, RustPython!
10 + 20 = 30
Welcome to RustPython
Numbers: [1, 2, 3, 4, 5]
Sum: 15
>>>Actual
VSCode + RustPython
Welcome to the magnificent Rust Python 0.4.0 interpreter 😱 🖖
RustPython 3.13.0
Type "help", "copyright", "credits" or "license" for more information.
>>>>> print("Hello, RustPython!")
Hello, RustPython!
>>>>> = a + b
File "<stdin>", line 1
= a + b
^
SyntaxError: expected a statement
>>>>> Python"
File "<stdin>", line 1
Python"
^
SyntaxError: missing closing quote in string literal
>>>>> 2, 3, 4, 5]
File "<stdin>", line 1
2, 3, 4, 5]
IndentationError: unexpected indentation
>>>>> Sum: {sum(numbers)}")
File "<stdin>", line 1
Sum: {sum(numbers)}")
^
SyntaxError: missing closing quote in string literal
>>>>>Ghostty + RustPython
Welcome to the magnificent Rust Python 0.4.0 interpreter 😱 🖖
RustPython 3.13.0
Type "help", "copyright", "credits" or "license" for more information.
>>>>> print("Hello, RustPython!")
f"10 + 20 = {result}")
name = "RustPython"
print(f"Welcome to {name}")
numbers = [1, 2, 3, 4, 5]
print(f"Numbers: {numbers}")
print(f"Sum: {sum(numbers)}")Hello, RustPython!
>>>>> f"10 + 20 = {result}")
File "<stdin>", line 1
f"10 + 20 = {result}")
^
SyntaxError: expected a statement
>>>>>