Pasting in Input with an empty string crashes the program

[1j01]

Pressing middle mouse button to paste causes this error in Input._on_paste if the clipboard is empty of text:

╭───────────────────────────────────────────────────────────────────────── Traceback (most recent call last) ─────────────────────────────────────────────────────────────────────────╮
│ /home/io/Projects/textual-paint/.venv/lib/python3.10/site-packages/textual/widgets/_input.py:335 in _on_paste                                                                       │
│                                                                                                                                                                                     │
│   332 │   │   │   event.prevent_default()                                                                                                                                           │
│   333 │                                                                                                                                                                             │
│   334 │   def _on_paste(self, event: events.Paste) -> None:                                                                                                                         │
│ ❱ 335 │   │   line = event.text.splitlines()[0]                                                                                                                                     │
│   336 │   │   self.insert_text_at_cursor(line)                                                                                                                                      │
│   337 │   │   event.stop()                                                                                                                                                          │
│   338                                                                                                                                                                               │
│                                                                                                                                                                                     │
│ ╭──────────────────────────────────────────────────────────── locals ────────────────────────────────────────────────────────────╮                                                  │
│ │ event = Paste(text='')                                                                                                         │                                                  │
│ │  self = CharInput(id='selected_color_char_input', classes={'color_well'}, pseudo_classes={'focus', 'focus-within', 'enabled'}) │                                                  │
│ ╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯                                                  │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
IndexError: list index out of range

To reproduce, use printf "" | xsel before pasting with MMB.

Textual Diagnostics

Versions

Name	Value
Textual	0.22.3
Rich	13.3.5

Python

Name	Value
Version	3.10.6
Implementation	CPython
Compiler	GCC 11.3.0
Executable	/home/io/Projects/textual-paint/.venv/bin/python

Operating System

Name	Value
System	Linux
Release	5.19.0-41-generic
Version	#42~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 18 17:40:00 UTC 2

Terminal

Name	Value
Terminal Application	vscode (1.77.3)
TERM	xterm-256color
COLORTERM	truecolor
FORCE_COLOR	Not set
NO_COLOR	Not set

Rich Console options

Name	Value
size	width=183, height=32
legacy_windows	False
min_width	1
max_width	183
is_terminal	True
encoding	utf-8
max_height	32
justify	None
overflow	None
no_wrap	False
highlight	None
markup	None
height	None

[github-actions]

We found the following entry in the FAQ which you may find helpful:

• Why do some key combinations never make it to my app?

Feel free to close this issue if you found an answer in the FAQ. Otherwise, please give us a little time to review.

This is an automated reply, generated by FAQtory

[rodrigogiraoserrao]

Hey there @1j01, I confirm I can reproduce this issue and we're working on a fix for it.

[github-actions]

Don't forget to star the repository!

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