Crash in Menu

[Philippe Bordron]

Describe the bug
Hitting backspace twice in menu makes ox crash

To Reproduce

• Launch ox

ox

• Hit backspace twice
• ox crash with following error:

 ~  thread 'main' panicked at 'index out of bounds: the len is 0 but the index is 0', src/document.rs:385:21                                                    
 ~                                                                                                          note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace                                                                                                                                       
 ~                       Abandon (core dumped)  

Expected behavior
No crash

Desktop (please complete the following information):

• Manjaro linux with ox-git r272.bb9184b-1 from AUR
• CentOS 7.8.2003 + ox v0.2.6 built with rust 1.46

[Philippe Bordron]

I just saw duplicate entry here #63

[Luke]

Thanks for the comprehensive report anyway :) this fix will be in 0.2.7 which hopefully will be out soon.