@janpeterd Thanks for your contribution. I am not sure if you have seen this yet, but there is a set of guidelines for first-time contributors.

Regarding your changes, I think it is better to not add the unixwords option at all, and just providing a separate cmd-delete-word-back command should suffice. The relationship between cmd-delete-word-back and and cmd-delete-word should be similar to the relationship between cmd-word-back and cmd-word.

BTW I think the line editing in lf is based on bash, and what you are really trying to do is to implement backward-kill-word (press alt+backspace) in https://www.gnu.org/software/bash/manual/html_node/Commands-For-Killing.html

One other thing I noticed is that you have saved the deleted text in the yank buffer for cmd-delete-word-back, but interestingly cmd-delete-word doesn't do this. I'm not sure which one is correct but I think the behavior should be consistent between these two commands.

@janpeterd Thank you very much for working on this.

@joelim-work I don't remember anything about the missing yank for cmd-delete-word. It is probably a mistake so we should probably fix it. I will try to go over all command-line commands to make sure they have compatible behavior with readline/bash defaults.

@janpeterd I agree with @joelim-work in that unixwords option is not necessary. Support for alt+backspace in lf was added recently. So maybe we can use it for this new cmd-delete-word-back command as this shortcut is mentioned in both bash and readline documentations.

Not quite related to this discussion, but I'm thinking of moving the Contributions wiki page to the repository. I think it is more common to find it in the repository. It is also mostly intended for developers so it should be separate from the content intended for users (i.e. wiki).

I removed the configuration option and mapped the command by default to <a-backspace> and <a-backspace2>. Also bash doesn't save the removed text to the yank-buffer for this command, so I have removed that code. Thanks for bringing that up @joelim-work.

@gokcehan I don't have any issues with moving the contribution guidelines to CONTRIBUTING.md, it sounds good to me.

@joelim-work typo corrected and block of code moved.

Looks good to me as well. Thank you @janpeterd for the patch and @joelim-work for the review.

By the way, both alt+d and alt+backspace save the deleted text in the yank buffer on my bash. I can see these commands are listed under "Killing and Yanking" in man readline, so I think this is the expected behavior. Therefore, I'm thinking of adding yanking to both of these commands in lf as well. Let me know if there is an issue with this.