Replace # with _ for lua

[minamorl]

Hi, I'm using neovim with lua and since there' s no way to represent # in lua I just replaced it with underscore.

[ryicoh]

@minamorl Thank you for posting the PR.

In lua, you can use '#' in a variable name, such as vim.g['deepl#endpoint’].

[minamorl]

Hi. First I like this plugin really!
IMHO it'd be better to have documented or replace it with underscore since it's de facto way to represent variable in recent nvim plugins.

[ryicoh]

@minamorl

I agree with you.
But I'm concerned that the change will become a breaking change.
It means that it will affect users who are already configured in deepl#....

Do you have any ideas to avoid this?

[minamorl]

@ryicoh Ah OK I got the point. So it would be better to check both old deepl#endpoint and new deepl_endpoint if you wanna leave them for backward compatibility.