Import splits multiline history entries as multiple commands

[iloveitaly]

This is documented here but it would be great if there was an option to either (a) omit multiline commands or (b) properly handle them. I may have some time to help with this; mind pointing me in the right direction?

[cantino]

Thanks @iloveitaly, and sorry for the delay. There are probably a few places this needs to be handled:

1. When importing existing history, which means updating the history file parsers in https://github.com/cantino/mcfly/blob/master/src/shell_history.rs
2. When adding a new command to the DB (in mcfly.fish as '$argv[1]' for fish, handled in https://github.com/cantino/mcfly/blob/master/src/settings.rs#L344C40-L347C22 for bash and zsh, and possibly not parsing right until 1 is done above)
3. Displaying in the UI
4. Outputting commands back to the terminal https://github.com/cantino/mcfly/blob/master/src/main.rs#L48