Using libedit/editline, and trying to figure out a good way to do multiline input/editing. The target is an SQL client, where queries will often span multiple lines and terminate with ;.
I can call el_gets, and process each line of input, stopping when I see the terminating ;. I can even concatenate those and store them as a single entry in el_history - and it will correctly access them when using the arrows to scroll through history.
However, when entering the command and after starting a new line, I can no longer use the arrows to move up and edit the previous line. E.g.:
prompt> SELECT * FROM table
WHERE
At that point, I'd like to be able to use the up-arrow, to move up and edit the text already entered on the first line. Is this possible? How would one do so? I assume that using el_gets isn't correct in this case, since it would remove the line from the editline buffering, yet I don't see an alternative API that would work.
Thoughts?