Find lines not starting with " in Notepad++

Question

I try to verify a CSV file where we had problems with line breaks.

I want to find all lines not starting with a \".

I am trying with /!^\"

Answer 1

Step 1 - Match lines. Find dialog > Mark tab, you can bookmark lines that match.

Step 2 - Remove lines bookmarked OR Remove lines not bookmarked. Search > Bookmark > Remove Unmarked Lines or Remove Bookmarked lines