Select to suit, Search, Replace \r\n with ‘space’ (using Extended).
Notepad ++ puts a carriage return and a line feed at the end of each line (automatically when Enter is pressed). These can be displayed if Show All Characters is toggled (the pilcrow – ‘¶’, like a reversed P) and in Extended Mode accessed with \r for *r*eturn and \n for *n*ew line. To substitute these two control codes with a space just place them in Find what : and hit Space in Replace with ::
