So, I was trying to convert an orgmode file to html. There is an orgmode-export-as-html function, but it was choking on something, so I needed to do the conversion by hand. I tried many, many times to convert the file with emacs regular expressions, but was unsuccessful.
I have a large mysqldump backup file of all databases on a server but I need a sql backup for a single database. So I wanted to break up the dump file into smaller pieces. This is one solution I came up with using vim.