Allows you to execute heredocs like so:
$ cat <<'EOF'
this is a heredoc
$foo
EOF
It will trim the whitespace, so that the EOF marker is reconized. It will also make it so that all lines until EOF file are captured when you "execute" the first line.
Note: For now it only supports <<EOF
. No other tokens.
.
├── README.md
└── autoload
└── plum
└── heredoc.vim