I’m trying to extract the last tags from markdown

const doc = `
# Section title 1

body 1

#t1 #t2
`

const re = /^([sS]*?)nn((#[a-z][a-zd]*s*)+)$/gi

console.log(re.exec(doc))

But the result is somewhat unexpected

[ 
  "n# Section title 1nnbody 1nn#t1 #t2n", 
  "n# Section title 1nnbody 1", 
  "#t1 #t2n", 
  "#t2n"
]

I would expect it to be

[ 
  "n# Section title 1nnbody 1nn#t1 #t2n", 
  "n# Section title 1nnbody 1", 
  "#t1 #t2n"
]

P.S. I need the g modifier, I don’t want to threat n specially, the text should be interpreted as a stream of chars, not lines.