messy.R
In formatR: Format R Code Automatically

    # a single line of comments is preserved
1+1

if(TRUE){
x=1  # inline comments
}else{
x=2;print('Oh no... ask the right bracket to go away!')}
1*3 # one space before this comment will become two!
2+2+2    # 'short comments'

# only 'single quotes' are allowed in comments
df=data.frame(y=rnorm(100),x1=rnorm(100),x2=rnorm(100))
lm(y~x1+x2, data=df)
1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1  ## comments after a long line

## here is a long long long long long long long long long long long long long long long long long long long long comment