First, English isn't my first language.
However I thought I know the difference and when to use 'to' and when 'too'.
In a book I currently read, the authors consistently use 'too' where I thought it has to be 'to'.
Here is an example:
Maybe it was time to let the guards do their job. Only step in when I have too. When I'm actually needed.
Quinn, Montgomery. The Beast: Trolling In Paradise: Book 1 (English Edition) (S.160). Kindle-Version.
Obviously it's 'to' when the sentence is a bit longer:
"Only step in when I have to do it."
Or: "Only step in when I have to step in."
Do I miss something here or do the authors misuse 'too'?
HM.