pub fn issue_number(pr: &PullRequest) -> Option<u64>Expand description
The issue of a pull request: the issue of its first link line, or of
its Issue: trailer. hygiene pr reads this issue.
use hygiene::PullRequest;
let pr = PullRequest::new("T", "Refs #9\n\nIssue: #9\nMilestone: Wave 3", None);
assert_eq!(hygiene::issue_number(&pr), Some(9));
assert_eq!(hygiene::issue_number(&PullRequest::new("T", "Text.", None)), None);