# Open the GitHub repository in the browser.
local url=$(
  git config -l \
    | grep "remote.origin.url" \
    | sed -En "s/remote.origin.url=(git|https?)(@|:\/\/)github.com(:|\/)(.+)\/(.+).git/https:\/\/github.com\/\4\/\5/p"
)

if [[ -n "$url" ]]; then
  url="${url}/tree/${$(git-branch):-master}"

  if (( $+commands[$BROWSER] )); then
    "$BROWSER" "$url"
    return 0
  else
    print "fatal: Browser not set or set to a non-existent browser." >&2
    return 1
  fi
else
  print "fatal: Not a Git repository or origin remote not set." >&2
  return 1
fi