package cellbuf import ( "strings" ) // Height returns the height of a string. func Height(s string) int { return strings.Count(s, "\n") + 1 } func clamp(v, low, high int) int { if high < low { low, high = high, low } return min(high, max(low, v)) } func abs(a int) int { if a < 0 { return -a } return a }