in convert.go [343:377]
func wrapText(s string, l int, prefix string) string {
// Basic text wrapping of s at spaces to fit in l
var ret string
s = strings.TrimSpace(s)
for len(s) > l {
// Try to split on space
suffix := ""
pos := strings.LastIndex(s[:l], " ")
if pos < 0 {
pos = l - 1
suffix = "-\n"
}
if len(ret) != 0 {
ret += "\n" + prefix
}
ret += strings.TrimSpace(s[:pos]) + suffix
s = strings.TrimSpace(s[pos:])
}
if len(s) > 0 {
if len(ret) != 0 {
ret += "\n" + prefix
}
return ret + s
}
return ret
}