You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: wrap.go
    path of file: ./repos/triangle/vendor/github.com/fogleman/gg
    
    the code of the file until where you have to start completion: package gg

import (
	"strings"
	"unicode"
)

type measureStringer interface {
	MeasureString(s string) (w, h float64)
}

func splitOnSpace(x string) []string {
	var result []string
	pi := 0
	ps := false
	for i, c := range x {
		s := unicode.IsSpace(c)
		if s != ps && i > 0 {
			result = append(result, x[pi:i])
			pi = i
		}
		ps = s
	}
	result = append(result, x[pi:])
	return result
}

func wordWrap(m measureStringer, s string, width float64) []string {
	var result []string
	for _, line := range strings.Split(s, "\n") {
		fields := sp
    
func wordWrap(m measureStringer, s string, width float64) []string {
	var result []string
	for _, line := range strings.Split(s, "\n") {
		fields := splitOnSpace(line)
		if len(fields)%2 == 1 {
			fields = append(fields, "")
		}
		x := ""
		for i := 0; i < len(fields); i += 2 {
			w, _ := m.MeasureString(x + fields[i])
			if w > width {
				if x == "" {
					result = append(result, fields[i])
					x = ""
					continue
				} else {
					result = append(result, x)
					x = ""
				}
			}
			x += fields[i] + fields[i+1]
		}
		if x != "" {
			result = append(result, x)
		}
	}
	for i, line := range result {
		result[i] = strings.TrimSpace(line)
	}
	return result
}