strings.Diff

以统一差异格式返回两段文本 OLD 与 NEW 的带锚点差异；两者完全相同时返回空字符串。

签名: strings.Diff OLDNAME OLD NEWNAME NEW
返回类型: string

用 strings.Diff 比较两段字符串并渲染出带高亮的差异：

{{ $want := `
<p>The product of 6 and 7 is 42.</p>
<p>The product of 7 and 6 is 42.</p>
`}}

{{ $got := `
<p>The product of 6 and 7 is 42.</p>
<p>The product of 7 and 6 is 13.</p>
`}}

{{ $diff := strings.Diff "want" $want "got" $got }}
{{ transform.Highlight $diff "diff" }}

渲染结果：

界面截图