部分unescape html字符串

Question

I have webapp. Go html template will escape all unsafe tag. Is there way to selectively escape a string? For instance, Google.com will highlight your search query and wrap it with <em> tag while all other html & javascript gets escaped. I have this:

package main

import (
    "fmt"
    "html/template"
)

func main() {
    s := "<i>This should be escaped</i><strong>This should be in bold</strong>."
    h := template.HTMLEscaper(s)
    fmt.Println(h)
}

Right now everything gets escaped. I am aware you can do a template function with template.HTML(mystring) but how do I do that for part of a string?

thx!

EDIT: I would like the final string to be:

&lt;i&gt;This should be escaped&lt;/i&gt;<strong>This should be in bold</strong>.

To be clear, I have tried creating a template function to highlight matches...the html I add gets escaped in the actual template ;(