func of count runes of string

[yingzhuo]

I do know this is NOT a bug of frep itself.

template :

{{ len "中文" }}

if i run frep like this:

frep /path/to/template --dryrun

i got :

6

So, I think chines users need a new func.

How about:

func CountRune(s string) int {
    return len([]rune(s))
}

and register is:

funcMap := template.FuncMap() {
    "countRune": CountRune,
    // other funcs
}

[yingzhuo]

Another func:

func Join(separator string, value []interface{}) string {
	defer func() {
		recover()
	}()

	sb := &strings.Builder{}
	for i, v := range value {
		_, _ = fmt.Fprintf(sb, "%v", v)
		if i != len(value)-1 {
			_, _ = fmt.Fprintf(sb, separator)
		}
	}
	return sb.String()
}

I can user it like this:

{{ .foo | join "," }}

[subchen]

pull request is welcome 😄

[subchen]

Actually, we already have join

[yingzhuo]

OK.
I'll do the late. It's busy now.

[yingzhuo]

PR #19 .

merge please.