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Update findRe.md

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Bjørn Erik Pedersen 2023-01-18 09:36:25 +01:00 committed by GitHub
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@ -36,5 +36,24 @@ To limit the number of matches to one:
You can write and test your regular expression using [regex101.com](https://regex101.com/). Be sure to select the Go flavor before you begin.
{{% /note %}}
## findRESubmatch
In Hugo 0.110.0 we added a variant of `findRe` that returns a slice of strings holding the text of the leftmost match of the regular expression in s and the matches, if any, of its subexpressions.
This:
```go-html-template
{{ findRESubmatch §§<a\s*href="(.+?)">(.+?)</a>§§ §§<li><a href="#foo">Foo</a></li> <li><a href="#bar">Bar</a></li>§§ | print | safeHTML }}
```
Will print:
```
[[<a href=\"#foo\">Foo</a> #foo Foo] [<a href=\"#bar\">Bar</a> #bar Bar]]
```
{{< new-in "0.110.0" >}}
[RE2]: https://github.com/google/re2/wiki/Syntax
[string literal]: https://go.dev/ref/spec#String_literals