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docs: add named groups details to Regexp Syntax section

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kerrsmith
2021-11-08 09:06:05 +00:00
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docs/content/routing/routers/index.md
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@@ -251,6 +251,7 @@ The table below lists all the available matchers:
`HostRegexp` and `Path` accept an expression with zero or more groups enclosed by curly braces. `HostRegexp` and `Path` accept an expression with zero or more groups enclosed by curly braces.
Named groups can be like `{name:pattern}` that matches the given regexp pattern or like `{name}` that matches anything until the next dot. Named groups can be like `{name:pattern}` that matches the given regexp pattern or like `{name}` that matches anything until the next dot.
The group name (`name` is the above examples) is an arbitrary value.
Any pattern supported by [Go's regexp package](https://golang.org/pkg/regexp/) may be used (example: `{subdomain:[a-z]+}.{domain}.com`). Any pattern supported by [Go's regexp package](https://golang.org/pkg/regexp/) may be used (example: `{subdomain:[a-z]+}.{domain}.com`).
!!! info "Combining Matchers Using Operators and Parenthesis" !!! info "Combining Matchers Using Operators and Parenthesis"