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docs: tags on silent rules #55

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Sep 4, 2024
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docs: tags on silent rules #55

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18 changes: 17 additions & 1 deletion src/grammars/syntax.md
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Expand Up @@ -426,7 +426,23 @@ let first = pairs.find_first_tagged("tag");
let all_tagged = pairs.find_tagged("tag");
```

Note that you need to enable "grammar-extras" feature to use this functionality:
Note that the tagged part of the rule cannot be [silent](#silent)
or the tag will be ignored, as would be the case in the following example.

```pest
rule = { #tag = expression }
expression = _{ ... }
```

This also includes [built-in](/src/grammars/built-ins.md) rules, which are always silent.
So the following example will also not create a tag.

```pest
rule = { #tag = ASCII }
```

[!WARNING]
You need to enable "grammar-extras" feature to use this functionality:

```toml
# ...
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