Style-tag-registry-type

StyleTagRegistry is the public registry type used to map style-tag names to TextStyle values. It is a direct alias to the registry model used by local formatter tag sets, global tag customization, and default tag helpers.

Interface

pub type StyleTagRegistry = @utils.StyleTagRegistry

output

• StyleTagRegistry - Public style-tag registry value containing named TextStyle entries.

Explanation

Detailed rules explaining key parameters and behaviors

• This is a type alias, not a formatter instance.
• The current registry model stores named TextStyle entries internally.
• style_tag_registry() creates an empty value of this type.
• default_style_tag_registry(), global_style_tag_registry(), and formatter methods such as with_style_tags(...) all operate on this same public registry type.

How to Use

Here are some specific examples provided.

When Need A Typed Registry For Local Formatter Tags

When style tags should be assembled before they are attached to a formatter:

let tags : StyleTagRegistry = style_tag_registry()
  .set_tag("accent", fg=Some("#4cc9f0"), bold=true)

In this example, the registry remains a standalone typed value until a formatter uses it.

When Need To Pass A Registry Through Shared Setup Code

When application boot code should return or store a reusable tag set:

let tags = default_style_tag_registry()

In this example, the alias makes it explicit that the value is the registry itself rather than one formatter.

Error Case

e.g.:

• StyleTagRegistry itself does not have a runtime failure mode.

• Unknown tag lookups simply produce no matching style instead of raising an error.

Notes

1. Use style_tag_registry() or default_style_tag_registry() when you need a value of this type in code.

2. Attach this registry to a TextFormatter when tag lookup should affect actual rendered output.