attributed-string

AttributedString Patterns

Correct API shapes and patterns for Foundation's AttributedString. Covers creating styled text, applying attributes to ranges, text alignment, writing direction, line height control, text selection and editing, discontiguous substrings, and SwiftUI integration.

When This Skill Activates

Use this skill when the user:

• Asks about AttributedString creation or manipulation
• Wants to style text with fonts, colors, underlines, or other attributes
• Mentions text alignment, writing direction, or line height
• Asks about text selection or text editing with AttributedString
• Wants to work with DiscontiguousAttributedSubstring or RangeSet
• Mentions TextEditor with AttributedString in SwiftUI
• Asks about rich text formatting in Swift
• Wants to replace or modify text within an AttributedString
• Mentions paragraphStyle, textSelectionAffinity, or AttributedTextSelection

Decision Tree

What do you need with AttributedString?
|
+-- Create or style text
|   |
|   +-- Simple inline attributes (font, color)
|   |   --> Creating and Styling section
|   |
|   +-- Paragraph-level formatting (alignment, line height)
|       --> Text Alignment and Formatting section
|
+-- Control text layout
|   |
|   +-- Writing direction (LTR / RTL)
|   |   --> Writing Direction and Line Height section
|   |
|   +-- Line spacing / height
|       --> Writing Direction and Line Height section
|
+-- Edit or select text programmatically
|   |
|   +-- Replace selection with characters or AttributedString
|   |   --> Text Selection and Editing section
|   |
|   +-- Work with multiple non-contiguous ranges
|       --> DiscontiguousAttributedSubstring section
|
+-- Display in SwiftUI
    --> SwiftUI Integration section

API Availability