Description

printString[go.shape.string]() in styled.go:164 enters infinite recursion, causing a goroutine stack overflow. This kills rendering performance to ~1 fps.

Stack Trace (truncated)

The goroutine shows 20+ recursive calls to the same function:

goroutine 227 [running]:
github.com/charmbracelet/ultraviolet.printString[go.shape.string]()
  styled.go:164 +0x6d8
github.com/charmbracelet/ultraviolet.printString[go.shape.string]()
  styled.go:164 +0x6d8
[...repeats 20+ times...]

Created at:
charm.land/bubbletea/v2.(*Program).startRenderer()
  tea.go:1387 +0x160

Environment

• Go 1.26
• ultraviolet v0.0.0-20260303162955-0b88c25f3fff
• bubbletea v2.0.1
• macOS arm64

Impact

Renders the TUI unusable at 1 fps when this recursion triggers.