# tui/eval Eval source text in a target panel's runtime. The target and (optional) source can be specified as numeric panel IDs or string tags (resolved via `tui/find-panel`). If a source panel is given, the result is sent back as an `:eval_result` event to that panel. ## Syntax

[tui/eval panel-id-or-tag source [source-panel-or-tag]]

## Parameters - `panel-id-or-tag` — target panel (numeric ID or string tag) - `source` — source text to evaluate - `source-panel-or-tag` — (optional) panel to receive the `:eval_result` event ## Returns bool ## Example

# Eval in panel by numeric ID
[tui/eval 2 "(+ 1 2)"]

# Eval in panel by tag
[tui/eval "shell" "(println *features*) "]

# Eval with source callback (result sent back)
[tui/eval "editor" "(current-line)" [tui/self]]