Diff

# Diff — Side-by-side diff viewer Two-column diff viewer: original (left) vs modified (right). Synchronized scrolling with color-coded lines and line numbers. ## Usage Launch: `[tui/launch <panel> "diff" "apps/diff/src/diff.dft"]` ### Keys | Key | Action | |-----|--------| | `j` / `down` | Scroll down | | `k` / `up` | Scroll up | | `page_down` | Page down | | `page_up` | Page up | | `g` / `home` | Go to top | | `G` / `end` | Go to bottom | ### Line colors | Color | Meaning | |-------|---------| | Green | Added line (right only) | | Red | Removed line (left only) | | Yellow/Orange | Changed line (modified content) | | Cyan | Hunk header | | Default | Unchanged context | ## Public RPC methods Call via `[rpc <runtime-name> "method-name" args...]`: | Method | Args | Description | |--------|------|-------------| | `load-diff` | `left-path right-path` | Load two files and diff them | | `load-text` | `left-text right-text left-label right-label` | Diff two text strings | | `clear` | — | Clear the diff view | | `goto-line` | `line` | Scroll to a specific pair (1-based) | | `reload` | — | Reload from current file paths | | `get-state` | — | Return state as JSON | | `get-pairs` | `start count` | Return a slice of pairs as JSON | ## Pub/sub topics Publish to the diff panel's ID: | Topic | Data | Description | |-------|------|-------------| | `diff/load` | JSON `{left-text, right-text, left-label?, right-label?}` | Load a diff | | `diff/clear` | — | Clear the view | | `diff/goto-line` | `"42"` | Scroll to pair | ## Integration From another app (e.g., git):

set diff-id [tui/find-panel "diff"]
if ($diff-id == 0) {
    set diff-id [tui/split :vertical]
    [tui/launch $diff-id "diff" "apps/diff/src/diff.dft"]
}
[rpc "diff" "load-diff" $original-file $modified-file]
[tui/focus-id $diff-id]