A hardware-accelerated GPU terminal emulator focusing to run in desktops and browsers.
This report presents the forensic synthetic code analysis of raphamorim/rio, a Rust project with 7,417 GitHub stars. SynthScan v2.0 examined 211,611 lines of code across 509 source files, recording 819 pattern matches distributed across 12 syntactic categories. The overall adjusted score of 4.8 places this repository in the Likely human-written band.
The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).
This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.
Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.
This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.
The scanner identified 819 distinct pattern matches across 12 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | librio-wasm/src/lib.rs | 1 | //! librio's JS ABI: `librio` (without its `pty` feature) compiled to | COMMENT |
| LOW | librio-wasm/src/lib.rs | 61 | pub const KEY_ACTION_RELEASE: u32 = 2; | COMMENT |
| LOW | librio-wasm/src/lib.rs | 681 | /// string in place of the base char so a ZWJ emoji or a | COMMENT |
| LOW | misc/scripts/drawable-chars.sh | 1 | #!/bin/bash | COMMENT |
| LOW | rio-graphics/src/lib.rs | 1 | // Copyright (c) 2023-present, Raphael Amorim. | COMMENT |
| LOW | rio-graphics/src/lib.rs | 21 | #[cfg(feature = "glyph")] | COMMENT |
| LOW | rio-graphics/src/lib.rs | 101 | /// Key for `Sugarloaf::image_data` and the renderer's per-image | COMMENT |
| LOW | rio-graphics/src/lib.rs | 141 | } | COMMENT |
| LOW | rio-graphics/src/glyph/glyf_decode.rs | 1 | // OpenType `glyf` simple-glyph decoder. | COMMENT |
| LOW | rio-graphics/src/glyph/glyf_decode.rs | 21 | // direct dep. | COMMENT |
| LOW | rio-graphics/src/glyph/glyph_registry.rs | 1 | // Per-terminal registry of glyphs registered over Glyph Protocol. | COMMENT |
| LOW | rio-graphics/src/glyph/glyph_registry.rs | 21 | COMMENT | |
| LOW | rio-graphics/src/glyph/glyph_registry.rs | 41 | /// in 21 bits; the remaining 11 bits give 2048 versions before | COMMENT |
| LOW | rio-graphics/src/glyph/glyph_registry.rs | 101 | /// bump rather than the underlying bytes. A single `ColrV1` payload | COMMENT |
| LOW | rio-graphics/src/glyph/glyph_registry.rs | 121 | pub insertion_id: u64, | COMMENT |
| LOW | rio-graphics/src/glyph/mod.rs | 1 | // Copyright (c) 2023-present, Raphael Amorim. | COMMENT |
| LOW | corcovado/src/stream.rs | 21 | COMMENT | |
| LOW | corcovado/src/token.rs | 1 | // TODO: replace "//" with "///" and fix TcpListener with Evented | COMMENT |
| LOW | corcovado/src/token.rs | 21 | // use std::io::{self, Read}; | COMMENT |
| LOW | corcovado/src/token.rs | 41 | // let listener = TcpListener::bind(&"127.0.0.1:0".parse()?)?; | COMMENT |
| LOW | corcovado/src/token.rs | 61 | // // Event storage | COMMENT |
| LOW | corcovado/src/token.rs | 81 | // if next_socket_index == MAX_SOCKETS { | COMMENT |
| LOW | corcovado/src/token.rs | 101 | // } | COMMENT |
| LOW | corcovado/src/token.rs | 121 | // e => panic!("err={:?}", e), // Unexpected error | COMMENT |
| LOW | corcovado/src/lib.rs | 1 | //! A low-level readiness-based IO library focused on what Rio needs from its | COMMENT |
| LOW | corcovado/src/lib.rs | 61 | /// Unix this scheme is then also extensible to all other file descriptors with | COMMENT |
| LOW | corcovado/src/lib.rs | 81 | /// Also note that for types which represent streams of bytes the mio | COMMENT |
| LOW | corcovado/src/lib.rs | 101 | /// When put together these two types enable custom Windows handles to be | COMMENT |
| LOW | corcovado/src/event_imp.rs | 1 | use crate::{Poll, Token}; | COMMENT |
| LOW | corcovado/src/event_imp.rs | 21 | /// [`Registration`] and [`SetReadiness`]. In this case, the implementer takes | COMMENT |
| LOW | corcovado/src/event_imp.rs | 41 | // } | COMMENT |
| LOW | corcovado/src/event_imp.rs | 61 | // } | COMMENT |
| LOW | corcovado/src/event_imp.rs | 81 | // pub fn new(when: Instant) -> Deadline { | COMMENT |
| LOW | corcovado/src/event_imp.rs | 101 | // Instant::now() >= self.when | COMMENT |
| LOW | corcovado/src/event_imp.rs | 121 | // } | COMMENT |
| LOW | corcovado/src/event_imp.rs | 141 | /// | COMMENT |
| LOW | corcovado/src/event_imp.rs | 241 | COMMENT | |
| LOW | corcovado/src/event_imp.rs | 261 | /// assert!(opts.is_edge()); | COMMENT |
| LOW | corcovado/src/event_imp.rs | 281 | /// | COMMENT |
| LOW | corcovado/src/event_imp.rs | 301 | /// | COMMENT |
| LOW | corcovado/src/event_imp.rs | 321 | /// | COMMENT |
| LOW | corcovado/src/event_imp.rs | 361 | /// Returns true if the options include edge-triggered notifications. | COMMENT |
| LOW | corcovado/src/event_imp.rs | 381 | /// Returns true if the options include level-triggered notifications. | COMMENT |
| LOW | corcovado/src/event_imp.rs | 401 | /// Returns true if the options includes oneshot. | COMMENT |
| LOW | corcovado/src/event_imp.rs | 421 | #[inline] | COMMENT |
| LOW | corcovado/src/event_imp.rs | 441 | /// ``` | COMMENT |
| LOW | corcovado/src/event_imp.rs | 461 | /// | COMMENT |
| LOW | corcovado/src/event_imp.rs | 481 | /// ``` | COMMENT |
| LOW | corcovado/src/event_imp.rs | 601 | /// | COMMENT |
| LOW | corcovado/src/event_imp.rs | 621 | /// ``` | COMMENT |
| LOW | corcovado/src/event_imp.rs | 641 | /// | COMMENT |
| LOW | corcovado/src/event_imp.rs | 661 | /// Returns a `Ready` representing readable readiness. | COMMENT |
| LOW | corcovado/src/event_imp.rs | 681 | /// Returns a `Ready` representing writable readiness. | COMMENT |
| LOW | corcovado/src/event_imp.rs | 701 | #[inline] | COMMENT |
| LOW | corcovado/src/event_imp.rs | 721 | /// use corcovado::Ready; | COMMENT |
| LOW | corcovado/src/event_imp.rs | 741 | /// ``` | COMMENT |
| LOW | corcovado/src/event_imp.rs | 761 | /// See [`Poll`] for more documentation on polling. | COMMENT |
| LOW | corcovado/src/event_imp.rs | 781 | /// See [`Poll`] for more documentation on polling. | COMMENT |
| LOW | corcovado/src/event_imp.rs | 801 | self.contains(Ready(ERROR)) | COMMENT |
| LOW | corcovado/src/event_imp.rs | 821 | /// assert!(readiness.is_readable()); | COMMENT |
| 713 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| CRITICAL | frontends/rioterm/src/application.rs | 390 | if route.window.screen.renderer.scrollbar.needs_redraw() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1230 | || route.window.screen.renderer.confirm_quit.is_active() | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1258 | route.window.screen.renderer.scrollbar.end_drag(); | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1505 | if route.window.screen.renderer.scrollbar.is_dragging() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1522 | route.window.screen.mouse.hint_click_latched.take() | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1627 | || route.window.screen.renderer.confirm_quit.is_active() | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1634 | if route.window.screen.renderer.assistant.is_active() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1665 | if route.window.screen.renderer.command_palette.is_enabled() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1684 | if route.window.screen.renderer.search.is_active() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1749 | if route.window.screen.renderer.scrollbar.is_dragging() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1781 | route.window.screen.renderer.trail_cursor.snap(); | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1907 | if route.window.screen.mouse.hint_click_latched.is_none() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 1926 | || route.window.screen.renderer.confirm_quit.is_active() | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 2019 | if route.window.screen.renderer.assistant.is_active() { | CODE |
| CRITICAL | frontends/rioterm/src/application.rs | 2135 | if route.window.screen.renderer.assistant.is_active() { | CODE |
| CRITICAL | frontends/rioterm/src/screen/mod.rs | 3880 | let cursor_row = cursor.state.pos.row.0.max(0) as usize; | CODE |
| CRITICAL | frontends/rioterm/src/router/mod.rs | 129 | self.window.screen.renderer.assistant.clear(); | CODE |
| CRITICAL | frontends/rioterm/src/router/mod.rs | 135 | self.window.screen.renderer.confirm_quit.set_active(true); | CODE |
| CRITICAL | frontends/rioterm/src/router/mod.rs | 167 | if self.window.screen.renderer.command_palette.is_enabled() { | CODE |
| CRITICAL | frontends/rioterm/src/router/mod.rs | 278 | self.window.screen.renderer.command_palette.query.clone(); | CODE |
| CRITICAL⚡ | frontends/rioterm/src/router/mod.rs | 318 | if self.window.screen.renderer.confirm_quit.is_active() { | CODE |
| CRITICAL⚡ | frontends/rioterm/src/router/mod.rs | 322 | self.window.screen.renderer.confirm_quit.set_active(false); | CODE |
| CRITICAL⚡ | frontends/rioterm/src/router/mod.rs | 326 | self.window.screen.renderer.confirm_quit.set_active(false); | CODE |
| CRITICAL | frontends/rioterm/src/router/mod.rs | 346 | if self.window.screen.renderer.assistant.is_active() { | CODE |
| CRITICAL | frontends/rioterm/src/router/mod.rs | 349 | self.window.screen.renderer.assistant.clear(); | CODE |
| CRITICAL | rio-vt/src/crosswords/mod.rs | 3084 | let column = self.grid.cursor.pos.col.saturating_sub(cols.0); | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | rio-window/src/platform_impl/macos/window_delegate.rs | 354 | /// will be failed. In this implementation, we will try again by using | COMMENT |
| HIGH | frontends/rioterm/src/layout/compute_tests.rs | 4 | // I've added some real scenarios so I can make sure it doesn't go off again. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | misc/scripts/drawable-chars.sh | 9 | # procedurally and should be crisp + seamless in any font; ranges not yet | COMMENT |
| MEDIUM | rio-window/src/window.rs | 523 | /// the most robust way to track the DPI you need to use to draw. | COMMENT |
| MEDIUM | rio-grid/src/lib.rs | 1910 | // sprite (crisp + seamless in any font) instead of the font | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | rio-vt/src/ansi/graphics.rs | 53 | /// Source rectangle within the image, exactly as requested | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | rio-unicode/scripts/unicode.py | 98 | CODE | |
| LOW | rio-unicode/scripts/unicode.py | 147 | CODE | |
| LOW | rio-unicode/scripts/unicode.py | 325 | CODE | |
| LOW | rio-unicode/scripts/grapheme.py | 40 | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | corcovado/src/lazycell.rs | 66 | /// # Return value | COMMENT |
| LOW | corcovado/src/lazycell.rs | 253 | /// # Return value | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | sugarloaf/src/sugarloaf.rs | 59 | /// `memory/project_sugarloaf_content_drop.md`. Phase 1a: scaffold | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | sugarloaf/src/font/loader.rs | 448 | // Step 1: collect all font faces from additional sources (user directories) | COMMENT |
| LOW | sugarloaf/src/font/loader.rs | 476 | // Step 3: apply CSS-spec matching algorithm to select the best face | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | sugarloaf/src/font/loader.rs | 448 | // Step 1: collect all font faces from additional sources (user directories) | COMMENT |
| LOW | sugarloaf/src/font/loader.rs | 476 | // Step 3: apply CSS-spec matching algorithm to select the best face | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | rio-vt/benches/vt_input.rs | 28 | "the quick brown fox jumps over the lazy dog 0123456789 lorem ipsum dolor sit amet\r\n"; | CODE |
| LOW | rio-vt/benches/vt_input.rs | 28 | "the quick brown fox jumps over the lazy dog 0123456789 lorem ipsum dolor sit amet\r\n"; | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | rio-unicode/scripts/grapheme.py | 22 | CODE |