ripgrep recursively searches directories for a regex pattern while respecting your gitignore
This report presents the forensic synthetic code analysis of BurntSushi/ripgrep, a Rust project with 66,105 GitHub stars. SynthScan v2.0 examined 62,572 lines of code across 146 source files, recording 338 pattern matches distributed across 5 syntactic categories. The overall adjusted score of 5.9 places this repository in the Low AI signal 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 338 distinct pattern matches across 5 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 | crates/searcher/src/line_buffer.rs | 1 | use std::io; | COMMENT |
| LOW | crates/searcher/src/line_buffer.rs | 41 | COMMENT | |
| LOW | crates/searcher/src/line_buffer.rs | 141 | pub(crate) fn capacity( | COMMENT |
| LOW | crates/searcher/src/line_buffer.rs | 161 | &mut self, | COMMENT |
| LOW | crates/searcher/src/line_buffer.rs | 241 | } | COMMENT |
| LOW | crates/searcher/src/line_buffer.rs | 281 | /// This is a convenience function for `consume(buffer.len())`. | COMMENT |
| LOW | crates/searcher/src/line_buffer.rs | 301 | pos: usize, | COMMENT |
| LOW | crates/searcher/src/line_buffer.rs | 381 | /// | COMMENT |
| LOW | crates/searcher/src/sink.rs | 61 | COMMENT | |
| LOW | crates/searcher/src/sink.rs | 81 | /// this, which already implements `SinkError`. | COMMENT |
| LOW | crates/searcher/src/sink.rs | 101 | /// [`sinks`] module. | COMMENT |
| LOW | crates/searcher/src/sink.rs | 121 | /// If this returns an error, then searching is stopped immediately, | COMMENT |
| LOW | crates/searcher/src/sink.rs | 141 | /// of the searcher. | COMMENT |
| LOW | crates/searcher/src/sink.rs | 161 | /// `false`, then searching is stopped immediately and `finish` is called. | COMMENT |
| LOW | crates/searcher/src/sink.rs | 181 | /// | COMMENT |
| LOW | crates/searcher/src/sink.rs | 201 | /// | COMMENT |
| LOW | crates/searcher/src/sink.rs | 381 | } | COMMENT |
| LOW | crates/searcher/src/sink.rs | 461 | &self.kind | COMMENT |
| LOW | crates/searcher/src/sink.rs | 481 | self.absolute_byte_offset | COMMENT |
| LOW | crates/searcher/src/sink.rs | 501 | /// `Sink`. | COMMENT |
| LOW | crates/searcher/src/sink.rs | 521 | COMMENT | |
| LOW | crates/searcher/src/sink.rs | 561 | None => { | COMMENT |
| LOW | crates/searcher/src/sink.rs | 621 | } | COMMENT |
| LOW | crates/searcher/src/lines.rs | 41 | /// This iterator avoids borrowing the bytes themselves, and instead requires | COMMENT |
| LOW | crates/searcher/src/lines.rs | 61 | /// | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 41 | /// true, which is why binary detection is disabled by default. | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 61 | /// This is the default. | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 81 | } | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 121 | /// | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 161 | passthru: bool, | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 241 | /// to construct a `Searcher` from a `SearcherBuilder`. | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 361 | } | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 381 | /// will be used if possible and if they are enabled, which avoids using | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 421 | /// Whether to enable the "passthru" feature or not. | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 441 | /// * When searching using a fixed size buffer, the heap limit controls | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 461 | self.config.heap_limit = bytes; | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 481 | /// the memory maps. | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 521 | /// transcoded using the encoding, unless a BOM is present. If a BOM is | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 541 | /// Enable automatic transcoding based on BOM sniffing. | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 561 | /// This is useful for searching sorted files where it is expected that all | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 581 | /// By default, no limit is set. | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 601 | /// public API methods, which can be queried in implementations of `Sink` | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 621 | /// multi line search. In particular, multi line searches cannot be | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 861 | /// Returns true if and only if this searcher is configured to perform | COMMENT |
| LOW | crates/searcher/src/searcher/mod.rs | 881 | /// | COMMENT |
| LOW | crates/searcher/src/searcher/mmap.rs | 21 | impl Default for MmapChoice { | COMMENT |
| LOW | crates/searcher/src/searcher/mmap.rs | 41 | /// without simultaneously negating some or all of their benefits. | COMMENT |
| LOW | crates/searcher/src/searcher/glue.rs | 221 | let line = | COMMENT |
| LOW | crates/core/haystack.rs | 121 | /// Returns true if and only if this entry corresponds to a haystack to | COMMENT |
| LOW | crates/core/main.rs | 21 | // allocator, which is pretty good. In particular, ripgrep does not have a | COMMENT |
| LOW | crates/core/main.rs | 421 | COMMENT | |
| LOW | crates/core/messages.rs | 21 | static MESSAGES: AtomicBool = AtomicBool::new(false); | COMMENT |
| LOW | crates/core/flags/defs.rs | 1861 | // This checks that invalid UTF-8 can be used. This case isn't too tricky | COMMENT |
| LOW | crates/core/flags/hiargs.rs | 221 | COMMENT | |
| LOW | crates/core/flags/hiargs.rs | 341 | /// | COMMENT |
| LOW | crates/core/flags/hiargs.rs | 741 | builder.encoding(Some(enc.clone())); | COMMENT |
| LOW | crates/core/flags/hiargs.rs | 841 | BufferMode::Line => grep::cli::stdout_buffered_line(color), | COMMENT |
| LOW | crates/core/flags/hiargs.rs | 921 | /// State that only needs to be computed once during argument parsing. | COMMENT |
| LOW | crates/core/flags/hiargs.rs | 961 | } | COMMENT |
| LOW | crates/core/flags/hiargs.rs | 1141 | COMMENT | |
| 265 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | crates/core/flags/complete/rg.zsh | 658 | # ------------------------------------------------------------------------------ | COMMENT |
| MEDIUM⚡ | crates/core/flags/complete/rg.zsh | 683 | # ------------------------------------------------------------------------------ | COMMENT |
| MEDIUM⚡ | crates/core/flags/complete/rg.zsh | 685 | # ----------- | COMMENT |
| MEDIUM⚡ | crates/core/flags/complete/rg.zsh | 689 | # ------------------------------------------------------------------------------ | COMMENT |
| MEDIUM⚡ | crates/core/flags/complete/rg.zsh | 696 | # ------------------------------------------------------------------------------ | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | crates/core/flags/complete/rg.zsh | 567 | # The next line defines `--color`. In this example, `--color` doesn't have a | COMMENT |
| HIGH | crates/core/flags/complete/rg.zsh | 578 | # The last line defines an operand (a non-option argument). In this example, the | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | crates/core/flags/lowargs.rs | 234 | /// Automatically determine the binary mode to use. Essentially, when | COMMENT |
| MEDIUM | crates/core/flags/complete/rg.zsh | 512 | # comprehensive; it covers just enough of the basic structure, syntax, and | COMMENT |
| MEDIUM | crates/cli/src/decompress.rs | 287 | /// The purpose of this reader is to provide a seamless way to decompress the | COMMENT |
| MEDIUM | tests/util.rs | 518 | /// how to disable it. Absolutely fucking bonkers. | COMMENT |
| LOW | .github/workflows/ci.yml | 39 | # different OS will just use normal cargo. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | crates/ignore/src/gitignore.rs | 217 | /// NOTE: This method is more expensive than walking the directory hierarchy | COMMENT |