Repository Analysis

BurntSushi/ripgrep

ripgrep recursively searches directories for a regex pattern while respecting your gitignore

5.9 Low AI signal View on GitHub

Analysis Overview

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).

5.9
Adjusted Score
5.9
Raw Score
100%
Time Factor
2026-07-14
Last Push
66.1K
Stars
Rust
Language
62.6K
Lines of Code
146
Files
338
Pattern Hits
2026-07-14
Scan Date
0.01
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

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.

Severity Breakdown

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.

CRITICAL 0HIGH 2MEDIUM 9LOW 327

Directory Score Breakdown

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.

Pattern Findings

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.

Over-Commented Block325 hits · 320 pts
SeverityFileLineSnippetContext
LOWcrates/searcher/src/line_buffer.rs1use std::io;COMMENT
LOWcrates/searcher/src/line_buffer.rs41COMMENT
LOWcrates/searcher/src/line_buffer.rs141 pub(crate) fn capacity(COMMENT
LOWcrates/searcher/src/line_buffer.rs161 &mut self,COMMENT
LOWcrates/searcher/src/line_buffer.rs241 }COMMENT
LOWcrates/searcher/src/line_buffer.rs281 /// This is a convenience function for `consume(buffer.len())`.COMMENT
LOWcrates/searcher/src/line_buffer.rs301 pos: usize,COMMENT
LOWcrates/searcher/src/line_buffer.rs381 ///COMMENT
LOWcrates/searcher/src/sink.rs61COMMENT
LOWcrates/searcher/src/sink.rs81/// this, which already implements `SinkError`.COMMENT
LOWcrates/searcher/src/sink.rs101/// [`sinks`] module.COMMENT
LOWcrates/searcher/src/sink.rs121 /// If this returns an error, then searching is stopped immediately,COMMENT
LOWcrates/searcher/src/sink.rs141 /// of the searcher.COMMENT
LOWcrates/searcher/src/sink.rs161 /// `false`, then searching is stopped immediately and `finish` is called.COMMENT
LOWcrates/searcher/src/sink.rs181 ///COMMENT
LOWcrates/searcher/src/sink.rs201 ///COMMENT
LOWcrates/searcher/src/sink.rs381 }COMMENT
LOWcrates/searcher/src/sink.rs461 &self.kindCOMMENT
LOWcrates/searcher/src/sink.rs481 self.absolute_byte_offsetCOMMENT
LOWcrates/searcher/src/sink.rs501/// `Sink`.COMMENT
LOWcrates/searcher/src/sink.rs521COMMENT
LOWcrates/searcher/src/sink.rs561 None => {COMMENT
LOWcrates/searcher/src/sink.rs621 }COMMENT
LOWcrates/searcher/src/lines.rs41/// This iterator avoids borrowing the bytes themselves, and instead requiresCOMMENT
LOWcrates/searcher/src/lines.rs61 ///COMMENT
LOWcrates/searcher/src/searcher/mod.rs41/// true, which is why binary detection is disabled by default.COMMENT
LOWcrates/searcher/src/searcher/mod.rs61 /// This is the default.COMMENT
LOWcrates/searcher/src/searcher/mod.rs81 }COMMENT
LOWcrates/searcher/src/searcher/mod.rs121///COMMENT
LOWcrates/searcher/src/searcher/mod.rs161 passthru: bool,COMMENT
LOWcrates/searcher/src/searcher/mod.rs241/// to construct a `Searcher` from a `SearcherBuilder`.COMMENT
LOWcrates/searcher/src/searcher/mod.rs361 }COMMENT
LOWcrates/searcher/src/searcher/mod.rs381 /// will be used if possible and if they are enabled, which avoids usingCOMMENT
LOWcrates/searcher/src/searcher/mod.rs421 /// Whether to enable the "passthru" feature or not.COMMENT
LOWcrates/searcher/src/searcher/mod.rs441 /// * When searching using a fixed size buffer, the heap limit controlsCOMMENT
LOWcrates/searcher/src/searcher/mod.rs461 self.config.heap_limit = bytes;COMMENT
LOWcrates/searcher/src/searcher/mod.rs481 /// the memory maps.COMMENT
LOWcrates/searcher/src/searcher/mod.rs521 /// transcoded using the encoding, unless a BOM is present. If a BOM isCOMMENT
LOWcrates/searcher/src/searcher/mod.rs541 /// Enable automatic transcoding based on BOM sniffing.COMMENT
LOWcrates/searcher/src/searcher/mod.rs561 /// This is useful for searching sorted files where it is expected that allCOMMENT
LOWcrates/searcher/src/searcher/mod.rs581 /// By default, no limit is set.COMMENT
LOWcrates/searcher/src/searcher/mod.rs601 /// public API methods, which can be queried in implementations of `Sink`COMMENT
LOWcrates/searcher/src/searcher/mod.rs621 /// multi line search. In particular, multi line searches cannot beCOMMENT
LOWcrates/searcher/src/searcher/mod.rs861 /// Returns true if and only if this searcher is configured to performCOMMENT
LOWcrates/searcher/src/searcher/mod.rs881 ///COMMENT
LOWcrates/searcher/src/searcher/mmap.rs21impl Default for MmapChoice {COMMENT
LOWcrates/searcher/src/searcher/mmap.rs41 /// without simultaneously negating some or all of their benefits.COMMENT
LOWcrates/searcher/src/searcher/glue.rs221 let line =COMMENT
LOWcrates/core/haystack.rs121 /// Returns true if and only if this entry corresponds to a haystack toCOMMENT
LOWcrates/core/main.rs21// allocator, which is pretty good. In particular, ripgrep does not have aCOMMENT
LOWcrates/core/main.rs421COMMENT
LOWcrates/core/messages.rs21static MESSAGES: AtomicBool = AtomicBool::new(false);COMMENT
LOWcrates/core/flags/defs.rs1861 // This checks that invalid UTF-8 can be used. This case isn't too trickyCOMMENT
LOWcrates/core/flags/hiargs.rs221COMMENT
LOWcrates/core/flags/hiargs.rs341 ///COMMENT
LOWcrates/core/flags/hiargs.rs741 builder.encoding(Some(enc.clone()));COMMENT
LOWcrates/core/flags/hiargs.rs841 BufferMode::Line => grep::cli::stdout_buffered_line(color),COMMENT
LOWcrates/core/flags/hiargs.rs921/// State that only needs to be computed once during argument parsing.COMMENT
LOWcrates/core/flags/hiargs.rs961}COMMENT
LOWcrates/core/flags/hiargs.rs1141COMMENT
265 more matches not shown…
Decorative Section Separators5 hits · 21 pts
SeverityFileLineSnippetContext
MEDIUMcrates/core/flags/complete/rg.zsh658# ------------------------------------------------------------------------------COMMENT
MEDIUMcrates/core/flags/complete/rg.zsh683# ------------------------------------------------------------------------------COMMENT
MEDIUMcrates/core/flags/complete/rg.zsh685# -----------COMMENT
MEDIUMcrates/core/flags/complete/rg.zsh689# ------------------------------------------------------------------------------COMMENT
MEDIUMcrates/core/flags/complete/rg.zsh696# ------------------------------------------------------------------------------COMMENT
AI Response Leakage2 hits · 15 pts
SeverityFileLineSnippetContext
HIGHcrates/core/flags/complete/rg.zsh567# The next line defines `--color`. In this example, `--color` doesn't have aCOMMENT
HIGHcrates/core/flags/complete/rg.zsh578# The last line defines an operand (a non-option argument). In this example, theCOMMENT
AI Slop Vocabulary5 hits · 14 pts
SeverityFileLineSnippetContext
MEDIUMcrates/core/flags/lowargs.rs234 /// Automatically determine the binary mode to use. Essentially, whenCOMMENT
MEDIUMcrates/core/flags/complete/rg.zsh512# comprehensive; it covers just enough of the basic structure, syntax, andCOMMENT
MEDIUMcrates/cli/src/decompress.rs287/// The purpose of this reader is to provide a seamless way to decompress theCOMMENT
MEDIUMtests/util.rs518/// how to disable it. Absolutely fucking bonkers.COMMENT
LOW.github/workflows/ci.yml39 # different OS will just use normal cargo.COMMENT
Structural Annotation Overuse1 hit · 2 pts
SeverityFileLineSnippetContext
LOWcrates/ignore/src/gitignore.rs217 /// NOTE: This method is more expensive than walking the directory hierarchyCOMMENT