tstack/lnav

2.5

Adjusted Score

2.5

Raw Score

100%

Time Factor

2026-07-14

Last Push

10.4K

Stars

C++

Language

249.8K

Lines of Code

653

Files

651

Pattern Hits

2026-07-14

Scan Date

0.00

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 1HIGH 0MEDIUM 15LOW 635

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 651 distinct pattern matches across 16 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 Block582 hits · 522 pts

Severity	File	Line	Snippet	Context
LOW	tools/bin2c.c	1	// bin2c.c	COMMENT
LOW	test/parser_debugger.py	1	#! /usr/bin/env python3	COMMENT
LOW	docs/_config.yml	1	# Welcome to Jekyll!	COMMENT
LOW	docs/_config.yml	41	syntax_highlighter: rouge	COMMENT
LOW	docs/_config.yml	61	# - Gemfile.lock	COMMENT
LOW	docs/screenshots/generate.sh	1	#!/usr/bin/env bash	COMMENT
LOW	docs/source/conf.py	1	# -- coding: utf-8 --	COMMENT
LOW	docs/source/conf.py	241	# The suffix of source filenames.	COMMENT
LOW	docs/source/conf.py	261	release = '0.14.1'	COMMENT
LOW	docs/source/conf.py	281	# add_function_parentheses = True	COMMENT
LOW	docs/source/conf.py	301	html_theme = 'furo'	COMMENT
LOW	docs/source/conf.py	321	# html_logo = None	COMMENT
LOW	docs/source/conf.py	341	# ],	COMMENT
LOW	docs/source/conf.py	361		COMMENT
LOW	docs/source/conf.py	401	# Grouping the document tree into LaTeX files. List of tuples	COMMENT
LOW	example-scripts/log_to_csv.sh	1	#!/usr/bin/env bash	COMMENT
LOW	src/tailer/tailer.main.c	21	* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY	COMMENT
LOW	src/tailer/tailer.main.py	1	#!/usr/bin/env python3	COMMENT
LOW	src/spookyhash/SpookyV2.h	1	//	COMMENT
LOW	src/spookyhash/SpookyV2.h	21	// Google's CityHash has similar specs to SpookyHash, and CityHash is faster	COMMENT
LOW	src/spookyhash/SpookyV2.h	41	# define INLINE inline	COMMENT
LOW	src/spookyhash/SpookyV2.h	121	// Final: compute the hash for the current SpookyHash state	COMMENT
LOW	src/spookyhash/SpookyV2.h	141	//	COMMENT
LOW	src/spookyhash/SpookyV2.h	181	s1 ^= s9; s10 ^= s11; s11 = Rot64(s11,46); s10 += s0;	COMMENT
LOW	src/spookyhash/SpookyV2.h	241		COMMENT
LOW	src/spookyhash/SpookyV2.cpp	1	// Spooky Hash	COMMENT
LOW	src/fmtlib/fmt/ostream.h	1	// Formatting library for C++ - std::ostream support	COMMENT
LOW	src/fmtlib/fmt/format-inl.h	1	// Formatting library for C++ - implementation	COMMENT
LOW	src/fmtlib/fmt/format-inl.h	201	} div_small_pow10_infos[] = {{10, 16}, {100, 16}};	COMMENT
LOW	src/fmtlib/fmt/format-inl.h	1281	// 29711844 * 2^-82	COMMENT
LOW	src/fmtlib/fmt/ranges.h	1	// Formatting library for C++ - experimental range support	COMMENT
LOW	src/fmtlib/fmt/xchar.h	1	// Formatting library for C++ - optional wchar_t and exotic character support	COMMENT
LOW	src/fmtlib/fmt/core.h	1	// Formatting library for C++ - the core API for char/UTF-8	COMMENT
LOW	src/fmtlib/fmt/core.h	21	#define FMT_VERSION 100101	COMMENT
LOW	src/fmtlib/fmt/core.h	41	# define FMT_GCC_PRAGMA(arg)	COMMENT
LOW	src/fmtlib/fmt/core.h	61	#ifdef _MSVC_LANG	COMMENT
LOW	src/fmtlib/fmt/core.h	81	#else	COMMENT
LOW	src/fmtlib/fmt/core.h	101	#endif	COMMENT
LOW	src/fmtlib/fmt/core.h	121	# endif	COMMENT
LOW	src/fmtlib/fmt/core.h	141		COMMENT
LOW	src/fmtlib/fmt/core.h	161	# else	COMMENT
LOW	src/fmtlib/fmt/core.h	181		COMMENT
LOW	src/fmtlib/fmt/core.h	201	#ifndef FMT_API	COMMENT
LOW	src/fmtlib/fmt/core.h	221	(!defined(__apple_build_version__) \|\| \	COMMENT
LOW	src/fmtlib/fmt/core.h	281	// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed	COMMENT
LOW	src/fmtlib/fmt/core.h	2921	#endif	COMMENT
LOW	src/fmtlib/fmt/locale.h	1	#include "xchar.h"	COMMENT
LOW	src/fmtlib/fmt/chrono.h	1	// Formatting library for C++ - chrono support	COMMENT
LOW	src/fmtlib/fmt/chrono.h	21	#include "format.h"	COMMENT
LOW	src/fmtlib/fmt/chrono.h	41	#endif	COMMENT
LOW	src/fmtlib/fmt/chrono.h	541	a \| (b << 24) \| (static_cast<unsigned long long>(c) << 48);	COMMENT
LOW	src/fmtlib/fmt/os.h	1	// Formatting library for C++ - optional OS-specific functionality	COMMENT
LOW	src/fmtlib/fmt/os.h	21		COMMENT
LOW	src/fmtlib/fmt/os.h	41	# define FMT_POSIX(call) _##call	COMMENT
LOW	src/fmtlib/fmt/args.h	1	// Formatting library for C++ - dynamic argument lists	COMMENT
LOW	src/fmtlib/fmt/printf.h	1	// Formatting library for C++ - legacy printf implementation	COMMENT
LOW	src/fmtlib/fmt/format.h	41	#include <memory> // std::uninitialized_copy	COMMENT
LOW	src/fmtlib/fmt/format.h	61	#elif FMT_GCC_VERSION >= 700 && \	COMMENT
LOW	src/fmtlib/fmt/format.h	81		COMMENT
LOW	src/fmtlib/fmt/format.h	101		COMMENT
522 more matches not shown…

Decorative Section Separators5 hits · 20 pts

Severity	File	Line	Snippet	Context
MEDIUM⚡	src/third-party/notcurses/include/notcurses/notcurses.h	3921	// ╭──────────────────────────╮	COMMENT
MEDIUM⚡	src/third-party/notcurses/include/notcurses/notcurses.h	3923	// ╭──────────────────────this is the secondary header──────╮	COMMENT
MEDIUM⚡	src/third-party/notcurses/include/notcurses/notcurses.h	3932	// ╰────────────────────────────────────here's the footer───╯	COMMENT
MEDIUM	src/third-party/notcurses/include/notcurses/notcurses.h	4004	// ╭───────────────────╮	COMMENT
MEDIUM	src/third-party/notcurses/include/notcurses/notcurses.h	4019	//╰────────────────────────press q to exit (there is sartrev("no exit"))─╯	COMMENT

AI Slop Vocabulary6 hits · 18 pts

Severity	File	Line	Snippet	Context
MEDIUM	src/fmtlib/fmt/format.h	3503	// Compilers are not aware of how to leverage the maximum value of	COMMENT
MEDIUM	src/third-party/md4c/md4c.c	2522	#define MD_MARK_OPENER 0x04 /* Definitely opener. */	COMMENT
MEDIUM	src/third-party/md4c/md4c.c	2523	#define MD_MARK_CLOSER 0x08 /* Definitely closer. */	COMMENT
MEDIUM	src/third-party/notcurses/include/notcurses/notcurses.h	1890	// Essentially, the kept material does not move. It serves to anchor the	COMMENT
MEDIUM	src/third-party/notcurses/src/lib/render.c	716	// we're also in that case working with hopefully more robust terminals.	COMMENT
MEDIUM	src/third-party/notcurses/src/lib/render.c	752	// we're also in that case working with hopefully more robust terminals.	COMMENT

Fake / Example Data10 hits · 12 pts

Severity	File	Line	Snippet	Context
LOW	demo/loggen.py	8	"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna	CODE
LOW	demo/loggen.py	8	"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna	CODE
LOW⚡	test/textfile_0.md	45	Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliq	CODE
LOW⚡	test/textfile_0.md	45	Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliq	CODE
LOW⚡	test/textfile_0.md	47	<span style="white-space: nowrap">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incidid	CODE
LOW⚡	test/textfile_0.md	47	<span style="white-space: nowrap">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incidid	CODE
LOW	release/loggen.py	62	PATH_COMPS = "Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod tempor incididunt ut labore et dolor	CODE
LOW	release/loggen.py	62	PATH_COMPS = "Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod tempor incididunt ut labore et dolor	CODE
LOW	release/loggen2.py	57	PATH_COMPS = "Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod tempor incididunt ut labore et dolor	CODE
LOW	release/loggen2.py	57	PATH_COMPS = "Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod tempor incididunt ut labore et dolor	CODE

Unused Imports10 hits · 10 pts

Severity	File	Line	Context
LOW	test/parser_debugger.py	31	CODE
LOW	release/loggen.py	4	CODE
LOW	release/loggen2.py	4	CODE
LOW	release/loggen2.py	7	CODE
LOW	docs/screenshots/animate.py	5	CODE
LOW	docs/screenshots/animate.py	8	CODE
LOW	docs/screenshots/render.py	12	CODE
LOW	docs/source/conf.py	32	CODE
LOW	docs/source/conf.py	32	CODE
LOW	docs/source/conf.py	32	CODE

Hallucination Indicators1 hit · 10 pts

Severity	File	Line	Snippet	Context
CRITICAL	src/formats/java_log.json	192	"line": "[2022-06-01T13:37:36,371] WARN574240[Thread-35] - com.vmware.observability.observer.Observer.ex	CODE

Excessive Try-Catch Wrapping8 hits · 8 pts

Severity	File	Line	Snippet	Context
LOW	test/log2src/python/log_example.py	26	except Exception:	CODE
LOW	docs/screenshots/render.py	184	except Exception as exc:	CODE
LOW	crashd/app.py	130	except Exception as e:	STRING
MEDIUM	crashd/app.py	127	def remove_zip(response):	CODE
LOW	src/tailer/tailer.main.py	259	except Exception as e:	CODE
LOW	src/tailer/tailer.main.py	483	except Exception:	CODE
LOW	src/tailer/tailer.main.py	502	except Exception as e:	CODE
LOW	src/tailer/tailer.main.py	634	except Exception:	CODE

Deep Nesting8 hits · 8 pts

Severity	File	Line	Context
LOW	test/parser_debugger.py	97	CODE
LOW	docs/screenshots/render.py	342	CODE
LOW	docs/screenshots/render.py	56	CODE
LOW	src/format2csv.py	7	CODE
LOW	src/tailer/tailer.main.py	97	CODE
LOW	src/tailer/tailer.main.py	220	CODE
LOW	src/tailer/tailer.main.py	486	CODE
LOW	src/tailer/tailer.main.py	626	CODE

Self-Referential Comments3 hits · 7 pts

Severity	File	Line	Snippet	Context
MEDIUM	test/test_sql.sh	698	# Create a dummy database for the next couple of tests to consume.	COMMENT
MEDIUM	docs/source/conf.py	6	# This file is execfile()d with the current directory set to its containing dir.	COMMENT
MEDIUM	crashd/app.py	116	# Create a new zip file	STRING

Verbosity Indicators3 hits · 4 pts

Severity	File	Line	Snippet	Context
LOW	src/fmtlib/fmt/format-inl.h	1238	// Step 1: integer promotion & Schubfach multiplier calculation.	COMMENT
LOW	src/fmtlib/fmt/format-inl.h	1293	// Step 2: Try larger divisor; remove trailing zeros if necessary.	COMMENT
LOW	src/fmtlib/fmt/format-inl.h	1325	// Step 3: Find the significand with the smaller divisor.	COMMENT

Structural Annotation Overuse3 hits · 4 pts

Severity	File	Line	Snippet	Context
LOW	src/fmtlib/fmt/format-inl.h	1238	// Step 1: integer promotion & Schubfach multiplier calculation.	COMMENT
LOW	src/fmtlib/fmt/format-inl.h	1293	// Step 2: Try larger divisor; remove trailing zeros if necessary.	COMMENT
LOW	src/fmtlib/fmt/format-inl.h	1325	// Step 3: Find the significand with the smaller divisor.	COMMENT

Hyper-Verbose Identifiers4 hits · 4 pts

Severity	File	Line	Snippet	Context
LOW	src/tailer/tailer.main.py	184	def set_client_path_state_error(self, cps: ClientPathState, op: str, error_msg: Optional[str]):	CODE
LOW	src/tailer/tailer.main.py	486	def handle_load_preview_request(self, path: str, preview_id: int):	CODE
LOW	src/tailer/tailer.main.py	557	def handle_complete_path_request(self, path: str):	CODE
LOW	src/static-files/assets/js/lnav-markdown-magic.js	1	function updateElementFromResponse(element, result) {	CODE

Redundant / Tautological Comments5 hits · 4 pts

Severity	File	Line	Snippet	Context
LOW⚡	crashd/app.py	49	# Check if header 'lnav-secret' exists and has the correct value	STRING
LOW⚡	crashd/app.py	51	# Check if content length is provided	STRING
LOW⚡	crashd/app.py	58	# Check if content length is zero	STRING
LOW⚡	crashd/app.py	62	# Check if content length exceeds 10MB	STRING
LOW	crashd/app.py	105	# Check if header 'lnav-secret' exists and has the correct value for downloading	STRING

Example Usage Blocks1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	docs/screenshots/generate.sh	15	# Usage:	COMMENT

AI Structural Patterns1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	docs/screenshots/render.py	506		CODE

Modern Structural Boilerplate1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	docs/source/_ext/lnavlexer.py	2	__all__ = ['LnavCommandLexer']	CODE

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings