Repository Analysis

fastfetch-cli/fastfetch

A maintained, feature-rich and performance oriented, neofetch like system information tool.

2.5 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of fastfetch-cli/fastfetch, a C project with 23,712 GitHub stars. SynthScan v2.0 examined 147,908 lines of code across 1408 source files, recording 437 pattern matches distributed across 5 syntactic categories. The overall adjusted score of 2.5 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).

2.5
Adjusted Score
2.5
Raw Score
100%
Time Factor
2026-07-14
Last Push
23.7K
Stars
C
Language
147.9K
Lines of Code
1.4K
Files
437
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 0HIGH 2MEDIUM 1LOW 434

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 437 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 Block430 hits · 348 pts
SeverityFileLineSnippetContext
LOWsrc/fastfetch.c1#include "fastfetch.h"COMMENT
LOWsrc/fastfetch.h1#pragma onceCOMMENT
LOWsrc/common/time.h1#pragma onceCOMMENT
LOWsrc/common/arrutil.h1#pragma onceCOMMENT
LOWsrc/common/library.h1#pragma onceCOMMENT
LOWsrc/common/color.h1#pragma onceCOMMENT
LOWsrc/common/color.h21#define FF_COLOR_FG_DEFAULT "39"COMMENT
LOWsrc/common/color.h41COMMENT
LOWsrc/common/textModifier.h1#pragma onceCOMMENT
LOWsrc/common/FFstrbuf.h1#pragma onceCOMMENT
LOWsrc/common/mallocHelper.h1#pragma onceCOMMENT
LOWsrc/common/io.h1#pragma onceCOMMENT
LOWsrc/common/io.h21 #define FF_INVALID_FD (-1)COMMENT
LOWsrc/common/lua.h1#pragma onceCOMMENT
LOWsrc/common/strutil.h1#pragma onceCOMMENT
LOWsrc/common/impl/tracer.c1// DON'T CALL ANY FASTFETCH FUNCTION IN THIS FILE (to avoid recursion when -finstrument-functions is enabled)COMMENT
LOWsrc/common/impl/init.c1#include "fastfetch.h"COMMENT
LOWsrc/common/impl/init.c201#endifCOMMENT
LOWsrc/common/impl/init.c221 "dconf\n"COMMENT
LOWsrc/common/impl/init.c241#if FF_HAVE_SQLITE3COMMENT
LOWsrc/common/impl/init.c261#endifCOMMENT
LOWsrc/common/impl/init.c281 "System yyjson\n"COMMENT
LOWsrc/common/impl/smbios.c141}COMMENT
LOWsrc/common/impl/binary_apple.c1#include "common/binary.h"COMMENT
LOWsrc/common/impl/netif_bsd.c1#include "common/netif.h"COMMENT
LOWsrc/common/impl/processing_linux.c1#include "fastfetch.h"COMMENT
LOWsrc/common/impl/processing_linux.c21 #include <sys/user.h>COMMENT
LOWsrc/common/impl/jsonconfig.c1#include "fastfetch.h"COMMENT
LOWsrc/common/impl/io_unix.c1#include "common/io.h"COMMENT
LOWsrc/common/impl/library.c1#include "fastfetch.h"COMMENT
LOWsrc/common/impl/FFPlatform_unix.c1#include "FFPlatform_private.h"COMMENT
LOWsrc/common/impl/netif_apple.c1#include "common/netif.h"COMMENT
LOWsrc/common/impl/FFPlatform_windows.c1#include "FFPlatform_private.h"COMMENT
LOWsrc/common/impl/processing_windows.c1#include "fastfetch.h"COMMENT
LOWsrc/common/impl/networking_linux.c1#include "fastfetch.h"COMMENT
LOWsrc/common/windows/nt.h261COMMENT
LOWsrc/common/windows/nt.h301 // Minimum size of a large page on the system, in bytes.COMMENT
LOWsrc/common/windows/nt.h341COMMENT
LOWsrc/common/windows/nt.h361 //COMMENT
LOWsrc/common/windows/nt.h381 // N.B. This field must be accessed via the RtlGetNtProductType API forCOMMENT
LOWsrc/common/windows/nt.h401 //COMMENT
LOWsrc/common/windows/nt.h441COMMENT
LOWsrc/common/windows/nt.h481 //COMMENT
LOWsrc/common/windows/nt.h501 // can use to see if they need to probe handles.COMMENT
LOWsrc/common/windows/nt.h521COMMENT
LOWsrc/common/windows/nt.h561 //COMMENT
LOWsrc/common/windows/nt.h801 HANDLE Mutant;COMMENT
LOWsrc/common/windows/nt.h821 PVOID SubSystemData;COMMENT
LOWsrc/common/windows/nt.h881 // Pointer to the API Set Schema.COMMENT
LOWsrc/common/windows/nt.h901 // Reserved for CSRSS.COMMENT
LOWsrc/common/windows/nt.h921 // Pointer to the OEM code page data.COMMENT
LOWsrc/common/windows/nt.h981COMMENT
LOWsrc/common/windows/nt.h1001COMMENT
LOWsrc/common/windows/nt.h1021 // Pointer to the system GDI shared handle table.COMMENT
LOWsrc/common/windows/nt.h1041 // Major version of the operating system.COMMENT
LOWsrc/common/windows/nt.h1061 // Platform ID of the operating system.COMMENT
LOWsrc/common/windows/nt.h1081} PEB_FULL, *PPEB_FULL;COMMENT
LOWsrc/common/windows/nt.h1101 //COMMENT
LOWsrc/common/windows/nt.h1121 //COMMENT
LOWsrc/common/windows/perflib_.h1#pragma onceCOMMENT
370 more matches not shown…
Synthetic Comment Markers2 hits · 15 pts
SeverityFileLineSnippetContext
HIGHsrc/3rdparty/display-library/adl_structures.h3755///\brief Structure Containing All Generic LED configuration for user requested LED pattern. The driver will apply the cCOMMENT
HIGHsrc/3rdparty/display-library/adl_structures.h3772///\brief Structure Containing All custom grid pattern LED configuration for user requested LED grid pattern. The driverCOMMENT
Excessive Try-Catch Wrapping3 hits · 4 pts
SeverityFileLineSnippetContext
LOWcompletions/fastfetch.zsh74 except Exception:CODE
LOWcompletions/fastfetch.bash106 except Exception:CODE
MEDIUMcompletions/fastfetch.bash86def main(current):CODE
Redundant / Tautological Comments1 hit · 2 pts
SeverityFileLineSnippetContext
LOWcompletions/fastfetch.bash8 # Check if Python is availableCOMMENT
Deep Nesting1 hit · 1 pts
SeverityFileLineSnippetContext
LOWscripts/gen-man.py183CODE