Repository Analysis

subframe7536/maple-font

Maple Mono: Open source monospace font with round corner, ligatures and Nerd-Font icons for IDE and terminal, fine-grained customization options. 带连字和控制台图标的圆角等宽字体，中英文宽度完美2:1，细粒度的自定义选项

6.8 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of subframe7536/maple-font, a Python project with 27,273 GitHub stars. SynthScan v2.0 examined 14,109 lines of code across 111 source files, recording 65 pattern matches distributed across 9 syntactic categories. The overall adjusted score of 6.8 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).

6.8

Adjusted Score

6.8

Raw Score

100%

Time Factor

2026-07-13

Last Push

27.3K

Stars

Python

Language

14.1K

Lines of Code

111

Files

Pattern Hits

2026-07-14

Scan Date

0.02

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 54

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 65 distinct pattern matches across 9 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.

Decorative Section Separators8 hits · 32 pts

Severity	File	Line	Snippet	Context
MEDIUM	build.py	49	# =========================================================================================	COMMENT
MEDIUM	build.py	79	# =========================================================================================	COMMENT
MEDIUM	build.py	310	# =========================================================================================	COMMENT
MEDIUM⚡	source/py/feature/calt/tag.py	269	# =========================================================	COMMENT
MEDIUM⚡	source/py/feature/calt/tag.py	271	# ---------------------------------------------------------	COMMENT
MEDIUM⚡	source/py/feature/calt/tag.py	280	# =========================================================	COMMENT
MEDIUM⚡	source/py/feature/calt/tag.py	284	# ---------------------------------------------------------	COMMENT
MEDIUM⚡	source/py/feature/calt/tag.py	291	# =========================================================	COMMENT

Deep Nesting18 hits · 18 pts

Severity	File	Line	Context
LOW	build.py	1479	CODE
LOW	build.py	1710	CODE
LOW	build.py	436	CODE
LOW	task.py	7	CODE
LOW	source/py/in_browser.py	19	CODE
LOW	source/py/in_browser.py	90	CODE
LOW	source/py/utils.py	263	CODE
LOW	source/py/utils.py	291	CODE
LOW	source/py/freeze.py	20	CODE
LOW	source/py/task/merge_font/__init__.py	192	CODE
LOW	source/py/task/merge_font/utils.py	298	CODE
LOW	source/py/task/merge_font/merger.py	15	CODE
LOW	source/py/feature/__init__.py	48	CODE
LOW	source/py/feature/__init__.py	143	CODE
LOW	source/py/feature/__init__.py	231	CODE
LOW	source/py/feature/ast.py	544	CODE
LOW	source/py/feature/ast.py	60	CODE
LOW	source/py/feature/calt/tag.py	133	CODE

Over-Commented Block15 hits · 15 pts

Severity	File	Line	Snippet	Context
LOW	build.py	381	# if not, will use font-patcher to generate fonts	COMMENT
LOW	build.py	841	# self.__instantiate_cn_base(	COMMENT
LOW	build.py	881		COMMENT
LOW	build.py	921		COMMENT
LOW	build.py	941	# if feature_record.FeatureTag in config:	COMMENT
LOW	requirements.txt	1	# This file was autogenerated by uv via the following command:	COMMENT
LOW	requirements.txt	21	# xattr	COMMENT
LOW	requirements.txt	41	# via foundrytools	COMMENT
LOW	requirements.txt	61	# dehinter	COMMENT
LOW	requirements.txt	81	lxml==6.0.2	COMMENT
LOW	requirements.txt	101	# via rich	COMMENT
LOW	requirements.txt	121	# via foundrytools	COMMENT
LOW	source/py/utils.py	541	# - NameID1 should be the family name	COMMENT
LOW	source/py/feature/calt/tag.py	281	# Mark annotation in Xcode	COMMENT
LOW	source/py/feature/ss/ss03.py	1	from source.py.feature import ast	COMMENT

Excessive Try-Catch Wrapping12 hits · 13 pts

Severity	File	Line	Snippet	Context
LOW	build.py	74	except Exception as e:	CODE
LOW	build.py	474	except Exception as e:	CODE
LOW	build.py	700	except Exception as e:	CODE
LOW	build.py	1504	except Exception as e:	CODE
LOW	source/py/utils.py	119	except Exception as e:	CODE
LOW	source/py/utils.py	130	except Exception as e:	CODE
LOW	source/py/utils.py	370	except Exception as e:	CODE
MEDIUM	source/py/utils.py	371	print(f"Error merging fonts: {str(e)}")	CODE
LOW	source/py/task/merge_font/__init__.py	299	except Exception as e:	CODE
LOW	source/py/task/merge_font/__init__.py	312	except Exception as e:	CODE
LOW	source/py/task/merge_font/utils.py	197	except Exception as e:	CODE
LOW	source/py/task/merge_font/merger.py	84	except Exception:	CODE

Hyper-Verbose Identifiers8 hits · 8 pts

Severity	File	Line	Snippet	Context
LOW	build.py	628	def get_valid_glyph_width_list(self, cn=False):	CODE
LOW	build.py	1193	def build_nf_by_prebuild_nerd_font(	CODE
LOW	source/py/transform.py	260	def change_glyph_width_or_scale(	CODE
LOW	source/py/task/release.py	52	def update_build_script_version(script_path: str, tag: str):	CODE
LOW	source/py/task/nerdfont.py	89	def get_nerd_font_patcher_args(mono: bool, propo: bool = False):	CODE
LOW	source/py/task/merge_font/__init__.py	40	def copy_to_tmp_with_ascii_name(src_path: str, tmp_dir: str) -> str:	CODE
LOW	source/py/feature/__init__.py	134	def generate_fea_string_cn_only():	CODE
LOW	source/py/feature/__init__.py	217	def get_cv_italic_version_info() -> dict[str, dict[str, str]]:	CODE

Docstring Block Structure1 hit · 5 pts

Severity	File	Line	Snippet	Context
HIGH	source/py/feature/ast.py	426	Generate substitution lines for target ligature. Default ``target`` is ``gly(source)`` Default ``lookup_n	STRING

Cross-Language Confusion1 hit · 2 pts

Severity	File	Line	Snippet	Context
HIGH	source/py/task/merge_font/merger.py	31	{"path": "/path/to/override2.ttf", "width_scale": null}	STRING

Redundant / Tautological Comments1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	build.py	1257	# Check if the glyph 'nonmarkingreturn' exists in the font	COMMENT

Modern Structural Boilerplate1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	source/py/task/fea.py	36	def update_schema(file_path: str, features: dict[str, str]) -> None:	CODE