:globe_with_meridians: Jekyll is a blog-aware static site generator in Ruby
This report summarizes scanner evidence for jekyll/jekyll, a Ruby project with 51,706 GitHub stars. SynthScan examined 49,201 lines of code across 480 source files, recording 147 pattern matches distributed across 9 syntactic categories. The legacy adjusted pattern signal is 4.8 (Low pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Can maintainers explain intent, assumptions, and trade-offs? 113 finding(s).
Are imports declared and package/API names verified? 15 finding(s).
Are wrappers, guards, and repeated structures necessary? 46 finding(s).
Which changes need focused human review? 147 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 147 distinct pattern matches across 9 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. 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 configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | .rubocop.yml | 1 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 7 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM⚡ | .rubocop.yml | 38 | # ======================= | COMMENT |
| MEDIUM⚡ | .rubocop.yml | 41 | # ---------------------------------------- | COMMENT |
| MEDIUM⚡ | .rubocop.yml | 50 | # ---------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 97 | # ---------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 210 | # ---------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 248 | # ---------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 321 | # ---------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 335 | # ---------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 380 | # ---------------------------------------- | COMMENT |
| MEDIUM | .rubocop.yml | 395 | # ---------------------------------------- | COMMENT |
| MEDIUM | benchmark/conditional_liquid.rb | 76 | # ------------------------------------------------------------------------ | COMMENT |
| MEDIUM | benchmark/conditional_liquid.rb | 92 | # ------------------------------------------------------------------------ | COMMENT |
| MEDIUM | rake/task_utils/rubocop_config_formatter.rb | 33 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | rake/task_utils/rubocop_config_formatter.rb | 39 | # ----------------------------------------------------------------------------- | COMMENT |
| MEDIUM | rake/task_utils/rubocop_config_formatter.rb | 60 | # ======================= | COMMENT |
| MEDIUM | docs/_data/jekyll_filters.yml | 2 | # --------------------------------------------------------------------------------------- | COMMENT |
| MEDIUM | docs/_data/jekyll_filters.yml | 17 | # --------------------------------------------------------------------------------------- | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | .rubocop_todo.yml | 1 | # This configuration was generated by | COMMENT |
| LOW | benchmark/schwartzian_transform.rb | 1 | #!/usr/bin/env ruby | COMMENT |
| LOW | test/helper.rb | 101 | # file `test/source/symlink-test/symlinked-file-outside-source` but errors out since the linked | COMMENT |
| LOW | docs/_data/jekyll_filters.yml | 1 | # | COMMENT |
| LOW | rubocop/jekyll/assert_equal_literal_actual.rb | 1 | # frozen_string_literal: true | COMMENT |
| LOW | .github/workflows/codeql.yml | 41 | # Prefix the list here with "+" to use these queries and those in the config file. | COMMENT |
| LOW | .github/workflows/spelling.yml | 1 | name: Spell Check | COMMENT |
| LOW | .github/workflows/spelling.yml | 21 | # | COMMENT |
| LOW | lib/jekyll.rb | 141 | COMMENT | |
| LOW | lib/site_template/_config.yml | 1 | # Welcome to Jekyll! | COMMENT |
| LOW | lib/site_template/_config.yml | 41 | # | COMMENT |
| LOW | lib/jekyll/convertible.rb | 1 | # frozen_string_literal: true | COMMENT |
| LOW | lib/jekyll/static_file.rb | 141 | # and additionally removes any multiple periods in the string. | COMMENT |
| LOW | lib/jekyll/filters.rb | 41 | ).convert(input) | COMMENT |
| LOW | lib/jekyll/filters.rb | 61 | # See Utils.slugify for more detail. | COMMENT |
| LOW | lib/jekyll/filters.rb | 81 | # CGI escape a string for use in a URL. Replaces any special characters | COMMENT |
| LOW | lib/jekyll/filters.rb | 101 | # | COMMENT |
| LOW | lib/jekyll/filters.rb | 141 | # word "and" for the last one. | COMMENT |
| LOW | lib/jekyll/filters.rb | 161 | "#{array[0...-1].join(", ")}, #{connector} #{array[-1]}" | COMMENT |
| LOW | lib/jekyll/filters.rb | 221 | end | COMMENT |
| LOW | lib/jekyll/filters.rb | 281 | COMMENT | |
| LOW | lib/jekyll/log_adapter.rb | 61 | # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. | COMMENT |
| LOW | lib/jekyll/log_adapter.rb | 81 | # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc. | COMMENT |
| LOW | lib/jekyll/log_adapter.rb | 121 | # | COMMENT |
| LOW | lib/jekyll/excerpt.rb | 101 | # the first two new lines: | COMMENT |
| LOW | lib/jekyll/excerpt.rb | 121 | # | COMMENT |
| LOW | lib/jekyll/document.rb | 21 | COMMENT | |
| LOW | lib/jekyll/document.rb | 81 | COMMENT | |
| LOW | lib/jekyll/document.rb | 141 | # The "cleaned" relative path is the relative path without the extname | COMMENT |
| LOW | lib/jekyll/document.rb | 321 | COMMENT | |
| LOW | lib/jekyll/path_manager.rb | 1 | # frozen_string_literal: true | COMMENT |
| LOW | lib/jekyll/frontmatter_defaults.rb | 141 | collections_dir = @site.config["collections_dir"] | COMMENT |
| LOW | lib/jekyll/frontmatter_defaults.rb | 161 | end | COMMENT |
| LOW | lib/jekyll/plugin.rb | 41 | # set the priority. | COMMENT |
| LOW | lib/jekyll/collection.rb | 121 | end | COMMENT |
| LOW | lib/jekyll/collection.rb | 161 | COMMENT | |
| LOW | lib/jekyll/reader.rb | 81 | COMMENT | |
| LOW | lib/jekyll/reader.rb | 121 | # Retrieve all the static files from the current directory, | COMMENT |
| LOW | lib/jekyll/url.rb | 1 | # frozen_string_literal: true | COMMENT |
| LOW | lib/jekyll/url.rb | 121 | end | COMMENT |
| LOW | lib/jekyll/url.rb | 141 | # segment = *pchar | COMMENT |
| LOW | lib/jekyll/utils.rb | 21 | def titleize_slug(slug) | COMMENT |
| LOW | lib/jekyll/utils.rb | 121 | end | COMMENT |
| LOW | lib/jekyll/utils.rb | 161 | # cased - whether to replace all uppercase letters with their | COMMENT |
| LOW | lib/jekyll/utils.rb | 181 | # | COMMENT |
| LOW | lib/jekyll/utils.rb | 221 | slug.downcase! unless cased | COMMENT |
| LOW | lib/jekyll/utils.rb | 241 | # # => "/:basename/" | COMMENT |
| LOW | lib/jekyll/utils.rb | 261 | else | COMMENT |
| LOW | lib/jekyll/utils.rb | 281 | # # => ["path/.", "path/..", "path/file1"] | COMMENT |
| LOW | lib/jekyll/site.rb | 241 | COMMENT | |
| LOW | lib/jekyll/site.rb | 281 | @site_data ||= (config["data"] || data) | COMMENT |
| LOW | lib/jekyll/filters/date_filters.rb | 1 | # frozen_string_literal: true | COMMENT |
| LOW | lib/jekyll/filters/date_filters.rb | 21 | # Format a date in long format e.g. "27 January 2011". | COMMENT |
| LOW | lib/jekyll/filters/date_filters.rb | 41 | # | COMMENT |
| LOW | lib/jekyll/drops/drop.rb | 101 | list.reject! { |item| item.end_with?("=") } | COMMENT |
| LOW | lib/jekyll/drops/drop.rb | 221 | # Returns a Hash ready for JSON generation. | COMMENT |
| LOW | lib/jekyll/converters/markdown.rb | 61 | # | COMMENT |
| LOW | lib/jekyll/utils/internet.rb | 1 | # frozen_string_literal: true | COMMENT |
| LOW | lib/jekyll/commands/new.rb | 61 | # Internal: Gets the filename of the sample post to be created | COMMENT |
| LOW | lib/jekyll/readers/post_reader.rb | 21 | # Read all the files in <source>/<dir>/_posts and create a new Document | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | lib/jekyll/plugin_manager.rb | 7 | # Create an instance of this class. | COMMENT |
| MEDIUM | lib/jekyll/document.rb | 34 | # Create a new Document. | COMMENT |
| MEDIUM | lib/jekyll/document.rb | 143 | # This method is useful when building the URL of the document. | COMMENT |
| MEDIUM | lib/jekyll/document.rb | 315 | # Create a Liquid-understandable version of this Document. | COMMENT |
| MEDIUM | lib/jekyll/frontmatter_defaults.rb | 4 | # This class handles custom defaults for YAML frontmatter settings. | COMMENT |
| MEDIUM | lib/jekyll/collection.rb | 8 | # Create a new Collection. | COMMENT |
| MEDIUM | lib/jekyll/reader.rb | 174 | # Create a single PostReader instance to retrieve drafts and posts from all valid | COMMENT |
| MEDIUM | lib/jekyll/command.rb | 36 | # Create a full Jekyll configuration with the options passed in as overrides | COMMENT |
| MEDIUM | lib/jekyll/drops/drop.rb | 106 | # Create a new Drop | COMMENT |
| MEDIUM | lib/jekyll/commands/build.rb | 7 | # Create the Mercenary command for the Jekyll CLI for this Command | COMMENT |
| MEDIUM | lib/jekyll/commands/serve/servlet.rb | 8 | # This class is used to determine if the Servlet should modify a served file | COMMENT |
| MEDIUM | lib/jekyll/readers/page_reader.rb | 13 | # Create a new `Jekyll::Page` object for each entry in a given array. | COMMENT |
| MEDIUM | lib/jekyll/readers/static_file_reader.rb | 13 | # Create a new StaticFile object for every entry in a given list of basenames. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | benchmark/schwartzian_transform.rb | 33 | def sort_by_property_directly(docs, meta_key) | CODE |
| LOW | test/test_document.rb | 18 | def setup_document_with_dates(filename) | CODE |
| LOW | test/test_tag_highlight.rb | 6 | def render_content_with_text_to_highlight(code) | CODE |
| LOW | test/test_tag_highlight.rb | 29 | def highlight_block_with_markup(markup) | CODE |
| LOW | test/test_static_file.rb | 24 | def setup_static_file_with_collection(base, dir, name, metadata) | CODE |
| LOW | test/test_static_file.rb | 31 | def setup_static_file_with_defaults(base, dir, name, defaults) | CODE |
| LOW | test/test_tag_link.rb | 6 | def render_content_with_collection(content, collection_label) | CODE |
| LOW | test/test_theme_assets_reader.rb | 14 | def assert_file_with_relative_path(haystack, relative_path) | CODE |
| LOW | test/test_theme_assets_reader.rb | 20 | def refute_file_with_relative_path(haystack, relative_path) | CODE |
| LOW | rubocop/jekyll/assert_equal_literal_actual.rb | 111 | def replace_based_on_line_length(first_expression, second_expression) | CODE |
| LOW | rubocop/jekyll/assert_equal_literal_actual.rb | 124 | def replace_hash_with_variable(first_expression, second_expression) | CODE |
| LOW | rubocop/jekyll/assert_equal_literal_actual.rb | 136 | def replace_array_with_variable(first_expression, second_expression) | CODE |
| LOW | lib/jekyll/filters.rb | 400 | def compare_property_vs_target(property, target) | CODE |
| LOW | lib/jekyll/external.rb | 54 | def require_with_graceful_fail(names) | CODE |
| LOW | lib/jekyll/excerpt.rb | 167 | def extract_markdown_link_reference_definitions(head, tail) | CODE |
| LOW | lib/jekyll/reader.rb | 200 | def conditionally_generate_entry(entry_path, container, reader) | CODE |
| LOW | lib/jekyll/utils.rb | 70 | def pluralized_array_from_hash(hash, singular_key, plural_key) | CODE |
| LOW | lib/jekyll/utils.rb | 349 | def replace_character_sequence_with_hyphen(string, mode: "default") | CODE |
| LOW | lib/jekyll/renderer.rb | 200 | def add_regenerator_dependencies(layout) | CODE |
| LOW | lib/jekyll/command.rb | 41 | def configuration_from_options(options) | CODE |
| LOW | lib/jekyll/command.rb | 90 | def process_with_graceful_fail(cmd, options, *klass) | CODE |
| LOW | lib/jekyll/configuration.rb | 100 | def get_config_value_with_override(config_key, override) | CODE |
| LOW | lib/jekyll/tags/highlight.rb | 93 | def line_highlighter_formatter(formatter) | CODE |
| LOW | lib/jekyll/tags/include.rb | 131 | def add_include_to_dependency(site, path, context) | CODE |
| LOW | lib/jekyll/tags/include.rb | 236 | def add_include_to_dependency(inclusion, context) | CODE |
| LOW | lib/jekyll/commands/doctor.rb | 60 | def deprecated_relative_permalinks(site) | CODE |
| LOW | lib/jekyll/commands/serve/servlet.rb | 187 | def conditionally_inject_charset(res) | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | benchmark/conditional_liquid.rb | 15 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce auctor libero at | CODE |
| LOW | benchmark/conditional_liquid.rb | 15 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce auctor libero at | CODE |
| LOW⚡ | benchmark/conditional_liquid.rb | 27 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce auctor libero at | CODE |
| LOW⚡ | benchmark/conditional_liquid.rb | 27 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce auctor libero at | CODE |
| LOW⚡ | benchmark/conditional_liquid.rb | 32 | ligula, {% if author == "Jane Doe" %} at finibus eros laoreet id. {% else %} | CODE |
| LOW⚡ | benchmark/conditional_liquid.rb | 40 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce auctor libero at | CODE |
| LOW⚡ | benchmark/conditional_liquid.rb | 40 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce auctor libero at | CODE |
| LOW | benchmark/conditional_liquid.rb | 62 | "author" => "John Doe", | CODE |
| LOW | test/test_page_without_a_file.rb | 37 | %w(lorem ipsum) => "lorem/ipsum", | CODE |
| LOW | test/test_page_without_a_file.rb | 117 | "author" => "John Doe", | CODE |
| LOW | test/test_page_without_a_file.rb | 127 | assert_equal "John Doe", @page.data["author"] | CODE |
| LOW | test/test_page_without_a_file.rb | 157 | @page.content = "Lorem ipsum dolor sit amet" | CODE |
| LOW | test/test_page_without_a_file.rb | 157 | @page.content = "Lorem ipsum dolor sit amet" | CODE |
| LOW | lib/theme_template/example/index.html | 5 | Lorem ipsum dolor sit amet, quo id prima corrumpit pertinacia, id ius dolor dolores, an veri pertinax explicari mea. Aga | CODE |
| LOW | lib/theme_template/example/index.html | 5 | Lorem ipsum dolor sit amet, quo id prima corrumpit pertinacia, id ius dolor dolores, an veri pertinax explicari mea. Aga | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | lib/jekyll/regenerator.rb | 133 | # Check if metadata has been disabled | COMMENT |
| LOW | lib/jekyll/entry_filter.rb | 37 | # Check if the current entry is explicitly included and cache the result | COMMENT |
| LOW⚡ | lib/jekyll/entry_filter.rb | 80 | # Check if a file is a symlink. | COMMENT |
| LOW⚡ | lib/jekyll/entry_filter.rb | 89 | # Check if given path is outside of current site's configured source directory. | COMMENT |
| LOW⚡ | lib/jekyll/entry_filter.rb | 95 | # Check if an entry matches a specific pattern. | COMMENT |
| LOW | lib/jekyll/excerpt.rb | 54 | # Check if excerpt includes a string | COMMENT |
| LOW | lib/jekyll/cache.rb | 120 | # Check if `key` already exists in this cache | COMMENT |
| LOW | lib/jekyll/drops/drop.rb | 174 | # Check if key exists in Drop | COMMENT |
| LOW | lib/jekyll/commands/serve.rb | 302 | # Add SSL to the stack if the user triggers --enable-ssl and they | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | lib/jekyll/commands/serve.rb | 269 | # Keep in our area with a thread or detach the server as requested | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | docs/_docs/installation/macos.md | 36 | ### Step 1: Install Homebrew | COMMENT |
| LOW | docs/_docs/installation/macos.md | 44 | ### Step 2: Install chruby and the latest Ruby with ruby-install | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | lib/jekyll/filters.rb | 380 | # We also utilize the Schwartzian transform to make this more efficient. | COMMENT |