Public recordModerate
Software health reportschema 0.26.0 · metrics 1.13.0 · 2026-07-21 23:44 UTC
prawnpdf / ttfunk
Font Metrics Parser for Prawn
prawnpdf/ttfunk holds a health index of 56 out of 100, placing it in the Moderate band. It scores highest on Engineering Quality (80/100) and lowest on Vitality (28/100). It was last updated 94 days ago. 3 contributors account for most of its recent work.
56
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At risk ceiling of 49. AI Readiness sits outside the overall score.
56
Excellent85-100Exemplary; meets essentially all checked criteria
Good70-84Healthy; minor gaps
Moderate50-69Acceptable with notable gaps; review recommended
At risk30-49Significant weaknesses; adoption warrants caution
Critical1-29Severe problems (abandoned, single-maintainer, no hygiene)
Score profile
Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.
Ownership
PrawnPDFOrganization
12 followers12 public repossince Feb 2012
This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish |
|---|---|---|---|---|---|
| RubyGems | ttfunk | 1.8.0 | - | 18 | 868 days ago |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
28
Development activity
22Critical
How it's scored
| 9.9/36 | Push recency — last push 94 days ago |
| 2.1/36 | Commit cadence — 3/52 weeks with commits |
| 8.6/18 | Commit volume — 8 commits in the last year |
| 1/10 | OpenSSF Scorecard: Maintained — 0 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 1 |
Inputs used
| commits_last_year | 8 |
| human_commit_share | 1 |
| days_since_last_push | 94 |
| active_weeks_last_year | 3 |
Release discipline
36At risk
How it's scored
| 27/27 | Ships releases — 3 releases published |
| 0/36 | Release recency — latest release 3,419 days ago |
| 5.4/27 | Release cadence — a release every ~462.6 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 3 |
| latest_release_tag | 1.5.0 |
| releases_from_tags | no |
| days_since_latest_release | 3,419 |
| mean_days_between_releases | 462.6 |
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
64
Popularity & adoption
60Moderate
How it's scored
| 34.9/60 | Stars — 143 stars |
| 16.4/25 | Forks — 94 forks |
| 8.4/15 | Watchers — 33 watchers |
Inputs used
| forks | 94 |
| stars | 143 |
| watchers | 33 |
| growth_state | organic |
| growth_factor_pct | 100 |
Community health
44At risk
How it's scored
| 22.5/22.5 | README |
| 16.9/22.5 | License — license file present, not a recognized license |
| 0/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| has_pull_request_template | no |
Ecosystem adoption (downloads)
100Excellent
How it's scored
| 80/80 | Total downloads — 157,597,772 downloads all-time across rubygems |
| 0/20 | Registry dependents — not reported by this ecosystem |
Inputs used
| packages | ttfunk |
| dependents | — |
| ecosystems | rubygems |
| total_downloads | 157,597,772 |
| monthly_downloads | — |
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
67
How it's scored
| 36/54 | Bus factor — 3 contributor(s) cover half of all commits |
| 15.9/22.5 | Commit distribution — top contributor authored 29% of commits |
| 13.5/13.5 | Contributor breadth — 29 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 13 contributing companies or organizations |
Inputs used
| bus_factor | 3 |
| contributors_sampled | 29 |
| top_contributor_share | 0.292 |
Issue & PR responsiveness
64Moderate
How it's scored
| 35.7/46.8 | Issue resolution — 76% of issues closed |
| 26.3/38.3 | PR acceptance — 53/77 decided PRs merged |
| 1.5/15 | OpenSSF Scorecard: Code-Review — Found 3/28 approved changesets -- score normalized to 1 |
Inputs used
| merged_prs | 53 |
| open_issues | 9 |
| closed_issues | 29 |
| issue_closed_ratio | 0.763 |
| closed_unmerged_prs | 24 |
Ownership & stewardship
58Moderate
How it's scored
| 30/30 | Ownership backing — organization-owned |
| 0/20 | Verified domain |
| 8/25 | Owner reach — 12 followers of prawnpdf |
| 20.1/25 | Track record — 12 public repos, account ~14 yr old |
Inputs used
| followers | 12 |
| owner_type | Organization |
| is_verified | — |
| owner_login | prawnpdf |
| public_repos | 12 |
| account_age_days | 5,270 |
Package maintenance
69Moderate
How it's scored
| 25/25 | Published & resolvable — 1 package(s) on rubygems |
| 4/35 | Publish recency — latest publish 868 days ago |
| 20/20 | Version history — 18 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | ttfunk |
| ecosystems | rubygems |
| any_deprecated | no |
| min_days_since_publish | 868 |
Engineering Quality
Are baseline engineering and documentation practices in place?
80
Engineering practices
84Good
How it's scored
| 24/24 | CI workflows — 1 workflow(s) |
| 24/24 | Tests present |
| 16/16 | Linter config — .rubocop.yml |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 20/20 | OpenSSF Scorecard: CI-Tests — 5 out of 5 merged PRs checked by a CI test -- score normalized to 10 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | yes |
| has_precommit_config | no |
Documentation
75Good
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 15/15 | Documentation / homepage site — http://prawnpdf.org |
| 10/10 | Repository description |
| 10/10 | Topics — 6 topics |
| 10/10 | Wiki |
Inputs used
| topics | ruby, ttf, fonts, afm, ttc, dfont |
| has_wiki | yes |
| homepage | http://prawnpdf.org |
| has_readme | yes |
| has_docs_dir | no |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
40
Security posture
40At risk
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — no data |
| 2.5/2.5 | CI-Tests — 5 out of 5 merged PRs checked by a CI test -- score normalized to 10 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 0.8/7.5 | Code-Review — Found 3/28 approved changesets -- score normalized to 1 |
| 2.5/2.5 | Contributors — project has 13 contributing companies or organizations |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 0/7.5 | Dependency-Update-Tool — no update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.2/2.5 | License — license file detected |
| 0.8/7.5 | Maintained — 0 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 1 |
| 0/5 | Packaging — no data |
| 0/5 | Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
| 0/5 | SAST — SAST tool is not run on all commits -- score normalized to 0 |
| 0/5 | Security-Policy — security policy file not detected |
| 0/7.5 | Signed-Releases — no data |
| 0/7.5 | Token-Permissions — detected GitHub workflow tokens with excessive permissions |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 15 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 3 |
| scorecard_aggregate | 4 |
Excluded from scoring (no data or not applicable): branch_protection, packaging, signed_releases. Remaining weights renormalized.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score.
31
Agent context & guidance
12Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 11.7/40 | Legible commit history — 22 of 100 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| legible_history_share | 0.22 |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
How it's scored
| 0/18 | One-command bootstrap |
| 22/22 | Automated tests |
| 11/11 | Lint / format config — .rubocop.yml |
| 0/11 | Static type checking |
| 0/10 | Reproducible environment |
| 0/10 | Demonstrated agent practice — no agent-authored commits among the last 100 |
| 0/8 | Automated maintenance — no automated dependency updates observed |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | no |
| typed_language | no |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | yes |
| typecheck_configs | — |
| agent_commit_share | 0 |
| toolchain_manifests | — |
| dependency_bot_commit_share | 0 |
Code legibility for models
55Moderate
How it's scored
| 0/45 | Type-checkable code — Ruby without a type-check config |
| 55/55 | Manageable file sizes — 0/114 source files over 60KB |
Inputs used
| primary_language | Ruby |
| largest_source_bytes | 19,902 |
| source_files_sampled | 114 |
| oversized_source_files | 0 |
Machine-readable interfaces
40At risk
How it's scored
| 0/40 | API schema (OpenAPI/GraphQL/proto) |
| 0/20 | MCP server |
| 40/40 | Runnable examples — examples |
Inputs used
| example_dirs | examples |
| has_mcp_signal | no |
| api_schema_files | — |
Key facts
143GitHub stars
29contributors
8commits, last 12 months
94days since last push
3releases
3bus factor
9open issues
RubyGemspackage ecosystems
Data collection warnings
- No resolved dependencies carried a version and a supported ecosystem
More detail
Star and fork history 143 ★ / 94 ⇿
143Stars
94Forks
3Releases
When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.
Major 0Minor 2Patch 1
Each point covers 17 days.
OpenSSF Scorecard 4.0 / 10
4.0aggregate
Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).
| 10 | Binary-Artifacts | no binaries found in the repo |
| n/a | Branch-Protection | internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md |
| 10 | CI-Tests | 5 out of 5 merged PRs checked by a CI test -- score normalized to 10 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 1 | Code-Review | Found 3/28 approved changesets -- score normalized to 1 |
| 10 | Contributors | project has 13 contributing companies or organizations |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 0 | Dependency-Update-Tool | no update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 9 | License | license file detected |
| 1 | Maintained | 0 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 1 |
| n/a | Packaging | packaging workflow not detected |
| 0 | Pinned-Dependencies | dependency not pinned by hash detected -- score normalized to 0 |
| 0 | SAST | SAST tool is not run on all commits -- score normalized to 0 |
| 0 | Security-Policy | security policy file not detected |
| n/a | Signed-Releases | no releases found |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
All dependencies 2
Full resolved dependency set from the GitHub dependency graph: 0 direct and 2 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| RubyGems | bigdecimal | — | indirect |
| RubyGems | prawn-dev | — | indirect |
Dependency advisories not assessed
Advisory matching could not run for this report: No resolved dependencies carried a version and a supported ecosystem
Raw JSON report machine-readable
{
"data": {
"repo": {
"topics": [
"ruby",
"ttf",
"fonts",
"afm",
"ttc",
"dfont"
],
"is_fork": false,
"size_kb": 13553,
"has_wiki": true,
"homepage": "http://prawnpdf.org",
"languages": {
"Ruby": 335087
},
"pushed_at": "2026-04-18T13:36:11Z",
"created_at": "2008-10-30T22:41:01Z",
"owner_type": "Organization",
"updated_at": "2026-05-30T07:20:47Z",
"description": "Font Metrics Parser for Prawn",
"is_archived": false,
"is_disabled": false,
"license_spdx": null,
"default_branch": "master",
"license_spdx_raw": "NOASSERTION",
"primary_language": "Ruby",
"significant_languages": [
"Ruby"
]
},
"owner": {
"blog": "https://prawnpdf.org/",
"name": "PrawnPDF",
"type": "Organization",
"login": "prawnpdf",
"company": null,
"location": null,
"followers": 12,
"avatar_url": "https://avatars.githubusercontent.com/u/1440292?v=4",
"created_at": "2012-02-15T15:33:36Z",
"is_verified": null,
"public_repos": 12,
"account_age_days": 5270
},
"license": {
"state": "custom",
"spdx_id": null,
"raw_spdx": "NOASSERTION",
"file_present": true,
"scorecard_found": true,
"profile_has_license": true
},
"activity": {
"releases": [
{
"tag": "1.5.0",
"kind": "minor",
"published_at": "2017-03-11T18:18:22Z"
},
{
"tag": "1.4.0",
"kind": "minor",
"published_at": "2014-09-21T11:33:33Z"
},
{
"tag": "1.2.2",
"kind": "patch",
"published_at": "2014-08-29T11:14:43Z"
}
],
"recent_commits": [
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{
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"body": "# By Alexander Mankuta (2) and Thomas Dy (1)\n* fix-maxp-again:\n Add changelog entry\n Add spec for maxp encoding\n Pass correct glyph mapping when encoding maxp",
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"headline": "Merge branch 'fix-maxp-again'",
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{
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{
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},
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{
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"is_bot": false,
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{
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{
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"body_truncated": false,
"is_coding_agent": false
},
{
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"body": "This gem won't be installed by default in Ruby 3.4 so let's get that\nfixed before it becomes a problem.",
"is_bot": false,
"headline": "Add bigdecimal dep",
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},
{
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},
{
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},
{
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"headline": "Bump minimum Ruby",
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"body_truncated": false,
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},
{
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"headline": "Add the current maintainer to authors",
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"body_truncated": false,
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},
{
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"body": null,
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"headline": "Update CI config",
"author_name": "Alexander Mankuta",
"author_login": "pointlessone",
"committed_at": "2024-03-01T14:48:57Z",
"body_truncated": false,
"is_coding_agent": false
},
{
"oid": "8203f379c5b6ce1080b1fb2d0b592c3deb720f1f",
"body": null,
"is_bot": false,
"headline": "Make it easier to develop against different versions of other gems",
"author_name": "Alexander Mankuta",
"author_login": "pointlessone",
"committed_at": "2024-02-15T18:46:28Z",
"body_truncated": false,
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},
{
"oid": "e2e503931534bcd018f1d641eac14c77c852833c",
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"is_bot": false,
"headline": "Fix floats with missing exponent parsing in CFF",
"author_name": "Alexander Mankuta",
"author_login": "pointlessone",
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"body": "Some distros like to repackage gems. Let's make it a little bit easier\nfor them.",
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"body": "The created and modified values in the TTF header is a custom type\ncalled a long date time. A definition can be found here:\nhttps://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6.html\n\nThe bytes are big endian encoded, and the basis is offset from standard\nEpoch. To make these values at all useful in Ruby, they need to be\nproperly decoded from bytes and then offset corrected to get a Time.\nSimilarly, we need to do the reverse transition when encoding.",
"is_bot": false,
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"body": "The method is deprecated but is there for API compatibility.",
"is_bot": false,
"headline": "Keep TTFunk.verify_and_open",
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"body": "c.f. https://github.com/prawnpdf/prawn/pull/1090",
"is_bot": false,
"headline": "Make code more consistent",
"author_name": "Jon Burgess",
"author_login": "jkburges",
"committed_at": "2023-12-14T11:17:39Z",
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"body": "Otherwise, we get a resource leakage, with no way of callers to fix. The can stop certain operations on files later (e.g. delete/move) because there's still an open handle to them from here.",
"is_bot": false,
"headline": "Ensure files opened are also closed",
"author_name": "Jon Burgess",
"author_login": "jkburges",
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"body": "Fix maxp table",
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"headline": "Merge pull request #78 from prawnpdf/fix-maxp-2",
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"body": "Original approach was right but there was an error in field sizes. This\nlead to shift of the following field. One of the fields is\nmaxStackElements which defines stack size for font program. FreeFont\n(also used in Ghostscript) is very strict about stack size. Incorrect\nmaxStackElements value lead to stack overflow in FreeFont. Consequently,\nGhostscript couldn't parse the font and completely discarded it.",
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"headline": "Fix maxp table",
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"headline": "Merge pull request #24 from mustmodify/patch-1",
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"body": "## Corrupted CFF index data\n\nThere was a subtle bug in CFF Index implementation that resulted in\na data corruption. In certain circumstances some items didn't get\nproperly encoded. This happened when items were not previously accessed.\n\nThis resulted, for instance, in missing glyphs. But only someti\n[…]\n` table should\ndirectly index charstrings in the CFF table. Despite this PDF renderers\nstill use CFF encoding to retrieve glyphs. So TTFunk has to discard the\noriginal CFF encoding and supply its own.",
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"headline": "Merge pull request #101 from kbrock/chmod",
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"headline": "Add Ruby 3.1 to CI",
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"oid": "08dcaf420d7f69f50378c4f6c14cfb95cd7a5975",
"body": "…by_bit\n\nOriginal Code takes O(N * M) time\n where N is UNICODE_RANGES size and M is code_map keys size\nImproved Code takes O(MAX(N, M)) time",
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"headline": "Improve Performance of TTFunk::Table::OS2#group_original_code_points_…",
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"body": "I ran a benchmark using Prawn together with a TrueType font handled by\nttfunk which allocated a staggering 107 million objects (compared to 1.6\nmillion objects for the same benchmark using HexaPDF).\n\nA 5min investigation revealed two spots that when optimized reduced the\nnumber to about 5 million ob\n[…]\ncache for the\n mapping.\n\n* TTFunk::SubsetCollection#use:\n\n The inner loop is called many times. By using a while loop instead of\n an iterator with a block we avoid allocating and calling the block.",
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"headline": "Reduce memory allocations and enhance performance",
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"headline": "Update Changelog",
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"body": "prawn-dev helps keep development environment consistent between Prawn\ngems.\n\nWith the updated development dependencies code style is updated as well.",
"is_bot": false,
"headline": "Use prawn-dev",
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"body": "Ruby set to release v3.0 as usual in December of 2020\nI think this gem should allow usage of ruby v3.0",
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"headline": "Allow gem installation on ruby 3.0",
"author_name": "Pavel Lobashov",
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"headline": "Fix linting",
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"headline": "Allow TTC files to be read from IO object",
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"headline": "Revert maxp to pre-1.6",
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"headline": "Fix maxp table encoding causing ghostscript error",
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"oid": "2c63b11481865142a054476979539c0b08d409c2",
"body": "He contributed OTF support.",
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"headline": "Add Cameron Dutro to Authors",
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"headline": "Update certificate",
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"headline": "Remove unused method",
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"headline": "Fix code style",
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{
"oid": "83848e16d0397f96340cdf891e9407d81ebb9637",
"body": "New method makes it easier to look up a glyph object depending on the type of font. For CFF fonts, the method looks the glyph up in the charstrings index. For Postscript fonts, the method finds the associated glyph outline.",
"is_bot": false,
"headline": "Add top-level find_glyph method",
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"body": "Difference comes from changes to os/2, head, hhea, and maxp tables.",
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"headline": "Update checksum in encoder spec",
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"headline": "Calculate statistics when encoding the hhea table",
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{
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{
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{
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{
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{
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"license_state": "custom",
"license_spdx": null
}Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.
Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v1.13.0, schema v0.26.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — RubyGems.