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Changelog

Source: NEWS.md

OEIS.R 0.2.0

OEIS redesigned its sequence pages (the old <tt>/table-based HTML layout was replaced with div.section/div.sectname/div.sectbody/div.sectline markup), which broke every function that scraped the full sequence page. This release re-targets all of that scraping at the new page structure and fixes a couple of latent parsing bugs found along the way.

  • Fixed OEIS_df() (and everything built on it: OEIS_status(), OEIS_crossrefs(), OEIS_cf(), OEIS_seqs_in_context(), OEIS_seqs_adjacent(), and the OEIS_xml methods of OEIS_comments(), OEIS_links(), OEIS_example(), OEIS_formula(), OEIS_mathematica(), OEIS_extensions(), OEIS_author(), OEIS_date()) to use OEIS’s current page markup. This was the root cause of OEIS_sequence() failing outright.
  • Fixed OEIS_description.OEIS_xml(), OEIS_formerly.OEIS_xml(), OEIS_terms.OEIS_xml(), OEIS_offset.OEIS_xml(), and OEIS_keywords.OEIS_xml(), which relied on <tt> elements that no longer exist on the page.
  • Fixed a bug in OEIS_formerly() that returned the sequence’s revision number and last-modified timestamp (e.g. "#400", "Jun", "2026") alongside, or instead of, the actual M-/N-number.
  • Fixed OEIS_total_sequences(), which no longer matched OEIS’s front page markup; it now reads the total from div.dbinfo and returns NA_integer_ (instead of a silently stale hardcoded count) when the page can’t be parsed.
  • Removed the stringr dependency introduced in a work-in-progress fix; the total-sequences count is now extracted with base R regular expressions, consistent with the rest of the package.
  • .onAttach() no longer prints a hardcoded, stale sequence count when OEIS_total_sequences() fails.
  • Updated README.md: fixed Quick Start examples that referenced functions that don’t exist (OEIS_plot(), OEIS_name()), removed an unsubstantiated Shiny app link, and pointed the Contributing section at the new CONTRIBUTING.md.
  • Added CONTRIBUTING.md with development setup, test, and pull request guidelines.
  • Test files that talk to the live OEIS site now call skip_if_oeis_unreachable() first, so a CI runner that can’t reach oeis.org (rate limiting, a transient block, no network) shows up as SKIP rather than failing the whole suite.
  • GitHub Actions traffic is currently getting a 403 Forbidden from oeis.org (Cloudflare), which was crashing R CMD check outright during checking examples (an @examples failure there aborts the whole check, unlike a test failure). Every @examples block that hits the network is now wrapped in \dontrun{}, and the vignette probes oeis.org once up front and skips evaluating its (also live) code chunks if it’s unreachable, instead of failing the build.
  • Fixed OEIS_comments.OEIS_sequence(), which returned x$example instead of x$comments (copy-paste bug).
  • Added inst/CITATION so citation("OEIS.R") works, a root-level CITATION.cff so GitHub’s “Cite this repository” button works, and a Citation section to README.md.
  • Added a pkgdown site (_pkgdown.yml, .github/workflows/pkgdown.yml), deployed to GitHub Pages from the gh-pages branch. Added URL: and BugReports: to DESCRIPTION, removed the meaningless Config/Needs/website: oeis.org line (that field lists R package names, not URLs), and fixed two pkgdown accessibility warnings in README.md (a relative image path pkgdown couldn’t resolve, and missing alt text on the sticker image).
  • Fixed the mechanical lintr findings across the package (long lines, inconsistent indentation, missing spaces around operators/braces, dead code, an unwrapped multi-line anonymous function, a stray unused . <- NULL). Added .lintr documenting two intentional style choices that default lintr flags but that this package deliberately keeps: OEIS_*-style exported names (renaming would be a breaking API change) and consistent use of the magrittr %>% pipe throughout (rather than mixing in the base |> pipe).
  • Added tests/testthat/test_offline_accessors.R, covering the OEIS_*.OEIS_sequence accessor methods, OEIS_bibtex(), OEIS_ggplot(), plot.OEIS_sequence(), OEIS_ID.OEIS_bfile(), OEIS_bfile_url(), author_list(), and char0toNULL() against a hand-built fake OEIS_sequence object. Unlike the rest of the suite, these tests need no network access at all, so they keep running (and keep contributing to coverage) even while oeis.org is blocking CI traffic — this is what caught the OEIS_comments() bug above.

OEIS.R 0.1.0.1

  • Added a NEWS.md file to track changes to the package.
  • Improved documentation
  • Fixes to OEIS_links, OEIS_mathematica