objectionary/eo

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EOLANG, an Experimental Pure Object-Oriented Programming Language Based on 𝜑-Calculus

Stars: 1.5k
Forks: 251
Open beginner issues: 2
Indexed issues: 135
Avg merge: 21h 30m
Merged PRs (30d): 726

Dominant language: Java
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

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135 open issues indexed

`Witnessed.joined` replaces over-cap census with `Unknown`, causing downstream voids Open

bug good-title

objectionary/eo#8844 · 1 assignee · Opened Sep 19, 2026
Heaps.write and Heaps.resize report 'can't read' and 'can't get size' for an unallocated block Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

objectionary/eo#8841 · Opened Sep 19, 2026
Printer writes bar:@ for an argument with as="φ", which the parser rejects Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

objectionary/eo#8840 · Opened Sep 19, 2026
`directory.listed` reads a closed directory handle a second time because `entries` is never forced Open

Difficulty 1/5 Under an hour Newbie friendliness 90/100

objectionary/eo#8839 · 1 comment · Opened Sep 19, 2026
`eoc` doesn't allow persistent default `--parser`/`--home-tag` version leading to failed calls Open

enhancement good-title

Difficulty 3/5 1-2 days Newbie friendliness 65/100

objectionary/eo#8836 · Opened Sep 18, 2026
`number.as-scientific` unnecessarily recalculates `mantissa` up to three times per call Open

bug good-title

objectionary/eo#8828 · 2 comments · 1 assignee · Opened Sep 18, 2026
Dispatched.java puzzle not correctly referring arms through a body Open

bug good-title pdd

objectionary/eo#8823 · 1 assignee · Opened Sep 17, 2026
`Lhs` Javadoc incorrectly refers to §3.10.7 instead of R-3.10.10a for parenthesised inline-phi Open

bug good-title

Difficulty 1/5 Under an hour Newbie friendliness 95/100

objectionary/eo#8820 · Opened Sep 17, 2026
`Emissions.topLevelInlinePhi` is a copy of `Eo.topLevelGreaterBracketIndex` Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

objectionary/eo#8819 · 1 comment · Opened Sep 17, 2026
`Lhs.bare` moves the cursor of the `Tokens` it is asked about Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

objectionary/eo#8818 · 1 comment · Opened Sep 17, 2026
`Lhs` misreads `Q.` head causing incorrect error reporting in only-phi lines Open

bug good-title

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/eo#8817 · Opened Sep 17, 2026
EO workflows execute third-party actions from mutable branches Open

Difficulty 3/5 1-2 days Newbie friendliness 70/100

objectionary/eo#8813 · Opened Sep 17, 2026
`XMIR.xsd` calls seven attributes "element" in their documentation Open

Difficulty 1/5 Under an hour Newbie friendliness 94/100

objectionary/eo#8812 · 2 comments · Opened Sep 17, 2026
i64 division in div.eo is not adequately optimised Open

bug good-title pdd

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

objectionary/eo#8805 · Opened Sep 17, 2026
Raw trees storage not properly bounded in MjFormat.java Open

bug good-title pdd

Difficulty 2/5 Under an hour Newbie friendliness 78/100

objectionary/eo#8801 · Opened Sep 17, 2026
`readOuterBinding` fails to recognize `?.` operator, enabling evasion of R-6.6.4 check Open

bug good-title help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/eo#8797 · Opened Sep 17, 2026
Fallback not enforcing return type agreement creates unreported mismatch in as-i64 Open

bug good-title

objectionary/eo#8790 · 1 assignee · Opened Sep 16, 2026
`eo-maven-plugin` tests fail without UTF-8 locale due to invalid characters in file names Open

bug good-title

Difficulty 4/5 3-5 days Newbie friendliness 52/100

objectionary/eo#8783 · 1 comment · Opened Sep 16, 2026
`number.sine` excessively recomputes reduction pipeline due to unforced `reduced` attribute being read twice Open

bug good-title

Difficulty 1/5 Under an hour Newbie friendliness 88/100

objectionary/eo#8780 · 1 comment · Opened Sep 16, 2026
`eo:receiver` fails to attach `@line` and `@pos` to `.ρ/ξ` nodes during synthesis, causing invisibility to location tracking and coverage instrumentation Open

bug good-title

Difficulty 3/5 1-2 days Newbie friendliness 76/100

objectionary/eo#8765 · Opened Sep 15, 2026
`qulice` check failure due to missing empty javadoc line before `@since` in `FoldedTest` on `master` branch Open

bug good-title

Difficulty 1/5 Under an hour Newbie friendliness 95/100

objectionary/eo#8761 · 1 comment · Opened Sep 14, 2026
The `is-finite.if` guard around `%f` is copied into eleven objects instead of being one of them Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

objectionary/eo#8756 · Opened Sep 14, 2026
`Heaps.read` has no caller outside its own test Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

objectionary/eo#8742 · Opened Sep 13, 2026
`const-to-dataized.xsl` incorrectly strips `@local` mark from attributes with file-local handle and const marker in XMIR Open

bug good-title

objectionary/eo#8738 · 1 comment · 1 assignee · Opened Sep 13, 2026
SuffixTest cites R-9.3.1, a rule the parser specification does not define Open

bug

objectionary/eo#8733 · 1 assignee · Opened Sep 12, 2026
Runtime crashes when an object receives more positional arguments than its voids Open

bug good-title

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/eo#8732 · Opened Sep 12, 2026
`eo:bytes-to-string` and its three helpers in `_funcs.xsl` have no caller Open

Difficulty 1/5 1-3 hours Newbie friendliness 88/100

objectionary/eo#8716 · Opened Sep 11, 2026
The alias guards in `add-default-package.xsl` cannot be reached Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/eo#8715 · Opened Sep 11, 2026
`resolve-before-stars.xsl` runs on every source and can never match anything Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

objectionary/eo#8713 · Opened Sep 11, 2026
`FpIfTargetOlder` has no caller outside its own test Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

objectionary/eo#8709 · Opened Sep 11, 2026
'too-deep-object' skip functionality is malfunctioning in pom.xml Open

bug good-title pdd

Difficulty 2/5 Under an hour Newbie friendliness 68/100

objectionary/eo#8664 · Opened Sep 10, 2026
'invalid-name-notation' is incorrectly skipped in pom.xml Open

bug good-title pdd

Difficulty 1/5 Under an hour Newbie friendliness 88/100

objectionary/eo#8663 · 1 comment · Opened Sep 10, 2026
'unit-test-is-not-verb' in pom.xml is erroneously being skipped Open

bug good-title pdd

Difficulty 1/5 Under an hour Newbie friendliness 85/100

objectionary/eo#8660 · 1 comment · Opened Sep 10, 2026
'pom.xml' improperly skips 'many-void-attributes', causing issues Open

bug good-title pdd

Difficulty 1/5 Under an hour Newbie friendliness 85/100

objectionary/eo#8659 · Opened Sep 10, 2026
`eo-runtime` fails with `org.eolang:lints` 0.4.9 due to newly applied and modified lints Open

bug good-title

objectionary/eo#8654 · 4 comments · 1 assignee · Opened Sep 10, 2026
JarIT and snapshot Hello-world builds fail on missing regex atom classes Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

objectionary/eo#8649 · 2 comments · Opened Sep 10, 2026
'Redundant-attachment' incorrectly skipped in regex.eo Open

bug good-title pdd

Difficulty 1/5 Under an hour Newbie friendliness 85/100

objectionary/eo#8636 · Opened Sep 10, 2026
Re-parenting org.eolang.posix in package-info.java is not functioning properly Open

bug good-title pdd

objectionary/eo#8619 · 1 assignee · Opened Sep 10, 2026
Failure messages in `MsgUnderlinedTest.java` and `ParseErrorTest.java` read as expectations, not as claims about the error Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

objectionary/eo#8616 · 3 comments · Opened Sep 9, 2026
`Rows.java` lets a null span into its copy and dies later with a message-free `NullPointerException` Open

bug

Difficulty 1/5 Under an hour Newbie friendliness 92/100

objectionary/eo#8615 · 1 comment · Opened Sep 9, 2026
`ParseErrorTest.java` tests only a constructor, two accessors and an error message Open

Difficulty 1/5 Under an hour Newbie friendliness 85/100

objectionary/eo#8614 · 3 comments · Opened Sep 9, 2026
`Tokens.java` and `Suffix.java` each carry a copy of `clamped` and of the identifier-glyph check Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

objectionary/eo#8613 · 3 comments · Opened Sep 9, 2026
`Tokens.readChain` computes the fragile flag twice and drops the copy it is given Open

Difficulty 2/5 1-3 hours Newbie friendliness 90/100

objectionary/eo#8610 · 3 comments · Opened Sep 9, 2026
Five line shapes write the suffix marks that `Marked` was made to write Open

Difficulty 3/5 1-2 days Newbie friendliness 84/100

objectionary/eo#8609 · 3 comments · Opened Sep 9, 2026
`MethodChain` stores three fields and decides nothing about them Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

objectionary/eo#8608 · 3 comments · Opened Sep 9, 2026
`Emissions.emitArg` repeats its binding, const and close tail in both branches Open

Difficulty 1/5 Under an hour Newbie friendliness 90/100

objectionary/eo#8607 · 3 comments · Opened Sep 9, 2026
Five line shapes inline `Marked.apply()` instead of using it Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

objectionary/eo#8605 · 3 comments · Opened Sep 9, 2026
`Eo.qdot` is a second copy of `Tokens.fragileAhead` Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

objectionary/eo#8606 · 3 comments · Opened Sep 9, 2026
`LnTextBlock` re-transcribes the chain loop that `ChainEmission` owns Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

objectionary/eo#8604 · 3 comments · Opened Sep 9, 2026
`Emissions.emitArg` branches into two identical arms in `Emissions.java` Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

objectionary/eo#8602 · 3 comments · Opened Sep 9, 2026

objectionary/eo

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