tc39/ecmarkup

View on GitHub

An HTML superset/Markdown subset source format for ECMAScript and related specifications

Stars: 245
Forks: 80
Open beginner issues: 0
Indexed issues: 100
Avg merge: 10h 46m
Merged PRs (30d): 2

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

100 open issues indexed

Minification flattens Prince's @prince-overlay inside @page, breaking printable output Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

tc39/ecmarkup#729 · 2 comments · Opened Sep 18, 2026
Parameter/alias names are limited to ASCII Open

Difficulty 3/5 1-2 days Newbie friendliness 64/100

tc39/ecmarkup#718 · 1 reaction · Opened Aug 13, 2026
tooltip for early-return symbol (and the user-code symbol) Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

tc39/ecmarkup#717 · 1 comment · Opened Jul 29, 2026
Should ASCII apostrophes be replaced with U+2019 RIGHT SINGLE QUOTATION MARK `’`? Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

tc39/ecmarkup#703 · 1 comment · 1 reaction · Opened Jun 18, 2026
Support placeholders and TODOs Open

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

tc39/ecmarkup#677 · 2 comments · Opened Feb 28, 2026
Abstract method declarations should have the "Permalink/Pin/References" tooltip Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#675 · Opened Feb 12, 2026
emu-concrete-method-dfns doesn't properly merge definitions from biblio with in-file definitions Open

tc39/ecmarkup#674 · 1 assignee · Opened Feb 12, 2026
figure out a way to test client-side JS, and/or convert to TypeScript Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

tc39/ecmarkup#671 · Opened Jan 26, 2026
Feature request: support clause number permanence option Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

tc39/ecmarkup#660 · 4 comments · Opened Oct 6, 2025
Extending pandoc to convert from plain markdown and rst to ecmarkup Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

tc39/ecmarkup#650 · 2 comments · Opened Aug 12, 2025
missing variable error in abstract closures should suggest adding the variable to the captures list, if applicable Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#649 · Opened Jul 22, 2025
Flag to disable dark mode Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#647 · 1 reaction · Opened May 31, 2025
Support costom note types Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

tc39/ecmarkup#636 · 1 reaction · Opened Mar 7, 2025
Longest internal slot name in tables always has the last `]` on a newline Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

tc39/ecmarkup#634 · Opened Feb 21, 2025
top-level annexes do not support explicit numbers Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 35/100

tc39/ecmarkup#629 · 2 comments · Opened Dec 18, 2024
opengraph tags not generated for non-draft docs when no version specified Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

tc39/ecmarkup#625 · Opened Nov 8, 2024
Rendering issue in Safari on every 10th step Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

tc39/ecmarkup#623 · 2 comments · Opened Oct 10, 2024
linter: encourage use of NormalCompletion / ReturnCompletion / ThrowCompletion over Completion Records Open

linting

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#622 · Opened Oct 3, 2024
False positive warning about "returning an abrupt completion" Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

tc39/ecmarkup#619 · 9 comments · Opened Sep 27, 2024
Odd emu-format behaviour with <dt> in table Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#618 · Opened Sep 24, 2024
Missing fonts on the 15th edition single page Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

tc39/ecmarkup#616 · Opened Sep 18, 2024
ExtendedPatternCharacter has emu-t outside of the emu-gmod Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#594 · Opened May 9, 2024
extract SVG from CSS as image file in /img Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

tc39/ecmarkup#585 · Opened Mar 22, 2024
Add TypeScript declaration file Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

tc39/ecmarkup#563 · Opened Nov 27, 2023
warn for unnecessary emu-not-refs Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

tc39/ecmarkup#557 · 1 comment · Opened Sep 25, 2023
`#` is weird in IBM Plex mono Open

tc39/ecmarkup#556 · 5 comments · 1 assignee · Opened Sep 18, 2023
dfns should have IDs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tc39/ecmarkup#555 · 1 reaction · Opened Sep 12, 2023
add hidden `~` around enums and `_` around aliases for copy-paste Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

tc39/ecmarkup#550 · 3 comments · 2 reactions · Opened Aug 30, 2023
Menu pane should be resizable Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#549 · Opened Aug 30, 2023
Should spaces between AO names and arguments be allowed? Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

tc39/ecmarkup#540 · Opened Jul 16, 2023
Can structured headers' <ins>/<del> UI be improved? Open

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

tc39/ecmarkup#537 · 1 comment · Opened Jun 29, 2023
id namespacing is undocumented and seems to be broken Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tc39/ecmarkup#532 · 1 comment · Opened Jun 18, 2023
Completion record linting doesn't work quite right with parentheses Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

tc39/ecmarkup#529 · 9 comments · Opened Jun 16, 2023
The emu-production attribute "optional" should be removed Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

tc39/ecmarkup#508 · Opened Jan 18, 2023
Headings are not hierarchical Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tc39/ecmarkup#502 · 1 comment · Opened Jan 10, 2023
remove formatting lints already handled by the formatter Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#487 · Opened Sep 26, 2022
warn if an optional parameter is always passed Open

linting

Difficulty 3/5 1-2 days Newbie friendliness 35/100

tc39/ecmarkup#486 · 5 comments · Opened Sep 23, 2022
Can there be a lint warning for productions not referenced by emu-prodref? Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#485 · 2 comments · Opened Sep 23, 2022
validate HTML entities Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#476 · 1 comment · Opened Aug 17, 2022
Support inlining year numbers / "draft" Open

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

tc39/ecmarkup#475 · 1 reaction · Opened Jul 27, 2022
SOURCE_DATE_EPOCH not working as expected Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tc39/ecmarkup#470 · 10 comments · Opened Jul 10, 2022
provide a way for definitions to opt in to only getting linked when used as `invocation()`s Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#461 · 1 reaction · Opened Jun 16, 2022
Structured header for a redefinition should support identifying the clause being superseded Open

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

tc39/ecmarkup#456 · 2 comments · Opened Jun 9, 2022
Structured header parameter parser is too loose Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

tc39/ecmarkup#454 · 1 comment · Opened Jun 6, 2022
Structured Headers don't support CRLF line terminators Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

tc39/ecmarkup#453 · 2 comments · Opened May 26, 2022
skip `del` elements when matching productions Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tc39/ecmarkup#450 · Opened May 19, 2022
The toolbox and grammars don't mesh well Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tc39/ecmarkup#435 · Opened Apr 18, 2022
Put full grammar in the biblio Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

tc39/ecmarkup#431 · Opened Apr 2, 2022
Capital letter after "Assert:" lint is too strict Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

tc39/ecmarkup#421 · Opened Mar 18, 2022
Structured headers don't seem to work with links in headers Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

tc39/ecmarkup#420 · 2 comments · Opened Mar 17, 2022

tc39/ecmarkup

Get new issues in your inbox