Owner

commonmark

3 indexed repositories · View on GitHub

commonmark-java
Java library for parsing and rendering CommonMark (Markdown)

Java · 2691 stars
cmark
CommonMark parsing and rendering library and program in C

C · 2031 stars
commonmark.js
CommonMark parser and renderer in JavaScript

JavaScript · 1567 stars

Beginner friendly Everything

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Android: List.of() (API 30+) used in core since 0.24.0 contradicts the README's "minimum API level is 19" Open

Difficulty 4/5 3-5 days Newbie friendliness 74/100

commonmark/commonmark-java#457 · Opened Sep 16, 2026
How to preserve spaces in GFM tables? Open

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

commonmark/commonmark-java#443 · 4 comments · Opened Jul 29, 2026
Inline code language Open

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

commonmark/cmark#626 · 4 comments · Opened Jul 13, 2026
Regarding commit 54b2be5 (warnings from clang) Open

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

commonmark/cmark#624 · Opened Jun 12, 2026
Single-space blank line evicts a list-item continuation Open

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

commonmark/cmark#618 · Opened Jun 1, 2026
Check errno after calling strtol Open

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

commonmark/cmark#614 · Opened May 27, 2026
Option to define custom flanking/canOpen/canClose rules for delimiters Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

commonmark/commonmark-java#428 · 4 comments · Opened Apr 10, 2026
Building both static and shared library? Open

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

commonmark/cmark#598 · 2 comments · Opened Jan 7, 2026
White space handling looks inconsistent between HTML block element vs HTML inline element Open

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

commonmark/commonmark.js#303 · 2 comments · Opened Dec 19, 2025
Support Incremental Parsing for Streaming Markdown Input/支持流式 Markdown 输入的增量解析 Open

enhancement

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

commonmark/commonmark-java#414 · 1 comment · 1 reaction · Opened Dec 17, 2025
FR: Add all extensions by adding single dependency Open

enhancement

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

commonmark/commonmark-java#411 · 2 comments · Opened Nov 5, 2025
Incorrect `parser->offset` advancement for closing fenced code blocks in `parse_code_block_prefix` Open

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

commonmark/cmark#590 · 3 comments · Opened Oct 31, 2025
Implement methods to go backwards and look backwards inside Scanner Open

enhancement

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

commonmark/commonmark-java#395 · 2 comments · Opened Aug 18, 2025
Unable to override default delimiter processors Open

enhancement

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

commonmark/commonmark-java#386 · 4 comments · Opened Jun 30, 2025
The cmark_markdown_to_html function call uses free to release crashes Open

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

commonmark/cmark#577 · 2 comments · Opened Apr 29, 2025
Link Reference Definition Followed by Hyphen Underline Open

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

commonmark/cmark#575 · 1 comment · Opened Apr 5, 2025
Setext Heading LRDs take precedence over Paragraph LRDs Open

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

commonmark/commonmark.js#298 · Opened Jan 21, 2025
Issue with rendering whitespace to commonmark Open

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

commonmark/cmark#566 · 1 comment · Opened Nov 13, 2024
Java (OpenJDK) using commonmark-java Open

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

commonmark/commonmark-java#342 · 1 comment · 1 reaction · Opened Sep 20, 2024
Introduce a mechanism to duplicate/clone a node and all it's children? Open

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

commonmark/cmark#560 · 4 comments · Opened Aug 19, 2024
Consider allowing Nodes with a "fragment" type. Open

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

commonmark/cmark#558 · 10 comments · Opened Aug 19, 2024
Non-alphabetical start of the string breaks the markup in some cases Open

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

commonmark/commonmark.js#287 · 1 reaction · Opened Jul 11, 2024
`parse_list_marker` Does Not Correctly Check for CRLF. Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

commonmark/cmark#550 · Opened Jun 24, 2024
Quadratic behavior when parsing smart quotes Open

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

commonmark/cmark#521 · 4 comments · Opened Jan 15, 2024
[Example]: Extended HTML renderer Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

commonmark/commonmark.js#275 · Opened Jan 10, 2024
Keep copyright information in source files Open

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

commonmark/cmark#505 · Opened Jan 3, 2024
why does this HTML block start and end on the same line? Open

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

commonmark/cmark#488 · 3 comments · Opened Nov 19, 2023
Please provide working .a/.lib files Open

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

commonmark/cmark#487 · 1 comment · Opened Nov 12, 2023
Preserve information about leading whitespace in paragraphs Open

enhancement help wanted

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

commonmark/commonmark-java#301 · 2 comments · Opened Oct 20, 2023
`make mingw` should forward/use CC, CXX, HOST variables if set Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

commonmark/cmark#484 · 2 comments · Opened Sep 25, 2023
HTML comments do not follow the 0.30 spec Open

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

commonmark/cmark#476 · Opened Apr 18, 2023
libcmark uses full version number as major dylib version number Open

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

commonmark/cmark#474 · 3 comments · Opened Apr 3, 2023
Delegate node walking to others Open

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

commonmark/commonmark.js#267 · 3 comments · Opened Dec 1, 2022
Inconsistent escape of image alt Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

commonmark/commonmark.js#264 · 1 reaction · Opened Oct 5, 2022
Tracking backslash escapes? Open

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

commonmark/cmark#450 · Opened Sep 20, 2022
Definition + setext underline/thematic break, creates loose empty paragraph Open

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

commonmark/commonmark.js#262 · 3 comments · Opened Sep 13, 2022
How To Fork and Implement Highlighter / Hilite Open

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

commonmark/commonmark.js#257 · Opened May 25, 2022
`commonmark.js` should first evaluate character references, before interpreting “words” of the info string Open

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

commonmark/commonmark.js#255 · 1 comment · Opened Apr 26, 2022
Doesn’t read commonmark when included in unit testing Open

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

commonmark/commonmark.js#253 · 1 comment · Opened Apr 1, 2022
incorrect start_column & end_column Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

commonmark/cmark#442 · 2 comments · 1 reaction · Opened Mar 23, 2022
API documentation is missing an explanation of CMARK_NODE_CUSTOM_BLOCK and CMARK_NODE_CUSTOM_INLINE Open

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

commonmark/cmark#441 · 2 comments · Opened Mar 16, 2022
[Feature] Support math environment via $ and $$ like LaTeX Open

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

commonmark/cmark#439 · 3 comments · 2 reactions · Opened Feb 3, 2022
[Clang-tidy] Narrowing data types is implementation defined Open

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

commonmark/cmark#437 · Opened Jan 30, 2022
move cli support to a separate package (or the main lib) Open

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

commonmark/commonmark.js#250 · 1 comment · 3 reactions · Opened Jan 25, 2022
Add additional C flags to your build (improving your code) Open

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

commonmark/cmark#435 · 5 comments · Opened Jan 22, 2022
Type-4 HTML block does not interrupt a paragraph Open

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

commonmark/commonmark.js#223 · Opened Jul 26, 2021
Incorrect emphasis handling Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

commonmark/commonmark.js#221 · 1 comment · Opened May 12, 2021
empty list item should be treated as an empty paragraph in loose list Open

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

commonmark/commonmark.js#220 · Opened May 2, 2021
Quadratic output growth with CommonMark renderer Open

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

commonmark/cmark#377 · 13 comments · Opened Feb 10, 2021
Illegal control characters in XML output Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

commonmark/cmark#365 · 12 comments · Opened Oct 19, 2020

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