servo/rust-cssparser

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Rust implementation of CSS Syntax Level 3

Stars: 869
Forks: 152
Open beginner issues: 0
Indexed issues: 20
Avg merge: 15h 8m
Merged PRs (30d): 12

Dominant language: Rust
License: MPL-2.0
Last GitHub push: Sep 7, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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20 open issues indexed

is_ident_start reads the wrong byte for a hyphen before a backslash Open

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

servo/rust-cssparser#440 · Opened Aug 20, 2026
Dimension with an e-prefixed unit serializes to a number token Open

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

servo/rust-cssparser#439 · Opened Aug 20, 2026
Merge style_traits::ToCss trait into cssparser::ToCss Open

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

servo/rust-cssparser#438 · 3 comments · 1 reaction · Opened Aug 19, 2026
Would an opt-in declaration source-provenance API be in scope? Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

servo/rust-cssparser#436 · 1 comment · Opened Aug 6, 2026
needs_separator_when_before omits CDC, so serialized tokens re-parse wrong Open

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

servo/rust-cssparser#434 · Opened Jul 25, 2026
consider switching to zmij for css numeric serialization Open

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

servo/rust-cssparser#423 · 5 comments · Opened Jan 24, 2026
Stack overflow detected during fuzzing Open

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

servo/rust-cssparser#405 · 1 comment · Opened Apr 25, 2025
BadString recovery issues Open

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

servo/rust-cssparser#393 · Opened Oct 28, 2024
detect duplicates values on keyframes Open

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

servo/rust-cssparser#392 · Opened Jul 7, 2024
no_std support? Open

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

servo/rust-cssparser#390 · 1 comment · Opened Jun 4, 2024
cargo fmt does not work through macros Open

help wanted

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

servo/rust-cssparser#385 · Opened Apr 8, 2024
Token usage of CowRcStr and NonNull/Rc<String> makes it non Send Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 30/100

servo/rust-cssparser#370 · 3 comments · Opened Nov 30, 2023
Add benchmark tests for color parsing Open

enhancement help wanted

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

servo/rust-cssparser#319 · 5 comments · Opened Jan 22, 2023
Serialization of some idents results in redundant spaces Open

bug

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

servo/rust-cssparser#268 · Opened Nov 24, 2019
Do not generate colors phf map at compile time Open

enhancement help wanted

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

servo/rust-cssparser#236 · 3 comments · Opened Feb 7, 2019
cargo test fails on archive from crates.io Open

enhancement help wanted

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

servo/rust-cssparser#213 · 9 comments · Opened Jan 24, 2018
Consider using a pointer offset instead of a slice and integer position Open

enhancement help wanted

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

servo/rust-cssparser#210 · 4 comments · Opened Dec 8, 2017
Avoid parsing to non-finite floating point numbers Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

servo/rust-cssparser#167 · 7 comments · Opened Jun 27, 2017
Round-trip parsing and output generation causes difference in parsed result Open

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

servo/rust-cssparser#165 · 3 comments · Opened Jun 25, 2017
Reconsider match_byte macro if plain match becomes optimized enough Open

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

servo/rust-cssparser#128 · 3 comments · Opened Mar 13, 2017

servo/rust-cssparser

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