Search results

Invalid Tree structure and anti-patterns in lark/tests/test_pattern_matching.py

Status: Open.

#1608 In lark-parser/lark;

· M-Rehan-S opened on Jun 13, 2026

TextSlice implementation breaks codebases based on 1.2.2

Status: Open.

#1599 In lark-parser/lark;

· ysard opened on Jun 1, 2026

Optional closing tag causes runtime error: Earley generates multiple start symbol items

Status: Open.

#1587 In lark-parser/lark;

· caph1993 opened on Apr 9, 2026

Infinite loop in lalr and cyk

bug

Status: Open.

#1585 In lark-parser/lark;

· acornlaw-skwilinski opened on Mar 24, 2026

Export and document lark.tools.standalone.gen_standalone

enhancement

Status: Open.

#1583 In lark-parser/lark;

· fyellin opened on Mar 23, 2026

__default_token__ and __default__ not called for Lark(transformer=transformer).

Status: Open.

#1582 In lark-parser/lark;

· fyellin opened on Mar 23, 2026

contextual lexer accept set seems wrong

question

Status: Open.

#1581 In lark-parser/lark;

· MartyMcFlyInTheSky opened on Mar 23, 2026

The version on https://pypi.org/project/lark-parser/ is 0.12.0

question

Status: Open.

#1574 In lark-parser/lark;

· KeithSloan opened on Feb 13, 2026

python.lark failed to pare special forms of with_stmt

Status: Open.

#1570 In lark-parser/lark;

· Joxos opened on Dec 7, 2025

Allow rules in templates

enhancement

Status: Open.

#1566 In lark-parser/lark;

· Sporarum opened on Oct 31, 2025

"\w" is an invalid escape sequence

Status: Open.

#1564 In lark-parser/lark;

· mtelka opened on Oct 28, 2025

Improve memory usage in the contextual lexer ?

discussionDiscuss new features or other changesDiscuss new features or other changes

enhancement

Status: Open.

#1539 In lark-parser/lark;

· erezsh opened on Jul 5, 2025