18.0.12 (2026-09-07)
Bug Fixes
- allow a tab before the closing sequence of an ATX heading (#4084) (4417582)
- allow one more level of nested brackets in a link label (#4064) (37b28d8)
- do not add a newline to an empty code block (#4073) (23b1706)
- escape character references in autolink destinations (#4053) (8f432f0)
- reject GFM email autolink when the domain ends in _ or - (#4063) (df57534)
- reject invalid characters in HTML tag names (#4083) (300bb1d)
- remove up to the fence indentation from each content line (#4074) (0244f08)