v18.0.7

18.0.7 (2026-07-21)

Bug Fixes

• Avoid O(n^2) backtracking in HTML block close and tilde interrupt regexes (#4014) (f945fc5), closes #3991
• Avoid O(n^2) masked source rebuild in inline tokenizer (#4017) (9154f8f)
• keep empty list after blockquote as a sibling block (#4004) (3f144a0)
• preserve code spans adjacent to tildes (#4012) (0de7188)
• Recognize setext headings whose first line starts with # (#4015) (f056437), closes #1
• treat a line of only tabs as a blank line between paragraphs (#4007) (bc2f121)