sammygill
WebCore contributor
Summary
sammygill works almost entirely in WebCore layout, and within that almost entirely on grid: the commit stream is a sustained migration of placement, track sizing, and stretching logic into GridFormattingContext and GridLanesLayout, interleaved with occasional site-compat fixes (a missing window load dispatch, an overflow/overlap regression). The security and hardening flags both resolve to the same margin-trim refactor that moved trimming machinery out of RenderBox — structural cleanup rather than a vulnerability fix, so the security signal on this profile is thin. Where to look next: the in-flight GFC/Grid Lanes rewrite is live surface — auto-placement cursor advancement, multi-spanning item resolution, fit-content growth-limit clamping, minimum-size clamping against max track sizing functions, and grid contribution to scrollable overflow have all been corrected in the last several weeks, which is the shape of freshly rewritten layout arithmetic still settling.
Components
Security Fix History
Hardening Commits
Recent Commits
- 2026-09-18 [GFC][Integration] Relax restriction related to items locked to a row.
- 2026-09-18 [GFC] Explicitly positioned item's start line should always be before end.
- 2026-09-14 [GFC] Fill in remaining bits for multi-spanning item placement.
- 2026-09-14 [GFC] Map grid-auto-{columns,rows} sizes to leading tracks.
- 2026-09-14 [GFC] Move Grid item placement logic to GridFormattingContext.
- 2026-09-10 [GFC] fit-content() tracks should not be stretched and should cap the growth limit
- 2026-09-09 [GFC] A grid item's automatic minimum size is not clamped to a fixed max track sizing function.
- 2026-09-08 [Grid][Cleanup] Separate out stretching logic in a their own functions.
- 2026-09-03 [Grid Lanes] fit-tolerance does not interpolate between <length-percentage> values
- 2026-09-02 [Grid Lanes][Cleanup] Return a GridLanesResult from placement.
- 2026-09-02 bankofamerica.com: cannot complete a wire transfer because the window load event is never dispatched
- 2026-09-01 [Grid Lanes] Explicitly-placed items should not advance the auto-placement cursor.
- 2026-08-31 [GFC] Fixed track sizing functions get overridden during "size tracks to fit non-spanning items".
- 2026-08-31 [GFC] Flexible tracks should respect grid container's min/max size.
- 2026-08-28 GitHub.com: v2: emoji reaction overlaps code box in comment