Crate strop_core

Expand description

strop-core: the buffer. A rope, byte-offset positions, edit ops. No UI, no modes, no grammar — the thing everything else edits.

Modules§

history: Undo history (Helix helix-core/history.rs lineage, ported): revisions form a tree — every committed transaction is a node holding both its undo and redo edit sets; u walks to the parent, Ctrl-r descends to the last-visited child. Editing after an undo forks a new branch; the tree keeps the old one (0001 pillar 4: Neovim users expect branches).
id: Stable identities and typed coordinates (0014 wave 2).
selection: One selection model for everything (0014 wave 2): normal mode is a collapsed selection, visual mode is a stretched one, multicursor is several. Cursor / anchor / extra-cursors used to be three fields that could disagree; the set owns them with the invariants in one place.

Buffer: A text buffer. Positions are UTF-8 byte offsets, everywhere (0001 §5.1).
Range: A half-open byte range [start, end) plus its vim shape.

MotionShape: How vim thinks about a range (0014): charwise ops carry the motion’s inclusivity (dfx vs dtx differ by it); linewise is line-shaped. Blockwise lands with visual block — the enum is the extension point.