6040c054cb
## Problem
Toggling large diffs via fugitive's `=` caused the top of the buffer to
re-render and glitch. `ensure_cache` always created a new cache entry
with
`pending_clear=true` and `highlighted={}`, forcing `on_win` to clear and
re-highlight every visible hunk — including stable ones above the toggle
point that never changed.
## Solution
On reparse, compare old and new hunk lists using a prefix + suffix
matching
strategy. Hunks that match (same filename, line count, and sampled
content)
carry forward their `highlighted` state so `on_win` skips them.
Comparison
is O(1) per hunk. Only runs when the old entry had
`pending_clear=false`;
`invalidate_cache`/`ColorScheme` paths still force full re-highlight.
Closes #131
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|---|---|---|
| .. | ||
| commands.lua | ||
| conflict.lua | ||
| debug.lua | ||
| diff.lua | ||
| fugitive.lua | ||
| git.lua | ||
| health.lua | ||
| highlight.lua | ||
| init.lua | ||
| lib.lua | ||
| log.lua | ||
| merge.lua | ||
| parser.lua | ||