performance pass

1 files changed, 6 insertions, 1 deletions

diff --git a/term.zig b/term.zig
index d332488e..cb451b7c 100644
--- a/term.zig
+++ b/term.zig
@@ -49,8 +49,13 @@ pub const File = struct {
     content: []u8, // gpa-owned file bytes
     scroll: usize = 0, // top visible file line
     /// tree-sitter syntax styles, one byte per `content` byte (0 = none). Empty
-    /// when the file's language isn't highlighted. gpa-owned. See main.highlightFile.
+    /// when the file's language isn't highlighted. gpa-owned. `highlight_start`
+    /// is the content byte offset represented by `highlights[0]`.
     highlights: []u8 = &.{},
+    highlight_start: usize = 0,
+    /// The content or viewport changed since `highlights` was refreshed for the
+    /// visible byte window.
+    syntax_dirty: bool = false,
     /// dumb whole-content undo/redo: each entry is a gpa-owned snapshot of
     /// `content`. main.pushUndo snapshots before an edit (one per insert session /
     /// delete / paste); `u`/`U` move between them. Bounded (oldest dropped).