1 files changed, 11 insertions, 4 deletions
diff --git a/src/Output.zig b/src/Output.zig
index b8dd5e34..6ea81924 100644
--- a/src/Output.zig
+++ b/src/Output.zig
@@ -54,10 +54,17 @@ const RowDecoration = struct {
     mark_end: usize = 0,
     severity: enum { none, err, warning, info, hint } = .none,
 
-    pub fn styleAt(row: RowDecoration, p: *const Pardes, byte: usize) ?pardes.CellStyle {
-        // Body paper changes immediately, so its ink must change with it
-        // even while the surrounding tags are still fading.
-        const chrome = pardes.ChromeTheme.fromTheme(p.theme());
+    /// Nothing in the row is decorated: most rows of most files.
+    pub fn plain(row: RowDecoration) bool {
+        return !row.declaration and row.location_end == 0 and row.prefix_end == 0 and row.mark_end <= row.mark_start;
+    }
+
+    /// `chrome` is the theme's own (Pardes.bodyChrome): body paper changes
+    /// immediately, so its ink must change with it even while the
+    /// surrounding tags are still fading. Once a frame, never a grapheme:
+    /// working it out takes the contrast searches' pow calls.
+    pub fn styleAt(row: RowDecoration, chrome: *const pardes.ChromeTheme, byte: usize) ?pardes.CellStyle {
+        if (row.plain()) return null;
         if (row.declaration or byte < @max(row.location_end, row.prefix_end))
             return .{ .fg = .{ .rgb = chrome.lineno } };
         if (byte < row.mark_start or byte >= row.mark_end) return null;