Fix bug with missing table row

Fixes #1388

library/src/layout/grid.rs

@@ -293,7 +293,7 @@ impl<'a, 'v> GridLayouter<'a, 'v> {
         for y in 0..self.rows.len() {
             // Skip to next region if current one is full, but only for content
             // rows, not for gutter rows.
-            if y % 2 == 0 && self.regions.is_full() {
+            if self.regions.is_full() && (!self.has_gutter || y % 2 == 0) {
                 self.finish_region()?;
             }
 
@@ -547,7 +547,7 @@ impl<'a, 'v> GridLayouter<'a, 'v> {
             self.finish_region()?;
 
             // Don't skip multiple regions for gutter and don't push a row.
-            if y % 2 == 1 {
+            if self.has_gutter && y % 2 == 1 {
                 return Ok(());
             }
         }

library/src/layout/table.rs

@@ -222,8 +222,8 @@ impl Layout for TableElem {
     }
 }
 
-/// Turn an iterator extents into an iterator of offsets before, in between, and
-/// after the extents, e.g. [10mm, 5mm] -> [0mm, 10mm, 15mm].
+/// Turn an iterator of extents into an iterator of offsets before, in between,
+/// and after the extents, e.g. [10mm, 5mm] -> [0mm, 10mm, 15mm].
 fn points(extents: impl IntoIterator<Item = Abs>) -> impl Iterator<Item = Abs> {
     let mut offset = Abs::zero();
     std::iter::once(Abs::zero())

tests/typ/bugs/table-row-missing.typ

@@ -0,0 +1,8 @@
+// Test that a table row isn't wrongly treated like a gutter row.
+
+---
+#set page(height: 70pt)
+#table(
+  rows: 16pt,
+  ..range(6).map(str).flatten(),
+)