[gnome-builder/wip/gtk4-port] plugins/omni-gutter: set single-paragraph optimizations

[Christian Hergert <chergert src gnome org>]

commit a75fd4d08eb3b373c4d2ce7d168a8615858ad135
Author: Christian Hergert <chergert redhat com>
Date:   Wed Apr 27 16:44:19 2022 -0700

    plugins/omni-gutter: set single-paragraph optimizations

 src/plugins/omni-gutter/gbp-omni-gutter-renderer.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c 
b/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
index 5786eb61e..6d5262ede 100644
--- a/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
+++ b/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
@@ -756,6 +756,7 @@ gbp_omni_gutter_renderer_measure (GbpOmniGutterRenderer *self)
    * match the font styling as much as possible.
    */
   layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), numbers);
+  pango_layout_set_single_paragraph_mode (layout, TRUE);
 
   /*
    * Now cache the width of the text layout so we can simplify our