[gnome-text-editor] spellcheck: create tag for misspelled words

[Christian Hergert <chergert src gnome org>]

commit be68f22dd3fc804e6ffc277c8e5db91e56a411d1
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jun 25 16:57:40 2021 -0700

    spellcheck: create tag for misspelled words

 src/editor-text-buffer-spell-adapter.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/editor-text-buffer-spell-adapter.c b/src/editor-text-buffer-spell-adapter.c
index a01175b..ffe69c3 100644
--- a/src/editor-text-buffer-spell-adapter.c
+++ b/src/editor-text-buffer-spell-adapter.c
@@ -36,6 +36,7 @@ struct _EditorTextBufferSpellAdapter
   GtkTextBuffer      *buffer;
   EditorSpellChecker *checker;
   CjhTextRegion      *region;
+  GtkTextTag         *tag;
 
   guint               cursor_position;
 
@@ -137,6 +138,10 @@ editor_text_buffer_spell_adapter_set_buffer (EditorTextBufferSpellAdapter *self,
 
       _cjh_text_region_insert (self->region, offset, length, UNCHECKED);
 
+      self->tag = gtk_text_buffer_create_tag (buffer, NULL,
+                                              "underline", PANGO_UNDERLINE_ERROR,
+                                              NULL);
+
       editor_text_buffer_spell_adapter_queue_update (self);
     }
 }