markup: Fix two bugs

The docs state that all chars marked with the accel
marker get an underline. But we were only underlining
the first in each text chunk.

Second, if an underline appears at the end of a text
chunk, or at the end of the text, we would just eat
it, which is unexpected.

(cherry-picked from commit 8d1ea2ae)

1 files changed, 20 insertions, 30 deletions

diff --git a/pango/pango-markup.c b/pango/pango-markup.c
index 6dce1b2e..da281a62 100644
--- a/pango/pango-markup.c
+++ b/pango/pango-markup.c
@@ -665,8 +665,21 @@ text_handler           (GMarkupParseContext *context G_GNUC_UNUSED,
 		  /* The underline should go underneath the char
 		   * we're setting as the next range_start
 		   */
-		  uline_index = md->index;
-		  uline_len = g_utf8_next_char (p) - p;
+                  if (md->attr_list != NULL)
+                    {
+                      /* Add the underline indicating the accelerator */
+                      PangoAttribute *attr;
+
+                      attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
+
+                      uline_index = md->index;
+                      uline_len = g_utf8_next_char (p) - p;
+
+                      attr->start_index = uline_index;
+                      attr->end_index = uline_index + uline_len;
+
+                      pango_attr_list_change (md->attr_list, attr);
+                    }
 
 		  /* set next range_start to include this char */
 		  range_start = p;
@@ -681,35 +694,12 @@ text_handler           (GMarkupParseContext *context G_GNUC_UNUSED,
 	    }
 
 	  p = g_utf8_next_char (p);
-	}
-
-      if (range_end)
-	{
-	  g_string_append_len (md->text,
-			       range_start,
-			       range_end - range_start);
-	  md->index += range_end - range_start;
-	}
-      else
-	{
-	  g_string_append_len (md->text,
-			       range_start,
-			       end - range_start);
-	  md->index += end - range_start;
-	}
-
-      if (md->attr_list != NULL && uline_index >= 0)
-	{
-	  /* Add the underline indicating the accelerator */
-	  PangoAttribute *attr;
-
-	  attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
-
-	  attr->start_index = uline_index;
-	  attr->end_index = uline_index + uline_len;
+        }
 
-	  pango_attr_list_change (md->attr_list, attr);
-	}
+      g_string_append_len (md->text,
+                           range_start,
+                           end - range_start);
+                           md->index += end - range_start;
     }
 }