[orca] Collapse substrings with same language but different attributes

[Joanmarie Diggs <joanied src gnome org>]

commit e298845b7bea965584dc0a559ef42a4f12e6080e
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Fri Jan 7 11:31:18 2022 +0100

    Collapse substrings with same language but different attributes

 src/orca/scripts/web/script_utilities.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index 79083b9d9..c3f0116b9 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -984,12 +984,17 @@ class Utilities(script_utilities.Utilities):
 
         rv = []
         attributeSet = self.getAllTextAttributesForObject(obj)
+        lastLanguage = lastDialect = ""
         for (start, end, attrs) in attributeSet:
             language = attrs.get("language", "")
             dialect = ""
             if "-" in language:
                 language, dialect = language.split("-")
-            rv.append((start, end, language, dialect))
+            if rv and lastLanguage == language and lastDialect == dialect:
+                rv[-1] = rv[-1][0], end, language, dialect
+            else:
+                rv.append((start, end, language, dialect))
+            lastLanguage, lastDialect = language, dialect
 
         # Embedded objects such as images and certain widgets won't implement the text interface
         # and thus won't expose text attributes. Therefore try to get the info from the parent.