Avoid freeze in Windows API Level 0 and 1 console when UIA support is enabled

source/speechDictHandler/__init__.py

@@ -8,8 +8,8 @@
 from logHandler import log
 import os
 import codecs
+import review
 import api
-import config
 from . import dictFormatUpgrade
 from .speechDictVars import speechDictsPath
 
@@ -115,9 +115,26 @@ def sub(self, text):
 				del self[index]
 		return text
 
+
 def processText(text):
 	if not globalVars.speechDictionaryProcessing:
 		return text
+	# #14689: older (IMPROVED and END_INCLUSIVE) UIA consoles have many blank lines,
+	# which slows processing to a halt
+	focus = api.getFocusObject()
+	try:
+		# get TextInfo implementation for object review mode
+		textInfo, obj = review.getObjectPosition(focus)
+	except AttributeError:  # no makeTextInfo
+		textInfo = None
+	# late import to prevent circular dependency
+	# ConsoleUIATextInfo is used by IMPROVED and END_INCLUSIVE consoles
+	from NVDAObjects.UIA.winConsoleUIA import ConsoleUIATextInfo
+	if isinstance(textInfo, ConsoleUIATextInfo):
+		stripText = text.rstrip()
+		IGNORE_TRAILING_WHITESPACE_LENGTH = 100
+		if len(text) - len(stripText) > IGNORE_TRAILING_WHITESPACE_LENGTH:
+			text = stripText
 	for type in dictTypes:
 		text=dictionaries[type].sub(text)
 	return text

user_docs/en/changes.t2t

@@ -55,6 +55,7 @@ This only worked for Bluetooth Serial ports before. (#14524)
 Instead NVDA reports that the link has no destination. (#14723)
 - Several stability fixes to input/output for braille displays, resulting in less frequent errors and crashes of NVDA. (#14627)
 - NVDA again recovers from many more situations such as applications that stop responding which previously caused it to freeze completely. (#14759) 
+- When forcing UIA support with certain terminal and consoles, a bug is fixed which caused a freeze and the log file to be spammed. (#14689)
 - The destination of graphic links are now correctly reported in Chrome and Edge. (#14779)
 -