[orca] Add emitSpeechOnPauses setting (bgo#585417)

[William Walker <wwalker src gnome org>]

commit 1c8017c101bfdc6f61f23cf35a3c5c0f3350764f
Author: Willie Walker <william walker sun com>
Date:   Mon Jul 20 12:42:55 2009 -0400

    Add emitSpeechOnPauses setting (bgo#585417)
    
    This setting (default=True) determines whether Orca sends speech to the
    speech synthesis engine immediately when a pause is enountered in a
    speech formatting string or if it should wait to process the entire string.
    This is added because some speech systems work well when speech is
    emitted immediately (e.g., gnome-speech works well) whereas others
    introduce a terribly long painful pause (e.g., speech dispatcher does this).

 src/orca/settings.py |    8 ++++++++
 src/orca/speech.py   |    5 +++--
 2 files changed, 11 insertions(+), 2 deletions(-)
---
diff --git a/src/orca/settings.py b/src/orca/settings.py
index e2d2bac..6a65714 100644
--- a/src/orca/settings.py
+++ b/src/orca/settings.py
@@ -1341,3 +1341,11 @@ brailleTableCellDelimiter = " "
 # sorted out just right.
 #
 useExperimentalSpeechProsody = True
+
+# If True, whenever a 'pause' keyword is found in a speech formatting
+# string, any string being created will be sent to the speech synthesis
+# system immediately.  This is for bug #585417 and allows for some
+# adaptation to how different systems handle queued speech.  For example,
+# some introduce unnaturally long pauses between requests to speak.
+#
+emitSpeechOnPauses = True
diff --git a/src/orca/speech.py b/src/orca/speech.py
index 5e189eb..1ab9b6a 100644
--- a/src/orca/speech.py
+++ b/src/orca/speech.py
@@ -192,8 +192,9 @@ def speak(content, acss=None, interrupt=True):
                 if subString:
                     if subString[-1] != ".":
                         subString += "."
-                    _speak(subString, acss, interrupt)
-                    subString = None
+                    if settings.emitSpeechOnPauses:
+                        _speak(subString, acss, interrupt)
+                        subString = None
             elif isinstance(element, speech_generator.LineBreak):
                 if subString:
                     _speak(subString, acss, interrupt)