[gedit] Snippet insertion should be not undoable.

[Ignacio Casal Quinteiro <icq src gnome org>]

commit c5aab1fda7cef9caaebc4279c3948dae38a26780
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Sat May 30 21:17:28 2009 +0200

    Snippet insertion should be not undoable.
    
    Snippet insertion should be not undoable. (Fixes bug #584288).
---
 plugins/snippets/snippets/Manager.py |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/plugins/snippets/snippets/Manager.py b/plugins/snippets/snippets/Manager.py
index 46c8236..6f1fbec 100644
--- a/plugins/snippets/snippets/Manager.py
+++ b/plugins/snippets/snippets/Manager.py
@@ -527,8 +527,11 @@ class Manager:
                         sens = False
 
                         self['entry_tab_trigger'].set_text('')
-                        self['entry_accelerator'].set_text('')                        
-                        self['source_view_snippet'].get_buffer().set_text('')
+                        self['entry_accelerator'].set_text('')
+                        buf = self['source_view_snippet'].get_buffer()
+                        buf.begin_not_undoable_action()
+                        buf.set_text('')
+                        buf.end_not_undoable_action()
                         self['combo_drop_targets'].child.set_text('')
 
                 else:
@@ -540,7 +543,9 @@ class Manager:
                         self['combo_drop_targets'].child.set_text(', '.join(self.snippet['drop-targets']))
                         
                         buf = self['source_view_snippet'].get_buffer()
+                        buf.begin_not_undoable_action()
                         buf.set_text(self.snippet['text'])
+                        buf.end_not_undoable_action()
 
 
                 for name in ['source_view_snippet', 'label_tab_trigger',