STR 2683: calling show_cursor() before a text buffer is assigned to an Fl_Text_Diisplay deos not crash any longer.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@9064 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

documentation/Doxyfile

@@ -1282,7 +1282,7 @@ TAGFILES               =
 # When a file name is specified after GENERATE_TAGFILE, doxygen will create 
 # a tag file that is based on the input files it reads.
 
-GENERATE_TAGFILE       = 
+GENERATE_TAGFILE       = fltk.tags
 
 # If the ALLEXTERNALS tag is set to YES all external classes will be listed 
 # in the class index. If set to NO only the inherited external classes 

src/Fl_Text_Display.cxx

@@ -606,6 +606,7 @@ void Fl_Text_Display::insert_position( int newPos ) {
  */
 void Fl_Text_Display::show_cursor(int b) {
   mCursorOn = b;
+  if (!buffer()) return;
   redisplay_range(buffer()->prev_char_clipped(mCursorPos), buffer()->next_char(mCursorPos));
 }