Steps to reproduce:
1. Start evolution.
2. Choose [File] -> [New] -> [Mail Message] and open [Compose a message].
3. Focus on the mail body and input 'a'.
4. Input Ctrl + a and then 'a' is selected.
5. Input Ctrl + c and then 'a' is copied.
6. Input Right arrow and the cursor is shifted.
7. Input Enter key.
8. Right click on the body and choose [Paste Quotation] and the the quotation is
pasted.
9. Input Ctrl + z and then undo.
10. Input Ctrl + r and then redo.
11. Input Ctrl + r again.

Result: evolution crashes.

Stack trace:
  [1] _waitid(0x536, 0x8045b98, 0x0, 0x0), at 0xd0b38fe7
  [2] _waitpid(0x536, 0x8045b98, 0x0), at 0xd0b057ef
  [3] waitpid(0x536, 0x8045b98, 0x0), at 0xd0b2d30e
  [4] libgnomeui_segv_handle(0xb, 0x0, 0x8045c64), at 0xd2a1d235
  [5] __sighndlr(0xb, 0x0, 0x8045c64, 0x80db030), at 0xd0b3810f
  [6] call_user_handler(0xb, 0x0, 0x8045c64), at 0xd0b2de78
  [7] sigacthandler(), at 0xd0b2dff1
  ---- called from signal handler with signal 11 (SIGSEGV) ------
=>[8] action_do_and_destroy_redo(engine = 0x8691950, undo = 0x8691df0, stack =
0x8691df8, dir = HTML_UNDO_REDO), line 121 in "htmlundo.c"
  [9] html_undo_do_redo(undo = 0x8691df0, engine = 0x8691950), line 189 in
"htmlundo.c"
  [10] html_engine_redo(e = 0x8691950), line 86 in "htmlengine-edit.c"
  [11] gtk_html_redo(html = 0x8690e80), line 3950 in "gtkhtml.c"
  [12] command(html = 0x8690e80, com_type = GTK_HTML_COMMAND_REDO), line 4341 in
"gtkhtml.c"
  [13] gtk_html_command(html = 0x8690e80, command_name = 0xceb35280 "redo"),
line 5124 in "gtkhtml.c"
  [14] command_cb(), at 0xceb267bf

Other information:
To reproduce, you must input a new line before paste quotation operation.