vim can actually have persistant undo

.gdbinit.d/gdbdashbard.conf

@@ -3,5 +3,5 @@
 dashboard -layout assembly !registers stack memory source expressions !history !threads
 dashboard -style syntax_highlighting 'rrt'
 dashboard -style style_low '0;37'
-#dashboard source -style context 15
+dashboard source -style context 15
 dashboard stack -style arguments False

.vimrc

@@ -37,7 +37,8 @@ syntax on
 colorscheme deus
 
 set hlsearch
-set nowrap
+set wrap
+set mouse+=a
 
 " don't clutter directories with backup files
 set nobackup
@@ -46,6 +47,12 @@ set tabstop=4
 set shiftwidth=4	" set to same as tabstop for auto-indent
 set clipboard=unnamedplus
 
+" save undo buffer, make sure directory exists!
+set undofile
+set undodir=$HOME/.vim/undo
+set undolevels=1000
+set undoreload=10000
+
 " folding
 set foldmethod=syntax
 set foldnestmax=1
@@ -123,7 +130,7 @@ augroup END
 " http://tmux-users.narkive.com/M9tIqoa0/c-pageup-and-c-pagedown-seems-not-to-work-in-tmux
 if &term =~ '^screen' && exists('$TMUX')
 	" Mouse mode
-	set mouse+=a
+	" set mouse+=a
 	set ttymouse=xterm2
 
 	" tmux sends xterm-style keys when xterm-keys option is on