Attempt to automatically extract session name from curren screen session

vim/.vimrc

@@ -138,7 +138,6 @@ set nocompatible
   " Wrap lines for markdown files by default
     augroup mdwrap
       autocmd BufReadPost *.md :set wrap
-      autocmd BufLeave *.md :set nowrap
     augroup END
 
   " Automatically go to the last line for log files
@@ -157,7 +156,8 @@ set nocompatible
       let g:slime_paste_file = tempname()
 
     " Default session for screen
-      let g:slime_default_config = {"sessionname": "REPL", "windowname": ""}
+      let sessionname = v:version >= 801 ? trim(system("echo $STY | cut -d. -f2")) : "default"
+      let g:slime_default_config = {"sessionname": sessionname, "windowname": ""}
 
   "{- SUPERTAB -}"
     " Use the default vim completion keys for supertab completion
@@ -209,4 +209,3 @@ set nocompatible
             \ 'type'   : 't'
         \ }
     \ }
-