Prevent stack trace of search errors.

autoload/repeat.vim

@@ -74,6 +74,7 @@ function! repeat#setreg(sequence,register)
 endfunction
 
 function! repeat#run(count)
+    try
         if g:repeat_tick == b:changedtick
             let r = ''
             if g:repeat_reg[0] ==# g:repeat_sequence && !empty(g:repeat_reg[1])
@@ -102,6 +103,9 @@ function! repeat#run(count)
                 call feedkeys((a:count ? a:count : '') . '.', 'ni')
             endif
         endif
+    catch /^Vim\%((\a\+)\)\=:E\%(384\|385\|486\)/
+        echohl ErrorMsg | echo substitute(v:exception, '^Vim\%((\a\+)\)\=:', '', '') | echohl None
+    endtry
 endfunction
 
 function! repeat#wrap(command,count)