vim-patch:7.4.1643

Problem:    Terminating file name has side effects.
Solution:   Restore the character. (mostly by James McCoy, closes vim/vim#713)

d4caf5c16a

src/nvim/eval.c

@@ -21994,8 +21994,10 @@ repeat:
 
   if (src[*usedlen] == ':' && src[*usedlen + 1] == 'S') {
     // vim_strsave_shellescape() needs a NUL terminated string.
+    c = (*fnamep)[*fnamelen];
     (*fnamep)[*fnamelen] = NUL;
     p = vim_strsave_shellescape(*fnamep, false, false);
+    (*fnamep)[*fnamelen] = c;
     xfree(*bufp);
     *bufp = *fnamep = p;
     *fnamelen = STRLEN(p);