commit https://github.com/vim/vim/commit/45d2eeaad66939348893b9254171067b0457cd9d Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jun 6 21:07:52 2016 +0200 patch 7.4.1903 Problem: When writing viminfo merging current history with history in viminfo may drop recent history entries. Solution: Add new format for viminfo lines, use it for history entries. Use a timestamp for ordering the entries. Add test_settime(). Add the viminfo version. Does not do merging on timestamp yet.

--- a/src/proto/ex_cmds.pro
+++ b/src/proto/ex_cmds.pro
@@ -16,6 +16,7 @@ void write_viminfo(char_u *file, int for
 int viminfo_readline(vir_T *virp);
 char_u *viminfo_readstring(vir_T *virp, int off, int convert);
 void viminfo_writestring(FILE *fd, char_u *p);
+int barline_writestring(FILE *fd, char_u *s, int remaining_start);
 void do_fixdel(exarg_T *eap);
 void print_line_no_prefix(linenr_T lnum, int use_number, int list);
 void print_line(linenr_T lnum, int use_number, int list);