vim-patch:8.1.1197: when starting with multiple tabs file messages is confusing

Problem:    When starting with multiple tabs file messages is confusing.
Solution:   Set 'shortmess' when loading the other tabs. (Christian Brabandt)
c75e812623

src/nvim/main.c

@@ -1535,6 +1535,7 @@ static void edit_buffers(mparm_T *parmp, char_u *cwd)
   int i;
   bool advance = true;
   win_T       *win;
+  char *p_shm_save = NULL;
 
   /*
    * Don't execute Win/Buf Enter/Leave autocommands here
@@ -1566,6 +1567,16 @@ static void edit_buffers(mparm_T *parmp, char_u *cwd)
         if (curtab->tp_next == NULL)            /* just checking */
           break;
         goto_tabpage(0);
+        // Temporarily reset 'shm' option to not print fileinfo when
+        // loading the other buffers. This would overwrite the already
+        // existing fileinfo for the first tab.
+        if (i == 1) {
+          char buf[100];
+
+          p_shm_save = xstrdup((char *)p_shm);
+          snprintf(buf, sizeof(buf), "F%s", p_shm);
+          set_option_value("shm", 0L, buf, 0);
+        }
       } else {
         if (curwin->w_next == NULL)             /* just checking */
           break;
@@ -1606,6 +1617,11 @@ static void edit_buffers(mparm_T *parmp, char_u *cwd)
     }
   }
 
+  if (p_shm_save != NULL) {
+    set_option_value("shm", 0L, p_shm_save, 0);
+    xfree(p_shm_save);
+  }
+
   if (parmp->window_layout == WIN_TABS)
     goto_tabpage(1);
   --autocmd_no_enter;

src/nvim/testdir/test_startup.vim

@@ -1,6 +1,7 @@
 " Tests for startup.
 
 source shared.vim
+source screendump.vim
 
 " Check that loading startup.vim works.
 func Test_startup_script()
@@ -559,3 +560,15 @@ func Test_zzz_startinsert()
   endif
   call delete('Xtestout')
 endfunc
+
+func Test_start_with_tabs()
+  if !CanRunVimInTerminal()
+    return
+  endif
+
+  let buf = RunVimInTerminal('-p a b c', {})
+  call VerifyScreenDump(buf, 'Test_start_with_tabs', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+endfunc

test/functional/core/startup_spec.lua

@@ -251,6 +251,23 @@ describe('startup', function()
                                                                   |
     ]])
   end)
+
+  it('sets \'shortmess\' when loading other tabs', function()
+    clear({args={'-p', 'a', 'b', 'c'}})
+    local screen = Screen.new(25, 4)
+    screen:attach()
+    screen:expect({grid=[[
+  {1: a }{2: b  c }{3:               }{2:X}|
+  ^                         |
+  {4:~                        }|
+                           |
+    ]], attr_ids={
+      [1] = {bold = true},
+      [2] = {background = Screen.colors.LightGrey, underline = true},
+      [3] = {reverse = true},
+      [4] = {bold = true, foreground = Screen.colors.Blue1},
+    }})
+  end)
 end)
 
 describe('sysinit', function()