Merge pull request #28080 from echasnovski/intro-buf-change

fix(intro): link showing intro to state at start

src/nvim/drawscreen.c

@@ -424,7 +424,7 @@ int update_screen(void)
   static bool still_may_intro = true;
   if (still_may_intro) {
     if (!may_show_intro()) {
-      must_redraw = UPD_NOT_VALID;
+      redraw_later(firstwin, UPD_NOT_VALID);
       still_may_intro = false;
     }
   }

src/nvim/version.c

@@ -2715,9 +2715,11 @@ void list_version(void)
 /// Whether it still is not too late to show an intro message
 bool may_show_intro(void)
 {
-  return (buf_is_empty(firstwin->w_buffer)
+  return (buf_is_empty(curbuf)
-          && (firstwin->w_buffer->b_fname == NULL)
+          && (curbuf->b_fname == NULL)
-          && one_window(firstwin)
+          && (curbuf->handle == 1)
+          && (curwin->handle == LOWEST_WIN_ID)
+          && one_window(curwin)
           && (vim_strchr(p_shm, SHM_INTRO) == NULL));
 }
 

test/functional/ui/messages_spec.lua

@@ -1630,25 +1630,25 @@ describe('ui/ext_messages', function()
       {1:~                }type  :help iccf{5:<Enter>}       for information {1:                 }|
       {1:~                                                                               }|*5
     ]]
+    local showmode = { { '-- INSERT --', 3 } }
     screen:expect(introscreen)
 
     -- <c-l> (same as :mode) does _not_ clear intro message
     feed('<c-l>i')
-    screen:expect { grid = introscreen, showmode = { { '-- INSERT --', 3 } } }
+    screen:expect { grid = introscreen, showmode = showmode }
 
-    -- opening a float also does not
+    -- opening a float without focus also does not
-    local win = api.nvim_open_win(api.nvim_create_buf(false, false), true, {
+    local win = api.nvim_open_win(api.nvim_create_buf(false, false), false, {
       relative = 'editor',
       height = 1,
       width = 5,
       row = 1,
       col = 5,
     })
-    feed('float<esc><c-l>')
     screen:expect {
       grid = [[
-                                                                                      |
+      ^                                                                                |
-      {1:~    }{8:floa^t}{1:                                                                      }|
+      {1:~    }{8:     }{1:                                                                      }|
       {1:~                                                                               }|*3
       {MATCH:.*}|
       {1:~                                                                               }|
@@ -1666,18 +1666,20 @@ describe('ui/ext_messages', function()
       {1:~                }type  :help iccf{5:<Enter>}       for information {1:                 }|
       {1:~                                                                               }|*5
     ]],
+      showmode = showmode,
     }
+
     api.nvim_win_close(win, true)
-    screen:expect { grid = introscreen }
+    screen:expect { grid = introscreen, showmode = showmode }
 
     -- but editing text does..
-    feed('ix')
+    feed('x')
     screen:expect {
       grid = [[
       x^                                                                               |
       {1:~                                                                               }|*23
     ]],
-      showmode = { { '-- INSERT --', 3 } },
+      showmode = showmode,
     }
 
     feed('<esc>:intro<cr>')
@@ -1715,6 +1717,58 @@ describe('ui/ext_messages', function()
     }
   end)
 
+  it('clears intro screen when new buffer is active', function()
+    api.nvim_set_current_buf(api.nvim_create_buf(true, false))
+    screen:expect {
+      grid = [[
+      ^                                                                                |
+      {1:~                                                                               }|*23
+    ]],
+    }
+  end)
+
+  it('clears intro screen when new buffer is active in floating window', function()
+    local win_opts = { relative = 'editor', height = 1, width = 5, row = 1, col = 5 }
+    api.nvim_open_win(api.nvim_create_buf(false, false), true, win_opts)
+    screen:expect {
+      grid = [[
+                                                                                      |
+      {1:~    }{8:^     }{1:                                                                      }|
+      {1:~                                                                               }|*22
+    ]],
+    }
+  end)
+
+  it('clears intro screen when initial buffer is active in floating window', function()
+    local win_opts = { relative = 'editor', height = 1, width = 5, row = 1, col = 5 }
+    api.nvim_open_win(api.nvim_get_current_buf(), true, win_opts)
+    screen:expect {
+      grid = [[
+                                                                                      |
+      {1:~    }{8:^     }{1:                                                                      }|
+      {1:~                                                                               }|*22
+    ]],
+    }
+  end)
+
+  it('clears intro screen when initial window is converted to be floating', function()
+    exec_lua([[
+      local init_win_id = vim.api.nvim_get_current_win()
+      vim.cmd('split')
+      local win_opts = { relative = 'editor', height = 1, width = 5, row = 1, col = 5 }
+      vim.api.nvim_win_set_config(init_win_id, win_opts)
+      vim.api.nvim_set_current_win(init_win_id)
+    ]])
+    screen:expect {
+      grid = [[
+                                                                                      |
+      {1:~    }{8:^     }{1:                                                                      }|
+      {1:~                                                                               }|*21
+      {6:[No Name]                                                                       }|
+    ]],
+    }
+  end)
+
   it('supports global statusline', function()
     feed(':set laststatus=3<cr>')
     feed(':sp<cr>')