Merge pull request #17488 from seandewar/vim-8.2.4428

vim-patch:8.2.{1401,1413,4428,4432,4434,4438,4442,4444,4445,4454}: tabpage patches

14 files changed, 195 insertions, 39 deletions

diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index ccc02e83b2..9eec23b7b7 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -8103,15 +8103,15 @@ tabpagebuflist([{arg}])					*tabpagebuflist()*
 tabpagenr([{arg}])					*tabpagenr()*
 		The result is a Number, which is the number of the current
 		tab page.  The first tab page has number 1.
+
 		The optional argument {arg} supports the following values:
 			$	the number of the last tab page (the tab page
 				count).
-			#	the number of the last accessed tab page (where
-				|g<Tab>| goes to).  If there is no previous
-				tab page, 0 is returned.
+			#	the number of the last accessed tab page
+				(where |g<Tab>| goes to).  If there is no
+				previous tab page, 0 is returned.
 		The number can be used with the |:tab| command.
 
-
 tabpagewinnr({tabarg} [, {arg}])			*tabpagewinnr()*
 		Like |winnr()| but for tab page {tabarg}.
 		{tabarg} specifies the number of tab page to be used.
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index d02ab1b759..572b4e3f93 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -431,6 +431,7 @@ tag		char	      note action in Normal mode	~
 |<C-LeftMouse>|	<C-LeftMouse>	   ":ta" to the keyword at the mouse click
 |<C-Right>|	<C-Right>	1  same as "w"
 |<C-RightMouse>| <C-RightMouse>	   same as "CTRL-T"
+|<C-Tab>|	<C-Tab>		   same as "g<Tab>"
 |<Del>|		["x]<Del>	2  same as "x"
 |N<Del>|	{count}<Del>	   remove the last digit from {count}
 |<Down>|	<Down>		1  same as "j"
@@ -577,7 +578,7 @@ tag		command		   action in Normal mode	~
 				   following the file name.
 |CTRL-W_gt|	CTRL-W g t	   same as `gt`: go to next tab page
 |CTRL-W_gT|	CTRL-W g T	   same as `gT`: go to previous tab page
-|CTRL-W_g<Tab>|	CTRL-W g <Tab>	   same as `g<Tab>` : go to last accessed tab
+|CTRL-W_g<Tab>|	CTRL-W g <Tab>	   same as |g<Tab>|: go to last accessed tab
 				   page
 |CTRL-W_h|	CTRL-W h	   go to Nth left window (stop at first window)
 |CTRL-W_i|	CTRL-W i	   split window and jump to declaration of
diff --git a/runtime/doc/tabpage.txt b/runtime/doc/tabpage.txt
index 78b5101da7..f06a6bcc34 100644
--- a/runtime/doc/tabpage.txt
+++ b/runtime/doc/tabpage.txt
@@ -196,10 +196,6 @@ gt					*i_CTRL-<PageDown>* *i_<C-PageDown>*
 {count}<C-PageDown>
 {count}gt	Go to tab page {count}.  The first tab page has number one.
 
-CTRL-<Tab>					*CTRL-<Tab>*
-CTRL-W g<Tab>					*g<Tab>* *CTRL-W_g<Tab>*
-g<Tab>		Go to previous (last accessed) tab page.
-
 :tabp[revious]				*:tabp* *:tabprevious* *gT* *:tabN*
 :tabN[ext]				*:tabNext* *CTRL-<PageUp>*
 <C-PageUp>			 *<C-PageUp>* *i_CTRL-<PageUp>* *i_<C-PageUp>*
@@ -219,6 +215,9 @@ gT		Go to the previous tab page.  Wraps around from the first one
 							*:tabl* *:tablast*
 :tabl[ast]	Go to the last tab page.
 
+<C-Tab>						*CTRL-<Tab>* *<C-Tab>*
+CTRL-W g<Tab>					*g<Tab>* *CTRL-W_g<Tab>*
+g<Tab>		Go to the last accessed tab page.
 
 Other commands:
 							*:tabs*
diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index 18b9039d60..b2ce15fd87 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -3257,9 +3257,7 @@ char_u *get_user_var_name(expand_T *xp, int idx)
   }
 
   // b: variables
-  // In cmdwin, the alternative buffer should be used.
-  hashtab_T *ht
-    = is_in_cmdwin() ? &prevwin->w_buffer->b_vars->dv_hashtab : &curbuf->b_vars->dv_hashtab;
+  const hashtab_T *ht = &prevwin_curwin()->w_buffer->b_vars->dv_hashtab;
   if (bdone < ht->ht_used) {
     if (bdone++ == 0) {
       hi = ht->ht_array;
@@ -3273,8 +3271,7 @@ char_u *get_user_var_name(expand_T *xp, int idx)
   }
 
   // w: variables
-  // In cmdwin, the alternative window should be used.
-  ht = is_in_cmdwin() ? &prevwin->w_vars->dv_hashtab : &curwin->w_vars->dv_hashtab;
+  ht = &prevwin_curwin()->w_vars->dv_hashtab;
   if (wdone < ht->ht_used) {
     if (wdone++ == 0) {
       hi = ht->ht_array;
diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index b249dffe11..b74f9759ac 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -11213,9 +11213,7 @@ static void f_tabpagenr(typval_T *argvars, typval_T *rettv, FunPtr fptr)
       if (strcmp(arg, "$") == 0) {
         nr = tabpage_index(NULL) - 1;
       } else if (strcmp(arg, "#") == 0) {
-        nr = valid_tabpage(lastused_tabpage)
-             ? tabpage_index(lastused_tabpage)
-             : nr;
+        nr = valid_tabpage(lastused_tabpage) ? tabpage_index(lastused_tabpage) : 0;
       } else {
         semsg(_(e_invexpr2), arg);
       }
diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index 63dc1e539e..09cf6601ee 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -2036,6 +2036,18 @@ doend:
   return ea.nextcmd;
 }
 
+static char ex_error_buf[MSG_BUF_LEN];
+
+/// @return an error message with argument included.
+/// Uses a static buffer, only the last error will be kept.
+/// "msg" will be translated, caller should use N_().
+char *ex_errmsg(const char *const msg, const char_u *const arg)
+  FUNC_ATTR_NONNULL_ALL
+{
+  vim_snprintf(ex_error_buf, MSG_BUF_LEN, _(msg), arg);
+  return ex_error_buf;
+}
+
 // Parse and skip over command modifiers:
 // - update eap->cmd
 // - store flags in "cmdmod".
@@ -2704,7 +2716,7 @@ static char_u *find_ucmd(exarg_T *eap, char_u *p, int *full, expand_T *xp, int *
                                      // only full match global is accepted.
 
   // Look for buffer-local user commands first, then global ones.
-  gap = is_in_cmdwin() ? &prevwin->w_buffer->b_ucmds : &curbuf->b_ucmds;
+  gap = &prevwin_curwin()->w_buffer->b_ucmds;
   for (;;) {
     for (j = 0; j < gap->ga_len; j++) {
       uc = USER_CMD_GA(gap, j);
@@ -4861,7 +4873,13 @@ static int get_tabpage_arg(exarg_T *eap)
       if (STRCMP(p, "$") == 0) {
         tab_number = LAST_TAB_NR;
       } else if (STRCMP(p, "#") == 0) {
-        tab_number = tabpage_index(lastused_tabpage);
+        if (valid_tabpage(lastused_tabpage)) {
+          tab_number = tabpage_index(lastused_tabpage);
+        } else {
+          eap->errmsg = ex_errmsg(e_invargval, eap->arg);
+          tab_number = 0;
+          goto theend;
+        }
       } else if (p == p_save || *p_save == '-' || *p != NUL
                  || tab_number > LAST_TAB_NR) {
         // No numbers as argument.
@@ -5378,7 +5396,7 @@ static void uc_list(char_u *name, size_t name_len)
   uint32_t a;
 
   // In cmdwin, the alternative buffer should be used.
-  garray_T *gap = is_in_cmdwin() ? &prevwin->w_buffer->b_ucmds : &curbuf->b_ucmds;
+  const garray_T *gap = &prevwin_curwin()->w_buffer->b_ucmds;
   for (;;) {
     for (i = 0; i < gap->ga_len; i++) {
       cmd = USER_CMD_GA(gap, i);
@@ -6357,7 +6375,7 @@ char_u *get_user_commands(expand_T *xp FUNC_ATTR_UNUSED, int idx)
   FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
 {
   // In cmdwin, the alternative buffer should be used.
-  const buf_T *const buf = is_in_cmdwin() ? prevwin->w_buffer : curbuf;
+  const buf_T *const buf = prevwin_curwin()->w_buffer;
 
   if (idx < buf->b_ucmds.ga_len) {
     return USER_CMD_GA(&buf->b_ucmds, idx)->uc_name;
@@ -6379,7 +6397,8 @@ static char_u *get_user_command_name(int idx, int cmdidx)
   }
   if (cmdidx == CMD_USER_BUF) {
     // In cmdwin, the alternative buffer should be used.
-    buf_T *buf = is_in_cmdwin() ? prevwin->w_buffer : curbuf;
+    const buf_T *const buf = prevwin_curwin()->w_buffer;
+
     if (idx < buf->b_ucmds.ga_len) {
       return USER_CMD_GA(&buf->b_ucmds, idx)->uc_name;
     }
diff --git a/src/nvim/ex_getln.c b/src/nvim/ex_getln.c
index 30287cd6f2..f52f3afe7d 100644
--- a/src/nvim/ex_getln.c
+++ b/src/nvim/ex_getln.c
@@ -6589,7 +6589,7 @@ static int open_cmdwin(void)
 
 /// @return true if in the cmdwin, not editing the command line.
 bool is_in_cmdwin(void)
-  FUNC_ATTR_PURE
+  FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
 {
   return cmdwin_type != 0 && get_cmdline_type() == NUL;
 }
diff --git a/src/nvim/globals.h b/src/nvim/globals.h
index b64ed7c758..cbd67afb09 100644
--- a/src/nvim/globals.h
+++ b/src/nvim/globals.h
@@ -448,10 +448,11 @@ EXTERN int aucmd_win_used INIT(= false);  // aucmd_win is being used
 EXTERN frame_T *topframe;      // top of the window frame tree
 
 // Tab pages are alternative topframes.  "first_tabpage" points to the first
-// one in the list, "curtab" is the current one.
+// one in the list, "curtab" is the current one. "lastused_tabpage" is the
+// last used one.
 EXTERN tabpage_T *first_tabpage;
-EXTERN tabpage_T *lastused_tabpage;
 EXTERN tabpage_T *curtab;
+EXTERN tabpage_T *lastused_tabpage;
 EXTERN bool redraw_tabline INIT(= false);  // need to redraw tabline
 
 // Iterates over all tabs in the tab list
diff --git a/src/nvim/normal.c b/src/nvim/normal.c
index 0e5e0ab403..f402865d2d 100644
--- a/src/nvim/normal.c
+++ b/src/nvim/normal.c
@@ -5869,7 +5869,7 @@ static void nv_gomark(cmdarg_T *cap)
   }
 }
 
-// Handle CTRL-O, CTRL-I, "g;", "g,", and "CTRL-Tab" commands.
+/// Handle CTRL-O, CTRL-I, "g;", "g,", and "CTRL-Tab" commands.
 static void nv_pcmark(cmdarg_T *cap)
 {
   pos_T *pos;
@@ -5878,7 +5878,9 @@ static void nv_pcmark(cmdarg_T *cap)
 
   if (!checkclearopq(cap->oap)) {
     if (cap->cmdchar == TAB && mod_mask == MOD_MASK_CTRL) {
-      goto_tabpage_lastused();
+      if (!goto_tabpage_lastused()) {
+        clearopbeep(cap->oap);
+      }
       return;
     }
     if (cap->cmdchar == 'g') {
@@ -6642,9 +6644,10 @@ static void nv_g_cmd(cmdarg_T *cap)
       goto_tabpage(-(int)cap->count1);
     }
     break;
+
   case TAB:
-    if (!checkclearop(oap)) {
-      goto_tabpage_lastused();
+    if (!checkclearop(oap) && !goto_tabpage_lastused()) {
+      clearopbeep(oap);
     }
     break;
 
diff --git a/src/nvim/testdir/check.vim b/src/nvim/testdir/check.vim
index 883f036fe1..8f97d959ce 100644
--- a/src/nvim/testdir/check.vim
+++ b/src/nvim/testdir/check.vim
@@ -137,6 +137,14 @@ func CheckNotMSWindows()
   endif
 endfunc
 
+" Command to check for not running under ASAN
+command CheckNotAsan call CheckNotAsan()
+func CheckNotAsan()
+  if execute('version') =~# '-fsanitize=[a-z,]*\<address\>'
+    throw 'Skipped: does not work with ASAN'
+  endif
+endfunc
+
 " Command to check for satisfying any of the conditions.
 " e.g. CheckAnyOf Feature:bsd Feature:sun Linux
 command -nargs=+ CheckAnyOf call CheckAnyOf(<f-args>)
diff --git a/src/nvim/testdir/test_cmdline.vim b/src/nvim/testdir/test_cmdline.vim
index ff4cbe544c..c589d941da 100644
--- a/src/nvim/testdir/test_cmdline.vim
+++ b/src/nvim/testdir/test_cmdline.vim
@@ -1123,6 +1123,18 @@ func Test_cmdlineclear_tabenter()
   call delete('XtestCmdlineClearTabenter')
 endfunc
 
+func Test_cmdwin_tabpage()
+  tabedit
+  " v8.2.1919 isn't ported yet, so E492 is thrown after E11 here.
+  " v8.2.1183 also isn't ported yet, so we also can't assert E11 directly.
+  " For now, assert E11 and E492 seperately. When v8.2.1183 is ported, the
+  " assert for E492 will fail and this workaround should be removed.
+  " call assert_fails("silent norm q/g	:I\<Esc>", 'E11:')
+  call assert_fails("silent norm q/g	", 'E11:')
+  call assert_fails("silent norm q/g	:I\<Esc>", 'E492:')
+  tabclose!
+endfunc
+
 " test that ";" works to find a match at the start of the first line
 func Test_zero_line_search()
   new
diff --git a/src/nvim/testdir/test_exit.vim b/src/nvim/testdir/test_exit.vim
index bd3e9eb4d4..befcaec2b2 100644
--- a/src/nvim/testdir/test_exit.vim
+++ b/src/nvim/testdir/test_exit.vim
@@ -1,6 +1,7 @@
 " Tests for exiting Vim.
 
 source shared.vim
+source check.vim
 
 func Test_exiting()
   let after =<< trim [CODE]
@@ -109,4 +110,25 @@ func Test_exit_code()
   call delete('Xtestout')
 endfunc
 
+func Test_exit_error_reading_input()
+  throw 'Skipped: Nvim does not exit after stdin is read'
+
+  CheckNotGui
+  CheckNotMSWindows
+  " The early exit causes memory not to be freed somehow
+  CheckNotAsan
+
+  call writefile([":au VimLeave * call writefile(['l = ' .. v:exiting], 'Xtestout')", ":tabnew", "q:"], 'Xscript', 'b')
+
+  " Nvim requires "-s -" to read stdin as Normal mode input
+  " if RunVim([], [], '<Xscript')
+  if RunVim([], [], '-s - <Xscript')
+    call assert_equal(1, v:shell_error)
+    call assert_equal(['l = 1'], readfile('Xtestout'))
+  endif
+  call delete('Xscript')
+  call delete('Xtestout')
+endfun
+
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_tabpage.vim b/src/nvim/testdir/test_tabpage.vim
index 9869dc7590..51ab5c1022 100644
--- a/src/nvim/testdir/test_tabpage.vim
+++ b/src/nvim/testdir/test_tabpage.vim
@@ -128,6 +128,8 @@ function Test_tabpage()
   1tabmove
   call assert_equal(2, tabpagenr())
 
+  call assert_fails('let t = tabpagenr("@")', 'E15:')
+  call assert_equal(0, tabpagewinnr(-1))
   call assert_fails("99tabmove", 'E16:')
   call assert_fails("+99tabmove", 'E16:')
   call assert_fails("-99tabmove", 'E16:')
@@ -683,4 +685,73 @@ func Test_tabline_tabmenu()
   %bw!
 endfunc
 
+" Test for jumping to last accessed tabpage
+func Test_lastused_tabpage()
+  tabonly!
+  call assert_equal(0, tabpagenr('#'))
+  call assert_beeps('call feedkeys("g\<Tab>", "xt")')
+  call assert_beeps('call feedkeys("\<C-Tab>", "xt")')
+  call assert_beeps('call feedkeys("\<C-W>g\<Tab>", "xt")')
+  call assert_fails('tabnext #', 'E475:')
+
+  " open four tab pages
+  tabnew
+  tabnew
+  tabnew
+
+  2tabnext
+
+  " Test for g<Tab>
+  call assert_equal(4, tabpagenr('#'))
+  call feedkeys("g\<Tab>", "xt")
+  call assert_equal(4, tabpagenr())
+  call assert_equal(2, tabpagenr('#'))
+
+  " Test for <C-Tab>
+  call feedkeys("\<C-Tab>", "xt")
+  call assert_equal(2, tabpagenr())
+  call assert_equal(4, tabpagenr('#'))
+
+  " Test for <C-W>g<Tab>
+  call feedkeys("\<C-W>g\<Tab>", "xt")
+  call assert_equal(4, tabpagenr())
+  call assert_equal(2, tabpagenr('#'))
+
+  " Test for :tabnext #
+  tabnext #
+  call assert_equal(2, tabpagenr())
+  call assert_equal(4, tabpagenr('#'))
+
+  " Try to jump to a closed tab page
+  tabclose #
+  call assert_equal(0, tabpagenr('#'))
+  call feedkeys("g\<Tab>", "xt")
+  call assert_equal(2, tabpagenr())
+  call feedkeys("\<C-Tab>", "xt")
+  call assert_equal(2, tabpagenr())
+  call feedkeys("\<C-W>g\<Tab>", "xt")
+  call assert_equal(2, tabpagenr())
+  call assert_fails('tabnext #', 'E475:')
+  call assert_equal(2, tabpagenr())
+
+  " Test for :tabonly #
+  let wnum = win_getid()
+  $tabnew
+  tabonly #
+  call assert_equal(wnum, win_getid())
+  call assert_equal(1, tabpagenr('$'))
+
+  " Test for :tabmove #
+  tabnew
+  let wnum = win_getid()
+  tabnew
+  tabnew
+  tabnext 2
+  tabmove #
+  call assert_equal(4, tabpagenr())
+  call assert_equal(wnum, win_getid())
+
+  tabonly!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/window.c b/src/nvim/window.c
index d659f60e66..a235b07b47 100644
--- a/src/nvim/window.c
+++ b/src/nvim/window.c
@@ -73,6 +73,15 @@ typedef enum {
 
 static char *m_onlyone = N_("Already only one window");
 
+/// @return the current window, unless in the cmdline window and "prevwin" is
+/// set, then return "prevwin".
+win_T *prevwin_curwin(void)
+  FUNC_ATTR_WARN_UNUSED_RESULT
+{
+  // In cmdwin, the alternative buffer should be used.
+  return is_in_cmdwin() && prevwin != NULL ? prevwin : curwin;
+}
+
 /// all CTRL-W window commands are handled here, called from normal_cmd().
 ///
 /// @param xchar  extra char from ":wincmd gx" or NUL
@@ -521,10 +530,6 @@ wingotofile:
       do_nv_ident('g', xchar);
       break;
 
-    case TAB:
-      goto_tabpage_lastused();
-      break;
-
     case 'f':                       // CTRL-W gf: "gf" in a new tab page
     case 'F':                       // CTRL-W gF: "gF" in a new tab page
       cmdmod.tab = tabpage_index(curtab) + 1;
@@ -538,6 +543,12 @@ wingotofile:
       goto_tabpage(-(int)Prenum1);
       break;
 
+    case TAB:                       // CTRL-W g<Tab>: go to last used tab page
+      if (!goto_tabpage_lastused()) {
+        beep_flush();
+      }
+      break;
+
     case 'e':
       if (curwin->w_floating || !ui_has(kUIMultigrid)) {
         beep_flush();
@@ -2895,6 +2906,9 @@ void win_free_all(void)
 {
   int dummy;
 
+  // avoid an error for switching tabpage with the cmdline window open
+  cmdwin_type = 0;
+
   while (first_tabpage->tp_next != NULL) {
     tabpage_close(TRUE);
   }
@@ -3857,6 +3871,11 @@ int win_new_tabpage(int after, char_u *filename)
   tabpage_T *newtp;
   int n;
 
+  if (cmdwin_type != 0) {
+    emsg(_(e_cmdwin));
+    return FAIL;
+  }
+
   newtp = alloc_tabpage();
 
   // Remember the current windows in this Tab page.
@@ -4102,8 +4121,8 @@ static void enter_tabpage(tabpage_T *tp, buf_T *old_curbuf, bool trigger_enter_a
 {
   int old_off = tp->tp_firstwin->w_winrow;
   win_T *next_prevwin = tp->tp_prevwin;
-
   tabpage_T *old_curtab = curtab;
+
   curtab = tp;
   firstwin = tp->tp_firstwin;
   lastwin = tp->tp_lastwin;
@@ -4255,6 +4274,10 @@ void goto_tabpage(int n)
 /// @param trigger_leave_autocmds  when true trigger *Leave autocommands.
 void goto_tabpage_tp(tabpage_T *tp, bool trigger_enter_autocmds, bool trigger_leave_autocmds)
 {
+  if (trigger_enter_autocmds || trigger_leave_autocmds) {
+    CHECK_CMDWIN;
+  }
+
   // Don't repeat a message in another tab page.
   set_keep_msg(NULL, 0);
 
@@ -4270,13 +4293,15 @@ void goto_tabpage_tp(tabpage_T *tp, bool trigger_enter_autocmds, bool trigger_le
   }
 }
 
-// Go to the last accessed tab page, if there is one.
-void goto_tabpage_lastused(void)
+/// Go to the last accessed tab page, if there is one.
+/// @return true if the tab page is valid, false otherwise.
+bool goto_tabpage_lastused(void)
 {
-  int index = tabpage_index(lastused_tabpage);
-  if (index < tabpage_index(NULL)) {
-    goto_tabpage(index);
+  if (valid_tabpage(lastused_tabpage)) {
+    goto_tabpage_tp(lastused_tabpage, true, true);
+    return true;
   }
+  return false;
 }
 
 /*