Merge pull request #19373 from zeertzjq/vim-8.2.0426

vim-patch:8.0.1118,8.2.0426

src/nvim/buffer.c

@@ -94,11 +94,19 @@ static char *e_buflocked = N_("E937: Attempt to delete a buffer that is in use")
 // Number of times free_buffer() was called.
 static int buf_free_count = 0;
 
+static int top_file_num = 1;            ///< highest file number
+
 typedef enum {
   kBffClearWinInfo = 1,
   kBffInitChangedtick = 2,
 } BufFreeFlags;
 
+/// @return  the highest possible buffer number
+int get_highest_fnum(void)
+{
+  return top_file_num - 1;
+}
+
 /// Read data from buffer for retrying.
 ///
 /// @param read_stdin  read file from stdin, otherwise fifo
@@ -443,6 +451,7 @@ bool close_buffer(win_T *win, buf_T *buf, int action, bool abort_if_last, bool i
     return false;
   }
 
+  // check no autocommands closed the window
   if (win != NULL  // Avoid bogus clang warning.
       && win_valid_any_tab(win)) {
     // Set b_last_cursor when closing the last window for the buffer.
@@ -1643,8 +1652,6 @@ void no_write_message_nobang(const buf_T *const buf)
 // functions for dealing with the buffer list
 //
 
-static int top_file_num = 1;            ///< highest file number
-
 /// Initialize b:changedtick and changedtick_val attribute
 ///
 /// @param[out]  buf  Buffer to initialize for.

src/nvim/ex_cmds.c

@@ -4862,8 +4862,7 @@ void ex_help(exarg_T *eap)
    * Re-use an existing help window or open a new one.
    * Always open a new one for ":tab help".
    */
-  if (!bt_help(curwin->w_buffer)
+  if (!bt_help(curwin->w_buffer) || cmdmod.cmod_tab != 0) {
-      || cmdmod.cmod_tab != 0) {
     if (cmdmod.cmod_tab != 0) {
       wp = NULL;
     } else {

src/nvim/ex_cmds2.c

@@ -1018,8 +1018,7 @@ void check_arg_idx(win_T *win)
     // We are editing the current entry in the argument list.
     // Set "arg_had_last" if it's also the last one
     win->w_arg_idx_invalid = false;
-    if (win->w_arg_idx == WARGCOUNT(win) - 1
+    if (win->w_arg_idx == WARGCOUNT(win) - 1 && win->w_alist == &global_alist) {
-        && win->w_alist == &global_alist) {
       arg_had_last = true;
     }
   }
@@ -1150,8 +1149,7 @@ void do_argfile(exarg_T *eap, int argn)
     }
 
     curwin->w_arg_idx = argn;
-    if (argn == ARGCOUNT - 1
+    if (argn == ARGCOUNT - 1 && curwin->w_alist == &global_alist) {
-        && curwin->w_alist == &global_alist) {
       arg_had_last = true;
     }
 

src/nvim/ex_docmd.c

@@ -4616,8 +4616,9 @@ char *invalid_range(exarg_T *eap)
       }
       break;
     case ADDR_BUFFERS:
-      if (eap->line1 < firstbuf->b_fnum
+      // Only a boundary check, not whether the buffers actually
-          || eap->line2 > lastbuf->b_fnum) {
+      // exist.
+      if (eap->line1 < 1 || eap->line2 > get_highest_fnum()) {
         return _(e_invrange);
       }
       break;

src/nvim/move.c

@@ -786,8 +786,7 @@ void curs_columns(win_T *wp, int may_scroll)
     } else {
       wp->w_wrow = wp->w_height_inner - 1 - wp->w_empty_rows;
     }
-  } else if (wp->w_p_wrap
+  } else if (wp->w_p_wrap && wp->w_width_inner != 0) {
-             && wp->w_width_inner != 0) {
     width = textwidth + win_col_off2(wp);
 
     // long line wrapping, adjust wp->w_wrow
@@ -1083,8 +1082,7 @@ bool scrolldown(long line_count, int byfold)
    * and move the cursor onto the displayed part of the window.
    */
   int wrow = curwin->w_wrow;
-  if (curwin->w_p_wrap
+  if (curwin->w_p_wrap && curwin->w_width_inner != 0) {
-      && curwin->w_width_inner != 0) {
     validate_virtcol();
     validate_cheight();
     wrow += curwin->w_cline_height - 1 -

src/nvim/normal.c

@@ -6012,8 +6012,7 @@ static void nv_g_home_m_cmd(cmdarg_T *cap)
 
   cap->oap->motion_type = kMTCharWise;
   cap->oap->inclusive = false;
-  if (curwin->w_p_wrap
+  if (curwin->w_p_wrap && curwin->w_width_inner != 0) {
-      && curwin->w_width_inner != 0) {
     int width1 = curwin->w_width_inner - curwin_col_off();
     int width2 = width1 + curwin_col_off2();
 

src/nvim/tag.c

@@ -1863,6 +1863,7 @@ parse_line:
         // For "normal" tags: Do a quick check if the tag matches.
         // This speeds up tag searching a lot!
         if (orgpat.headlen) {
+          memset(&tagp, 0, sizeof(tagp));
           tagp.tagname = lbuf;
           tagp.tagname_end = (char_u *)vim_strchr((char *)lbuf, TAB);
           if (tagp.tagname_end == NULL) {
@@ -2784,7 +2785,7 @@ static int jumpto_tag(const char_u *lbuf_arg, int forceit, int keep_help)
     // A :ta from a help file will keep the b_help flag set.  For ":ptag"
     // we need to use the flag from the window where we came from.
     if (l_g_do_tagpreview != 0) {
-      keep_help_flag = curwin_save->w_buffer->b_help;
+      keep_help_flag = bt_help(curwin_save->w_buffer);
     } else {
       keep_help_flag = curbuf->b_help;
     }

src/nvim/testdir/test_buffer.vim

@@ -146,6 +146,7 @@ endfunc
 func Test_bdelete_cmd()
   %bwipe!
   call assert_fails('bdelete 5', 'E516:')
+  call assert_fails('1,1bdelete 1 2', 'E488:')
 
   " Deleting a unlisted and unloaded buffer
   edit Xfile1

src/nvim/testdir/test_normal.vim

@@ -2656,7 +2656,7 @@ func Test_normal49_counts()
 endfunc
 
 func Test_normal50_commandline()
-  if !has("timers") || !has("cmdline_hist") || !has("vertsplit")
+  if !has("timers") || !has("cmdline_hist")
     return
   endif
   func! DoTimerWork(id)

src/nvim/testdir/test_options.vim

@@ -290,9 +290,10 @@ func Test_set_errors()
   call assert_fails('set regexpengine=3', 'E474:')
   call assert_fails('set history=10001', 'E474:')
   call assert_fails('set numberwidth=21', 'E474:')
-  call assert_fails('set colorcolumn=-a')
+  call assert_fails('set colorcolumn=-a', 'E474:')
-  call assert_fails('set colorcolumn=a')
+  call assert_fails('set colorcolumn=a', 'E474:')
-  call assert_fails('set colorcolumn=1,')
+  call assert_fails('set colorcolumn=1,', 'E474:')
+  call assert_fails('set colorcolumn=1;', 'E474:')
   call assert_fails('set cmdheight=-1', 'E487:')
   call assert_fails('set cmdwinheight=-1', 'E487:')
   if has('conceal')
@@ -343,9 +344,13 @@ func Test_set_errors()
     call assert_fails('set guicursor=i-ci,r-cr:h', 'E545:')
     call assert_fails('set guicursor=i-ci', 'E545:')
     call assert_fails('set guicursor=x', 'E545:')
+    call assert_fails('set guicursor=x:', 'E546:')
     call assert_fails('set guicursor=r-cr:horx', 'E548:')
     call assert_fails('set guicursor=r-cr:hor0', 'E549:')
   endif
+  if has('mouseshape')
+    call assert_fails('se mouseshape=i-r:x', 'E547:')
+  endif
   call assert_fails('set backupext=~ patchmode=~', 'E589:')
   call assert_fails('set winminheight=10 winheight=9', 'E591:')
   call assert_fails('set winminwidth=10 winwidth=9', 'E592:')

src/nvim/testdir/test_window_cmd.vim

@@ -172,6 +172,35 @@ func Test_window_split_edit_bufnr()
   %bw!
 endfunc
 
+func Test_window_split_no_room()
+  " N horizontal windows need >= 2*N + 1 lines:
+  " - 1 line + 1 status line in each window
+  " - 1 Ex command line
+  "
+  " 2*N + 1 <= &lines
+  " N <= (lines - 1)/2
+  "
+  " Beyond that number of windows, E36: Not enough room is expected.
+  let hor_win_count = (&lines - 1)/2
+  let hor_split_count = hor_win_count - 1
+  for s in range(1, hor_split_count) | split | endfor
+  call assert_fails('split', 'E36:')
+
+  " N vertical windows need >= 2*(N - 1) + 1 columns:
+  " - 1 column + 1 separator for each window (except last window)
+  " - 1 column for the last window which does not have separator
+  "
+  " 2*(N - 1) + 1 <= &columns
+  " 2*N - 1 <= &columns
+  " N <= (&columns + 1)/2
+  let ver_win_count = (&columns + 1)/2
+  let ver_split_count = ver_win_count - 1
+  for s in range(1, ver_split_count) | vsplit | endfor
+  call assert_fails('vsplit', 'E36:')
+
+  %bw!
+endfunc
+
 func Test_window_exchange()
   e Xa