vim-patch:7.4.1751

Problem:    Crash when 'tagstack' is off. (Dominique Pelle)
Solution:   Fix it. (Hirohito Higashi)

def5abe0a2

src/nvim/tag.c

@@ -216,6 +216,10 @@ do_tag (
   if (!p_tgst && *tag != NUL) {
     use_tagstack = FALSE;
     new_tag = TRUE;
+    if (g_do_tagpreview != 0) {
+      xfree(ptag_entry.tagname);
+      ptag_entry.tagname = vim_strsave(tag);
+    }
   } else {
     if (g_do_tagpreview != 0)
       use_tagstack = FALSE;

src/nvim/testdir/test_alot.vim

@@ -18,5 +18,6 @@ source test_statusline.vim
 source test_syn_attr.vim
 source test_tabline.vim
 source test_tabpage.vim
+source test_tagjump.vim
 source test_unlet.vim
 source test_matchadd_conceal_utf8.vim

src/nvim/version.c

@@ -693,7 +693,7 @@ static int included_patches[] = {
   1753,
   // 1753,
   // 1752,
-  // 1751,
+  1751,
   // 1750 NA
   // 1749 NA
   1748,