Patch 8.2.4066
Problem:    Vim9: imported autoload script loaded again.
Solution:   Do not create a new imported_T every time.
Files:      src/vim9script.c, src/vim9compile.c,
            src/testdir/test_vim9_import.vim


*** ../vim-8.2.4065/src/vim9script.c    2022-01-10 21:29:53.380429159 +0000
--- src/vim9script.c    2022-01-12 10:25:00.628367892 +0000
***************
*** 250,255 ****
--- 250,257 ----
      void
  ex_export(exarg_T *eap)
  {
+     int           prev_did_emsg = did_emsg;
+ 
      if (!in_vim9script())
      {
        emsg(_(e_export_can_only_be_used_in_vim9script));
***************
*** 273,284 ****
            // The command will reset "is_export" when exporting an item.
            if (is_export)
            {
!               emsg(_(e_export_with_invalid_argument));
                is_export = FALSE;
            }
            break;
        default:
!           emsg(_(e_invalid_command_after_export));
            break;
      }
  }
--- 275,288 ----
            // The command will reset "is_export" when exporting an item.
            if (is_export)
            {
!               if (did_emsg == prev_did_emsg)
!                   emsg(_(e_export_with_invalid_argument));
                is_export = FALSE;
            }
            break;
        default:
!           if (did_emsg == prev_did_emsg)
!               emsg(_(e_invalid_command_after_export));
            break;
      }
  }
***************
*** 589,602 ****
                && check_defined(as_name, STRLEN(as_name), cctx, FALSE) == FAIL)
            goto erret;
  
-       imported = new_imported(import_gap);
        if (imported == NULL)
!           goto erret;
!       imported->imp_name = as_name;
!       as_name = NULL;
!       imported->imp_sid = sid;
!       if (is_autoload)
!           imported->imp_flags = IMP_FLAGS_AUTOLOAD;
      }
  
  erret:
--- 593,609 ----
                && check_defined(as_name, STRLEN(as_name), cctx, FALSE) == FAIL)
            goto erret;
  
        if (imported == NULL)
!       {
!           imported = new_imported(import_gap);
!           if (imported == NULL)
!               goto erret;
!           imported->imp_name = as_name;
!           as_name = NULL;
!           imported->imp_sid = sid;
!           if (is_autoload)
!               imported->imp_flags = IMP_FLAGS_AUTOLOAD;
!       }
      }
  
  erret:
*** ../vim-8.2.4065/src/vim9compile.c   2022-01-10 18:42:48.772314418 +0000
--- src/vim9compile.c   2022-01-12 11:44:01.115136906 +0000
***************
*** 623,632 ****
  
      if (ret != NULL && load && ret->imp_flags == IMP_FLAGS_AUTOLOAD)
      {
        // script found before but not loaded yet
        ret->imp_flags = 0;
        (void)do_source(SCRIPT_ITEM(ret->imp_sid)->sn_name, FALSE,
!                                                             DOSO_NONE, NULL);
      }
      return ret;
  }
--- 623,634 ----
  
      if (ret != NULL && load && ret->imp_flags == IMP_FLAGS_AUTOLOAD)
      {
+       scid_T dummy;
+ 
        // script found before but not loaded yet
        ret->imp_flags = 0;
        (void)do_source(SCRIPT_ITEM(ret->imp_sid)->sn_name, FALSE,
!                                                           DOSO_NONE, &dummy);
      }
      return ret;
  }
*** ../vim-8.2.4065/src/testdir/test_vim9_import.vim    2022-01-11 
15:24:01.307663435 +0000
--- src/testdir/test_vim9_import.vim    2022-01-12 11:38:51.572167619 +0000
***************
*** 1140,1146 ****
    # when using "vim9script autoload" prefix is not needed
    var lines =<< trim END
       vim9script autoload
!      g:prefixed_loaded = 'yes'
  
       export def Gettest(): string
         return 'test'
--- 1140,1146 ----
    # when using "vim9script autoload" prefix is not needed
    var lines =<< trim END
       vim9script autoload
!      g:prefixed_loaded += 1
  
       export def Gettest(): string
         return 'test'
***************
*** 1156,1167 ****
    END
    writefile(lines, 'Xdir/autoload/prefixed.vim')
  
    lines =<< trim END
        vim9script
        import autoload 'prefixed.vim'
!       assert_false(exists('g:prefixed_loaded'))
        assert_equal('test', prefixed.Gettest())
!       assert_equal('yes', g:prefixed_loaded)
  
        assert_equal('testmore', prefixed.GetMore())
        assert_equal('name', prefixed.name)
--- 1156,1169 ----
    END
    writefile(lines, 'Xdir/autoload/prefixed.vim')
  
+   g:prefixed_loaded = 0
+   g:expected_loaded = 0
    lines =<< trim END
        vim9script
        import autoload 'prefixed.vim'
!       assert_equal(g:expected_loaded, g:prefixed_loaded)
        assert_equal('test', prefixed.Gettest())
!       assert_equal(1, g:prefixed_loaded)
  
        assert_equal('testmore', prefixed.GetMore())
        assert_equal('name', prefixed.name)
***************
*** 1169,1174 ****
--- 1171,1179 ----
        assert_equal('const', prefixed.cname)
    END
    CheckScriptSuccess(lines)
+   # can source it again, autoload script not loaded again
+   g:expected_loaded = 1
+   CheckScriptSuccess(lines)
  
    # can also get the items by autoload name
    lines =<< trim END
*** ../vim-8.2.4065/src/version.c       2022-01-11 19:34:12.449500357 +0000
--- src/version.c       2022-01-12 10:26:29.424087465 +0000
***************
*** 752,753 ****
--- 752,755 ----
  {   /* Add new patch number below this line */
+ /**/
+     4066,
  /**/

-- 
If I tell you "you have a beautiful body", would you hold it against me?

 /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
///                                                                      \\\
\\\        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///

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