Patch 8.2.1838
Problem:    Vim9: cannot insert a comment line in an expression.
Solution:   Skip comment lines at the script level. (closes #7111)
Files:      src/eval.c, src/testdir/test_vim9_expr.vim


*** ../vim-8.2.1837/src/eval.c  2020-10-10 14:12:58.024646147 +0200
--- src/eval.c  2020-10-11 21:20:33.830616663 +0200
***************
*** 1968,1973 ****
--- 1968,1996 ----
  }
  
  /*
+  * Get the next line source line without advancing.  But do skip over comment
+  * lines.
+  */
+     static char_u *
+ getline_peek_skip_comments(evalarg_T *evalarg)
+ {
+     for (;;)
+     {
+       char_u *next = getline_peek(evalarg->eval_getline,
+                                                        evalarg->eval_cookie);
+       char_u *p;
+ 
+       if (next == NULL)
+           break;
+       p = skipwhite(next);
+       if (*p != NUL && !vim9_comment_start(p))
+           return next;
+       (void)eval_next_line(evalarg);
+     }
+     return NULL;
+ }
+ 
+ /*
   * If inside Vim9 script, "arg" points to the end of a line (ignoring a #
   * comment) and there is a next line, return the next line (skipping blanks)
   * and set "getnext".
***************
*** 1988,1994 ****
        char_u *next;
  
        if (evalarg->eval_cookie != NULL)
!           next = getline_peek(evalarg->eval_getline, evalarg->eval_cookie);
        else
            next = peek_next_line_from_context(evalarg->eval_cctx);
  
--- 2011,2017 ----
        char_u *next;
  
        if (evalarg->eval_cookie != NULL)
!           next = getline_peek_skip_comments(evalarg);
        else
            next = peek_next_line_from_context(evalarg->eval_cctx);
  
*** ../vim-8.2.1837/src/testdir/test_vim9_expr.vim      2020-10-05 
19:23:56.216436744 +0200
--- src/testdir/test_vim9_expr.vim      2020-10-11 21:32:25.683807747 +0200
***************
*** 90,95 ****
--- 90,105 ----
    END
    CheckScriptSuccess(lines)
  
+   lines =<< trim END
+       vim9script
+       var name = v:false ?  # comment
+                       'yes' :
+                 # comment
+               'no' # comment
+       assert_equal('no', name)
+   END
+   CheckScriptSuccess(lines)
+ 
    # check white space
    lines =<< trim END
        vim9script
***************
*** 279,284 ****
--- 289,305 ----
    END
    CheckScriptSuccess(lines)
  
+   lines =<< trim END
+       vim9script
+       var name = v:false || # comment
+                 # comment
+                       v:true ||
+                 # comment
+               v:false # comment
+       assert_equal(v:true, name)
+   END
+   CheckScriptSuccess(lines)
+ 
    # check white space
    lines =<< trim END
        vim9script
***************
*** 405,410 ****
--- 426,442 ----
    END
    CheckScriptSuccess(lines)
  
+   lines =<< trim END
+       vim9script
+       var name = v:true &&  # comment
+                 # comment
+                       v:true &&
+                 # comment
+                       v:true
+       assert_equal(v:true, name)
+   END
+   CheckScriptSuccess(lines)
+ 
    # check white space
    lines =<< trim END
        vim9script
***************
*** 800,805 ****
--- 832,838 ----
    lines =<< trim END
        vim9script
        var name = 123
+                 # comment
                        != 123
        assert_equal(false, name)
    END
***************
*** 824,829 ****
--- 857,872 ----
  
    lines =<< trim END
        vim9script
+       var list = [1, 2, 3]
+       var name = list # comment
+                  # comment
+                       is list
+       assert_equal(true, name)
+   END
+   CheckScriptSuccess(lines)
+ 
+   lines =<< trim END
+       vim9script
        var myblob = 0z1234
        var name = myblob
                        isnot 0z11
***************
*** 1059,1064 ****
--- 1102,1117 ----
  
    lines =<< trim END
        vim9script
+       var name = 11 +  # comment
+                 77 -
+                   # comment
+                 22
+       assert_equal(66, name)
+   END
+   CheckScriptSuccess(lines)
+ 
+   lines =<< trim END
+       vim9script
        var name = 'one'
                        .. 'two'
        assert_equal('onetwo', name)
***************
*** 1305,1310 ****
--- 1358,1374 ----
  
    lines =<< trim END
        vim9script
+       var name = 25
+                 # comment
+ 
+                 # comment
+                       % 10
+       assert_equal(5, name)
+   END
+   CheckScriptSuccess(lines)
+ 
+   lines =<< trim END
+       vim9script
        var name = 11 *
                        22 /
                3
***************
*** 1618,1623 ****
--- 1682,1693 ----
        echo [1,
            2] [3,
                    4]
+ 
+       echo [1, # comment
+             # comment
+           2] [3,
+             # comment
+                   4]
    END
    CheckScriptSuccess(lines)
  
***************
*** 1832,1837 ****
--- 1902,1918 ----
                'two': 2,
                   }
        assert_equal({'one': 1, 'two': 2}, d)
+ 
+       d = {  # comment
+               'one':
+                 # comment
+ 
+                  1,
+                 # comment
+                 # comment
+               'two': 2,
+                  }
+       assert_equal({'one': 1, 'two': 2}, d)
    END
    CheckScriptSuccess(lines)
  
*** ../vim-8.2.1837/src/version.c       2020-10-11 20:44:10.873134571 +0200
--- src/version.c       2020-10-11 21:09:55.016497909 +0200
***************
*** 752,753 ****
--- 752,755 ----
  {   /* Add new patch number below this line */
+ /**/
+     1838,
  /**/

-- 
hundred-and-one symptoms of being an internet addict:
67. Your hard drive crashes. You haven't logged in for two hours.  You start
    to twitch. You pick up the phone and manually dial your ISP's access
    number. You try to hum to communicate with the modem.  You succeed.

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\\\  an exciting new programming language -- http://www.Zimbu.org        ///
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