commit 1817ccdb107ceeaf5c48fe193da5146682c15ca6
author zeertzjq <zeertzjq@outlook.com> Wed Apr 10 17:37:47 2024 +0200
committer Christian Brabandt <cb@256bit.org> Wed Apr 10 17:37:47 2024 +0200
tree 1b0fecad67841b8cd509468fad8ee6a3d0957fdb
parent aa8e22b035dd669cb47c9237f9c9a917ec6a0ec4

patch 9.1.0301: Vim9: heredoc start may be recognized in string

Problem:  Vim9: heredoc start may be recognized in string.
Solution: Don't skip to closing bracket for invalid list assignment.
          (zeertzjq)

closes: #14472

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test_vim9_assign.vim

diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 0d6d783..0beaa44 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -2029,6 +2029,20 @@
   END
   v9.CheckScriptSuccess(lines)
 
+  # heredoc start should not be recognized in string
+  lines =<< trim END
+      vim9script
+      def Func()
+        new
+        @" = 'bar'
+        ['foo', @"]->setline("]=<<"->count('='))
+        assert_equal(['foo', 'bar'], getline(1, '$'))
+        bwipe!
+      enddef
+      Func()
+  END
+  v9.CheckScriptSuccess(lines)
+
   v9.CheckDefFailure(['var lines =<< trim END X', 'END'], 'E488:')
   v9.CheckDefFailure(['var lines =<< trim END " comment', 'END'], 'E488:')