patch 8.2.2925: Vim9: line continuation comment uses legacy syntax
Problem: Vim9: line continuation comment uses legacy syntax.
Solution: Check for #\ instead of "\. (closes #8295)
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index cdda613..ee32495 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -3074,6 +3074,24 @@
'func Test() # comment',
'endfunc',
], 'E488:')
+
+ var lines =<< trim END
+ vim9script
+ syn region Text
+ \ start='foo'
+ #\ comment
+ \ end='bar'
+ END
+ CheckScriptSuccess(lines)
+
+ lines =<< trim END
+ vim9script
+ syn region Text
+ \ start='foo'
+ "\ comment
+ \ end='bar'
+ END
+ CheckScriptFailure(lines, 'E399:')
enddef
def Test_vim9_comment_gui()