patch 8.2.2926: Vim9: no good error for using :legacy in a :def function
Problem: Vim9: no good error for using :legacy in a :def function.
Solution: Give an explicit error where :legacy is not working.
(closes #8309)
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 3626cca..9f0cd3f 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -2207,6 +2207,15 @@
CheckScriptSuccess(lines)
enddef
+def Test_legacy_errors()
+ for cmd in ['if', 'elseif', 'else', 'endif',
+ 'for', 'endfor', 'continue', 'break',
+ 'while', 'endwhile',
+ 'try', 'catch', 'finally', 'endtry']
+ CheckDefFailure(['legacy ' .. cmd .. ' expr'], 'E1189:')
+ endfor
+enddef
+
def DoFilterThis(a: string): list<string>
# closure nested inside another closure using argument
var Filter = (l) => filter(l, (_, v) => stridx(v, a) == 0)