patch 9.0.0370: cleaning up afterwards can make a function messy
Problem: Cleaning up afterwards can make a function messy.
Solution: Add the :defer command.
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 0fa74df..c616e18 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -4272,6 +4272,36 @@
v9.CheckScriptFailure(lines, 'E777', 2)
enddef
+def AddDefer(s: string)
+ g:deferred->extend([s])
+enddef
+
+def DeferTwo()
+ g:deferred->extend(['in Two'])
+ for n in range(3)
+ defer g:AddDefer('two' .. n)
+ endfor
+ g:deferred->extend(['end Two'])
+enddef
+
+def DeferOne()
+ g:deferred->extend(['in One'])
+ defer g:AddDefer('one')
+ g:DeferTwo()
+ g:deferred->extend(['end One'])
+
+ writefile(['text'], 'XdeferFile')
+ defer delete('XdeferFile')
+enddef
+
+def Test_defer()
+ g:deferred = []
+ g:DeferOne()
+ assert_equal(['in One', 'in Two', 'end Two', 'two2', 'two1', 'two0', 'end One', 'one'], g:deferred)
+ unlet g:deferred
+ assert_equal('', glob('XdeferFile'))
+enddef
+
" The following messes up syntax highlight, keep near the end.
if has('python3')
def Test_python3_command()