patch 8.1.2341: not so easy to interrupt a script programatically
Problem: Not so easy to interrupt a script programatically.
Solution: Add the interrupt() function. (Yasuhiro Matsumoto, closes #2834)
diff --git a/src/testdir/test_interrupt.vim b/src/testdir/test_interrupt.vim
new file mode 100644
index 0000000..111752d
--- /dev/null
+++ b/src/testdir/test_interrupt.vim
@@ -0,0 +1,27 @@
+" Test behavior of interrupt()
+
+let s:bufwritepre_called = 0
+let s:bufwritepost_called = 0
+
+func s:bufwritepre()
+ let s:bufwritepre_called = 1
+ call interrupt()
+endfunction
+
+func s:bufwritepost()
+ let s:bufwritepost_called = 1
+endfunction
+
+func Test_interrupt()
+ new Xfile
+ let n = 0
+ try
+ au BufWritePre Xfile call s:bufwritepre()
+ au BufWritePost Xfile call s:bufwritepost()
+ w!
+ catch /^Vim:Interrupt$/
+ endtry
+ call assert_equal(1, s:bufwritepre_called)
+ call assert_equal(0, s:bufwritepost_called)
+ call assert_equal(0, filereadable('Xfile'))
+endfunc