patch 8.1.0504: when CTRL-C is mapped it triggers InsertLeave
Problem: When CTRL-C is mapped it triggers InsertLeave.
Solution: Make CTRL-C behave the same way when typed or used in a mapping.
diff --git a/src/testdir/test_edit.vim b/src/testdir/test_edit.vim
index 651f1f8..63f58ae 100644
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -1409,3 +1409,33 @@
bwipe XAltFile
call delete('XAltFile')
endfunc
+
+func Test_leave_insert_autocmd()
+ new
+ au InsertLeave * let g:did_au = 1
+ let g:did_au = 0
+ call feedkeys("afoo\<Esc>", 'tx')
+ call assert_equal(1, g:did_au)
+ call assert_equal('foo', getline(1))
+
+ let g:did_au = 0
+ call feedkeys("Sbar\<C-C>", 'tx')
+ call assert_equal(0, g:did_au)
+ call assert_equal('bar', getline(1))
+
+ inoremap x xx<Esc>
+ let g:did_au = 0
+ call feedkeys("Saax", 'tx')
+ call assert_equal(1, g:did_au)
+ call assert_equal('aaxx', getline(1))
+
+ inoremap x xx<C-C>
+ let g:did_au = 0
+ call feedkeys("Sbbx", 'tx')
+ call assert_equal(0, g:did_au)
+ call assert_equal('bbxx', getline(1))
+
+ bwipe!
+ au! InsertLeave
+ iunmap x
+endfunc