commit 531be47ac5522807b265c6287021a01c9b895ac9
author Bram Moolenaar <Bram@vim.org> Wed Sep 23 22:38:05 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Wed Sep 23 22:38:05 2020 +0200
tree 6ff8a223defdf477cdd5243fc2eee4f53ae71292
parent 851d108313317a062371a6750e6c6bf370a9bafa

patch 8.2.1736: failure to compile a pattern not tested much

Problem:    Failure to compile a pattern not tested much.
Solution:   Add tests where a pattern fails to compile. (Yegappan Lakshmanan,
            closes #7004)

src/testdir/test_substitute.vim

diff --git a/src/testdir/test_substitute.vim b/src/testdir/test_substitute.vim
index a137aa5..f38eb55 100644
--- a/src/testdir/test_substitute.vim
+++ b/src/testdir/test_substitute.vim
@@ -246,6 +246,7 @@
   call assert_fails("let s=substitute('abcda', [], 'A', 'g')", 'E730:')
   call assert_fails("let s=substitute('abcda', 'a', [], 'g')", 'E730:')
   call assert_fails("let s=substitute('abcda', 'a', 'A', [])", 'E730:')
+  call assert_fails("let s=substitute('abc', '\\%(', 'A', 'g')", 'E53:')
 
   bwipe!
 endfunc