commit c9fe5ab3b093803b6e8d03358ba16aca6b6f0db1
author Bram Moolenaar <Bram@vim.org> Thu Jul 05 22:27:08 2018 +0200
committer Bram Moolenaar <Bram@vim.org> Thu Jul 05 22:27:08 2018 +0200
tree 7ae32535ac0e6f4c08d7e550a621c5656b5c8ce5
parent e85ce6ea2e09fe4d61c94e34e9e437c3c1f20b6e

patch 8.1.0154: crash with "set smarttab shiftwidth=0 softtabstop=-1"

Problem:    Crash with "set smarttab shiftwidth=0 softtabstop=-1".
Solution:   Fall back to using 'tabstop'. (closes #3155)

src/testdir/test_tab.vim

diff --git a/src/testdir/test_tab.vim b/src/testdir/test_tab.vim
index 3be3024..b8e8dfe 100644
--- a/src/testdir/test_tab.vim
+++ b/src/testdir/test_tab.vim
@@ -76,6 +76,15 @@
   exe "normal A\<BS>x\<Esc>"
   call assert_equal("x   x", getline(1))
 
-  set sts=0 sw=0 backspace&
+  call setline(1, 'x')
+  set sts=-1 sw=0 smarttab
+  exe "normal I\<Tab>\<Esc>"
+  call assert_equal("\tx", getline(1))
+
+  call setline(1, 'x')
+  exe "normal I\<Tab>\<BS>\<Esc>"
+  call assert_equal("x", getline(1))
+
+  set sts=0 sw=0 backspace& nosmarttab
   bwipe!
 endfunc