From a3134bc4809dff52cc9a635103a48b48d7c2d148 Mon Sep 17 00:00:00 2001
From: "Justin M. Keyes" <justinkz@gmail.com>
Date: Sun, 22 Oct 2017 13:51:50 +0200
Subject: test: tabstop=<big-number> #2838

---
 test/functional/options/tabstop_spec.lua | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 test/functional/options/tabstop_spec.lua

(limited to 'test')

diff --git a/test/functional/options/tabstop_spec.lua b/test/functional/options/tabstop_spec.lua
new file mode 100644
index 0000000000..dc3ba38438
--- /dev/null
+++ b/test/functional/options/tabstop_spec.lua
@@ -0,0 +1,23 @@
+local helpers = require('test.functional.helpers')(after_each)
+
+local clear = helpers.clear
+local feed = helpers.feed
+local eq = helpers.eq
+local eval = helpers.eval
+
+describe("'tabstop' option", function()
+  before_each(function()
+    clear()
+  end)
+
+  -- NOTE: Setting 'tabstop' to a big number reproduces crash #2838.
+  -- Disallowing big 'tabstop' would not fix #2838, only hide it.
+  it("tabstop=<big-number> does not crash #2838", function()
+    -- Insert a <Tab> character for 'tabstop' to work with.
+    feed('i<Tab><Esc>')
+    -- Set 'tabstop' to a very high value.
+    -- Use feed(), not command(), to provoke crash.
+    feed(':set tabstop=3000000000<CR>')
+    eq(2, eval("1+1"))  -- Still alive?
+  end)
+end)
-- 
cgit