vim-patch:7.4.1513

Problem:    "J" fails if there are not enough lines. (Christian Neukirchen)
Solution:   Reduce the count, only fail on the last line.

41e0f2f48f

test/functional/legacy/join_spec.lua

@@ -0,0 +1,20 @@
+-- Test for joining lines
+
+local helpers = require('test.functional.helpers')
+local clear, eq = helpers.clear, helpers.eq
+local eval, execute = helpers.eval, helpers.execute
+
+describe('joining lines', function()
+  before_each(clear)
+
+  it('is working', function()
+    execute('new')
+    execute([[call setline(1, ['one', 'two', 'three', 'four'])]])
+    execute('normal J')
+    eq('one two', eval('getline(1)'))
+    execute('%del')
+    execute([[call setline(1, ['one', 'two', 'three', 'four'])]])
+    execute('normal 10J')
+    eq('one two three four', eval('getline(1)'))
+  end)
+end)