Simplify CR expansion mapping. Add Test for it.

autoload/delimitMate.vim

@@ -406,9 +406,9 @@ function! delimitMate#ExpandReturn() "{{{
 		" Expand:
 		call delimitMate#FlushBuffer()
 
-		let b:delimitMate_lineSuffix = getline('.')[col('.')-1:]
+		" Not sure why I used the previous combos, but I'm sure somebody will tell
-		call feedkeys("\<Esc>l\"_Do \<CR>\<C-R>\<C-R>=b:delimitMate_lineSuffix\<CR>\<Esc>k$i\<Del>", 't')
+		" me about it.
-		return ''
+		return "\<Esc>a\<CR>\<Esc>O"
 	else
 		return "\<CR>"
 	endif

test/expand_cr.txt

@@ -0,0 +1,12 @@
+# 
+%d
+filetype indent on
+set bs=2 et sts=4 sw=4 ft=javascript
+call setline(1, '$(document).ready(function() {})')
+DelimitMateReload
+exec "normal 31|i\<CR>x\<Esc>"
+================================================================================
+$(document).ready(function() {
+    x
+})
+--------------------------------------------------------------------------------

test/expand_cr.vim

@@ -0,0 +1,42 @@
+let g:delimitMate_expand_cr = 1
+"DelimitMateReload
+let lines = readfile(expand('<sfile>:t:r').'.txt')
+call vimtest#StartTap()
+let testsnumber = len(filter(copy(lines), 'v:val =~ ''^=\{80}$'''))
+call vimtap#Plan(testsnumber)
+let tcount = 1
+let expect = 0
+let evaluate = 0
+for item in lines
+  if item =~ '^=\{80}$'
+    let expect = 1
+    let expected = []
+    continue
+  endif
+
+  if item =~ '^#\|^\s*$' && expect == 0
+    " A comment or empty line.
+    continue
+  endif
+  if ! expect
+    " A command.
+    exec item
+    call vimtap#Diag(item)
+    continue
+  endif
+  if item =~ '^-\{80}$'
+    let expect = 0
+  endif
+  if expect
+    call add(expected, item)
+    continue
+  endif
+  let lines = getline(1, line('$'))
+  let passed = lines == expected
+  echom string(lines)
+  echom string(expected)
+  call vimtap#Ok(passed, string(expected) .
+        \ (passed ? ' =' : ' !') . '= ' . string(lines))
+  let tcount += 1
+endfor
+call vimtest#Quit()