Improve/fix indent with closing parenthesis (#129)

Fixes #126

indent/python.vim

@@ -222,7 +222,12 @@ function! s:indent_like_opening_paren(lnum)
         if starts_with_closing_paren && !hang_closing
             let res = base
         else
-            return base + s:sw()
+            let res = base + s:sw()
+
+            " Special case for parenthesis.
+            if text[paren_col-1] ==# '(' && getline(a:lnum) !~# '\v\)\s*:?\s*$'
+                return res
+            endif
         endif
     else
         " Indent to match position of opening paren.

spec/indent/indent_spec.rb

@@ -203,9 +203,24 @@
   end
 
   describe "when using a function definition" do
-      it "indents shiftwidth spaces" do
+      it "handles indent with closing parenthesis on same line" do
           vim.feedkeys 'idef long_function_name(\<CR>arg'
           indent.should == shiftwidth
+          vim.feedkeys '):'
+          indent.should == shiftwidth * 2
+      end
+
+      it "handles indent with closing parenthesis on new line" do
+          vim.feedkeys 'idef long_function_name(\<CR>arg'
+          indent.should == shiftwidth
+          vim.feedkeys '\<CR>'
+          indent.should == shiftwidth
+          vim.feedkeys ')'
+          indent.should == (hang_closing ? shiftwidth * 2 : 0)
+          vim.feedkeys ':'
+          indent.should == (hang_closing ? shiftwidth * 2 : 0)
+          vim.feedkeys '\<Esc>k'
+          indent.should == shiftwidth
       end
   end