Indent empty lines inside blocks (#81)

Author: aldanor

indent/python.vim

@@ -303,17 +303,19 @@ function! s:indent_like_previous_line(lnum)
         return base + s:sw()
     endif
 
+    let empty = getline(a:lnum) =~# '^\s*$'
+
     " If the previous statement was a stop-execution statement or a pass
     if getline(start) =~# s:stop_statement
         " Remove one level of indentation if the user hasn't already dedented
-        if indent(a:lnum) > base - s:sw()
+        if empty || current > base - s:sw()
             return base - s:sw()
         endif
         " Otherwise, trust the user
         return -1
     endif
 
-    if s:is_dedented_already(current, base)
+    if !empty && s:is_dedented_already(current, base)
         return -1
     endif
 

spec/indent/indent_spec.rb

@@ -161,6 +161,27 @@
     end
   end
 
+  describe "when line is empty inside a block" do
+    it "is indented like the previous line" do
+      vim.feedkeys 'idef a():\<CR>1\<CR>\<CR>2\<ESC>kcc'
+      indent.should == shiftwidth
+    end
+  end
+
+  describe "when line is empty inside a block following multi-line statement" do
+    it "is indented like the previous line" do
+      vim.feedkeys 'idef a():\<CR>x = (1 +\<CR>2)\<CR>\<CR>y\<ESC>kcc'
+      indent.should == shiftwidth
+    end
+  end
+
+  describe "when line is empty inside a block following stop statement" do
+    it "is indented like the previous line minus shiftwidth" do
+      vim.feedkeys 'iif x:\<CR>if y:\<CR>pass\<CR>\<CR>z\<ESC>kcc'
+      indent.should == shiftwidth
+    end
+  end
+
   describe "when using simple control structures" do
       it "indents shiftwidth spaces" do
           vim.feedkeys 'iwhile True:\<CR>pass'