adding support for splitright and splitbelow

lib/ex-mode.coffee

@@ -35,3 +35,15 @@ module.exports = ExMode =
   consumeVim: (vim) ->
     @vim = vim
     @globalExState.setVim(vim)
+
+  config:
+    splitbelow:
+      title: 'Split below'
+      description: 'when splitting, split from below'
+      type: 'boolean'
+      default: 'false'
+    splitright:
+      title: 'Split right'
+      description: 'when splitting, split from right'
+      type: 'boolean'
+      default: 'false'

lib/ex.coffee

@@ -258,6 +258,15 @@ class Ex
     filePaths = args.split(' ')
     filePaths = undefined if filePaths.length is 1 and filePaths[0] is ''
     pane = atom.workspace.getActivePane()
+    if atom.config.get('ex-mode.splitbelow')
+      if filePaths? and filePaths.length > 0
+        newPane = pane.splitDown()
+        for file in filePaths
+          do ->
+            atom.workspace.openURIInPane file, newPane
+      else
+        pane.splitDown(copyActiveItem: true)
+    else
       if filePaths? and filePaths.length > 0
         newPane = pane.splitUp()
         for file in filePaths
@@ -266,6 +275,7 @@ class Ex
       else
         pane.splitUp(copyActiveItem: true)
 
+
   sp: (args) => @split(args)
 
   substitute: ({ range, args, editor, vimState }) ->
@@ -335,6 +345,15 @@ class Ex
     filePaths = args.split(' ')
     filePaths = undefined if filePaths.length is 1 and filePaths[0] is ''
     pane = atom.workspace.getActivePane()
+    if atom.config.get('ex-mode.splitright')
+      if filePaths? and filePaths.length > 0
+        newPane = pane.splitRight()
+        for file in filePaths
+          do ->
+            atom.workspace.openURIInPane file, newPane
+      else
+        pane.splitRight(copyActiveItem: true)
+    else
       if filePaths? and filePaths.length > 0
         newPane = pane.splitLeft()
         for file in filePaths