Refactor the Shift-D keymapping for vim

Before, Shift-D would delete the entire line with the vim keymapping
set. Vim's binding for this deletes from the cursor up til the end of
the line, so that's been fixed. Also, allow for count iterations on
Shift-D.

Author: mattsacks

keymap/vim.js

@@ -324,16 +324,26 @@
     },
     "G": function(cm) { cm.setOption("keyMap", "vim-prefix-g");},
     "Shift-D": function(cm) {
-      // commented out verions works, but I left original, cause maybe
-      // I don't know vim enouth to see what it does
-      /* var cur = cm.getCursor();
-      var f = {line: cur.line, ch: cur.ch}, t = {line: cur.line};
-      pushInBuffer(cm.getRange(f, t));
-      */
+      var cursor = cm.getCursor();
+      var lineN = cursor.line;
+      var line = cm.getLine(lineN);
+      cm.setLine(lineN, line.slice(0, cursor.ch));
+
       emptyBuffer();
-      mark["Shift-D"] = cm.getCursor(false).line;
-      cm.setCursor(cm.getCursor(true).line);
-      delTillMark(cm,"Shift-D"); mark = [];
+      pushInBuffer(line.slice(cursor.ch));
+
+      if (repeatCount > 1) {
+        // we've already done it once
+        --repeatCount;
+        // the lines dissapear (ie, cursor stays on the same lineN),
+        // so only incremenet once
+        ++lineN;
+
+        iterTimes(function(i) {
+          pushInBuffer(cm.getLine(lineN));
+          cm.removeLine(lineN);
+        });
+      }
     },
 
     "S": function (cm) {