vim-patch:7.4.490

Problem:    Cannot specify the buffer to use for "do" and "dp", making them
	    useless for three-way diff.
Solution:   Use the count as the buffer number. (James McCoy)

https://code.google.com/p/vim/source/detail?r=v7-4-490

src/nvim/diff.c

@@ -2017,17 +2017,24 @@ int diff_infold(win_T *wp, linenr_T lnum)
 }
 
 /// "dp" and "do" commands.
-///
-/// @param put
-void nv_diffgetput(int put)
+void nv_diffgetput(bool put, size_t count)
 {
   exarg_T ea;
-  ea.arg = (char_u *)"";
+  char buf[30];
+
+  if (count == 0) {
+    ea.arg = (char_u *)"";
+  } else {
+    vim_snprintf(buf, 30, "%zu", count);
+    ea.arg = (char_u *)buf;
+  }
+
   if (put) {
     ea.cmdidx = CMD_diffput;
   } else {
     ea.cmdidx = CMD_diffget;
   }
+
   ea.addr_count = 0;
   ea.line1 = curwin->w_cursor.lnum;
   ea.line2 = curwin->w_cursor.lnum;

src/nvim/normal.c

@@ -11,6 +11,7 @@
  *		the operators.
  */
 
+#include <assert.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <string.h>
@@ -7246,7 +7247,8 @@ static void nv_put(cmdarg_T *cap)
     /* "dp" is ":diffput" */
     if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'p') {
       clearop(cap->oap);
-      nv_diffgetput(true);
+      assert(cap->opcount >= 0);
+      nv_diffgetput(true, (size_t)cap->opcount);
     } else
       clearopbeep(cap->oap);
   } else {
@@ -7348,7 +7350,8 @@ static void nv_open(cmdarg_T *cap)
   /* "do" is ":diffget" */
   if (cap->oap->op_type == OP_DELETE && cap->cmdchar == 'o') {
     clearop(cap->oap);
-    nv_diffgetput(false);
+    assert(cap->opcount >= 0);
+    nv_diffgetput(false, (size_t)cap->opcount);
   } else if (VIsual_active) /* switch start and end of visual */
     v_swap_corners(cap->cmdchar);
   else

src/nvim/version.c

@@ -248,7 +248,7 @@ static int included_patches[] = {
   493,
   //492,
   491,
-  //490,
+  490,
   489,
   488,
   487,