vim-patch:7.4.743

Problem:    "p" in Visual mode causes an unexpected line split.
Solution:   Advance the cursor first. (Yukihiro Nakadaira)

c004bc2726

src/nvim/ops.c

@@ -2664,17 +2664,27 @@ void do_put(int regname, yankreg_T *reg, int dir, long count, int flags)
 
   if (y_type == MLINE) {
     if (flags & PUT_LINE_SPLIT) {
-      /* "p" or "P" in Visual mode: split the lines to put the text in
-       * between. */
-      if (u_save_cursor() == FAIL)
+      // "p" or "P" in Visual mode: split the lines to put the text in
+      // between.
+      if (u_save_cursor() == FAIL) {
         goto end;
-      ptr = vim_strsave(get_cursor_pos_ptr());
-      ml_append(curwin->w_cursor.lnum, ptr, (colnr_T)0, FALSE);
+      }
+      char_u *p = get_cursor_pos_ptr();
+      if (dir == FORWARD && *p != NUL) {
+        mb_ptr_adv(p);
+      }
+      ptr = vim_strsave(p);
+      ml_append(curwin->w_cursor.lnum, ptr, (colnr_T)0, false);
       xfree(ptr);
 
-      ptr = vim_strnsave(get_cursor_line_ptr(), curwin->w_cursor.col);
-      ml_replace(curwin->w_cursor.lnum, ptr, FALSE);
-      ++nr_lines;
+      oldp = get_cursor_line_ptr();
+      p = oldp + curwin->w_cursor.col;
+      if (dir == FORWARD && *p != NUL) {
+        mb_ptr_adv(p);
+      }
+      ptr = vim_strnsave(oldp, p - oldp);
+      ml_replace(curwin->w_cursor.lnum, ptr, false);
+      nr_lines++;
       dir = FORWARD;
     }
     if (flags & PUT_LINE_FORWARD) {

src/nvim/version.c

@@ -545,7 +545,7 @@ static int included_patches[] = {
   746,
   745,
   // 744 NA
-  // 743,
+  743,
   742,
   741,
   740,

test/functional/legacy/094_visual_mode_operators_spec.lua

@@ -31,6 +31,13 @@ local function put_abc()
     $put ='c']])
 end
 
+local function put_aaabbbccc()
+  source([[
+    $put ='aaa'
+    $put ='bbb'
+    $put ='ccc']])
+end
+
 local function define_select_mode_maps()
   source([[
     snoremap <lt>End> <End>
@@ -307,4 +314,61 @@ describe('Visual mode and operator', function()
         a]])
     end)
   end)
+
+  describe('v_p:', function()
+    it('replace last character with line register at middle line', function()
+      put_aaabbbccc()
+      execute('-2yank')
+      feed('k$vp')
+
+      expect([[
+        
+        aaa
+        bb
+        aaa
+        
+        ccc]])
+    end)
+
+    it('replace last character with line register at middle line selecting newline', function()
+      put_aaabbbccc()
+      execute('-2yank')
+      feed('k$v$p')
+
+      expect([[
+        
+        aaa
+        bb
+        aaa
+        ccc]])
+    end)
+
+    it('replace last character with line register at last line', function()
+      put_aaabbbccc()
+      execute('-2yank')
+      feed('$vp')
+
+      expect([[
+        
+        aaa
+        bbb
+        cc
+        aaa
+        ]])
+    end)
+
+    it('replace last character with line register at last line selecting newline', function()
+      put_aaabbbccc()
+      execute('-2yank')
+      feed('$v$p')
+
+      expect([[
+        
+        aaa
+        bbb
+        cc
+        aaa
+        ]])
+    end)
+  end)
 end)