vim-patch:7.4.186

Problem:    Insert in Visual mode sometimes gives incorrect results.
            (Dominique Pelle)
Solution:   Remember the original insert start position. (Christian Brabandt,
            Dominique Pelle)

https://code.google.com/p/vim/source/detail?r=4d12112c5efae071aecbeed1a7196f18950457b3

src/buffer_defs.h

@@ -492,6 +492,7 @@ struct file_buffer {
    * start and end of an operator, also used for '[ and ']
    */
   pos_T b_op_start;
+  pos_T b_op_start_orig;  // used for Insstart_orig
   pos_T b_op_end;
 
   int b_marks_read;             /* Have we read viminfo marks yet? */