Problem: Appending a block in the middle of a tab does not work correctly
when virtualedit is set.
Solution: Decrement spaces and count, don't reset them. (James McCoy)
Problem: Inserting text for Visual block mode, with cursor movement,
repeats the wrong text. (Aleksandar Ivanov)
Solution: Reset the update_Insstart_orig flag. (Christian Brabandt)
Problem: Cursor moves to wrong position when using "gj" after "$" and
virtual editing is active.
Solution: Make "gj" behave differently when virtual editing is active.
(Hirohito Higashi)
Problem: Append in blockwise Visual mode with "$" is wrong.
Solution: After "$" don't use the code that checks if the cursor was moved.
(Hirohito Higashi, Ken Takata)
Problem: When inserting text in Visual block mode and moving the cursor the
wrong text gets repeated in other lines.
Solution: Use the '[ mark to find the start of the actually inserted text.
(Christian Brabandt)
Problem: When replacing a character in Visual block mode, entering a CR
does not cause a repeated line break.
Solution: Recognize the situation and repeat the line break. (Christian
Brabandt)
