bug#27187: wrong cursor postion after sort in dired

[Eli Zaretskii]

> From: Shuguang Sun <shuguang@gmail.com>
> Date: Thu, 1 Jun 2017 23:07:37 +0800
> 
> The cursor will keep the postion in the screening, and can't move the correct 
> postion after sort in dired when
> blink-cursor-mode is disabled. If blink-cursor-mode is enabled, the cursor 
> can jump to the correct postion
> when the cursor blinks.
> 
> How to reproduce it:
> 1. runemacs.exe -Q
> 2. eval (blink-cursor-mode 0) to disable blink-cursor-mode
> 3. dired a directory
> 4. press "s" to sort the directory, and the cursor will keep the postion in 
> the buffer and not move with the file.

Thanks, I think I fixed this.

I'm marking the bug done; feel free to reopen if some problems remain.