Vertical line separating the fringe and the buffer

[user3341592]

Hello List,

Is there a way to get a 1-px vertical line *between* the 8-px fringe and
the buffer itself, such as in many other editors?  In particular, see
http://manual.macromates.com/en/navigation_overview#collapsing_text_blocks_foldings.

Best regards,

PS- This has first been posted onto StackOverflow [1], but did not get
    answer.

[1] 
http://stackoverflow.com/questions/25760235/vertical-line-separating-the-fringe-and-the-buffer