Le Tan 010f4245f6 bugfix: clear image preview blocks having unmatched image path
The syntax highlighter could not recognize image links with spaces in
the URL. When clearing orphan image preview block, we need to clear
thoes blocks which having unmatched image path.

Fix issue: after inserting spaces in the URL of an image link, the
preview block still exists.

Signed-off-by: Le Tan <tamlokveer@gmail.com>
2017-01-22 19:40:43 +08:00
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