[O] "org-sort" doesn't work properly on active region

[York Zhao]

Hi,

When using "org-sort" on a selected region, it doesn't work properly, I expected
it to sort all the headlines in the region, however, not only does the region
get sorted but also, the headlines get sorted are being combinded into one line
which I don't think is correct. Hopefully somebody will take a look on
this issue.


Thanks