This is my previous blog-entry about vim's comment leaking.
It looks like, my instructions are not valid anymore. When I launch a fresh vim and do the initial check:
:set formatoptions
As expected, it returns:
formatoptions=crqol
However, doing my previously instructed:
:set formatoptions-=cro
Will not change the formatting. Darn! I don't know what changed, but apparently you cannot change multiple options at once. The new way of doing that is:
:set formatoptions-=c formatoptions-=r formatoptions-=o
After that, the current status check will return:
formatoptions=ql
Now, the comments do not leak anymore.