What steps will reproduce the problem?
Highlight the following source with vim's own highlighter:
syn keyword foo bar print
syn keyword foo
\ bar print
What is the expected output? What do you see instead?
Neither "print" should highlighted as they are in a keyword list for syn
keyword.
The second "print" gets highlighted, I guess because vim.vim doesn't handle the
line continuation properly.
What version of the product are you using? On what operating system?
vim 7.4.738 on Arch Linux.