vim: fix printing of error messages
vim: fix printing of error messages

chambart/merlin,haselwarter/merlin,ocaml/merlin,rgrinberg/merlin,rgrinberg/merlin,neojski/merlin,dra27/merlin,fxfactorial/merlin,dra27/merlin,chambart/merlin,neojski/merlin,rgrinberg/merlin,chriskonstad/merlin,dra27/merlin,haselwarter/merlin,haselwarter/merlin,chriskonstad/merlin,chambart/merlin,the-lambda-church/merlin,rgrinberg/merlin,chambart/merlin,ocaml/merlin,fxfactorial/merlin,the-lambda-church/merlin,ocaml/merlin,the-lambda-church/merlin,fxfactorial/merlin,neojski/merlin,dra27/merlin,neojski/merlin,fxfactorial/merlin,ocaml/merlin,haselwarter/merlin