Clear error message on ycm_core ImportError

python/vimsupport.py

@@ -55,9 +55,8 @@ def NumLinesInBuffer( buffer ):
 
 
 def PostVimMessage( message ):
-  # TODO: escape the message string before formating it
   vim.command( 'echohl WarningMsg | echomsg "{0}" | echohl None'
-               .format( message ) )
+               .format( message.replace( '"', '\\"' ) ) )
 
 
 def EchoText( text ):

python/ycm.py

@@ -23,9 +23,19 @@ import vim
 import utils
 import os
 import sys
-import ycm_core
+
+try:
+  import ycm_core
+except ImportError, e:
+  vimsupport.PostVimMessage(
+    'Error importing ycm_core. Are you sure you have placed a version 3.2+ '
+    'libclang.[so|dll|dylib] in folder "{0}"? See the Installation Guide in '
+    'the docs. Full error: {1}'.format(
+      os.path.dirname( os.path.abspath( __file__ ) ), str( e ) ) )
+
 from completers.all.identifier_completer import IdentifierCompleter
 
+
 FILETYPE_SPECIFIC_COMPLETION_TO_DISABLE = vim.eval(
   'g:ycm_filetype_specific_completion_to_disable' )