[vimrc] Fix YouCompleteMe, once again

vim/ycm_global_conf.py

@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+
+import os
+import subprocess
+import re
+
+
+def LoadSystemIncludes( filetype ):
+    regex = re.compile(r'(?:\#include \<...\> search starts here\:)(?P<list>.*?)(?:End of search list)', re.DOTALL)
+    process = subprocess.Popen(['clang', '-v', '-E', '-x', filetype, '-'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    process_out, process_err = process.communicate('')
+    output = process_out + process_err
+    includes = []
+    for p in re.search(regex, output.decode('utf-8')).group('list').split('\n'):
+        p = p.strip()
+        if len(p) > 0 and p.find('(framework directory)') < 0:
+            includes.append('-isystem')
+            includes.append(p)
+    return includes
+
+
+def DirectoryOfThisScript():
+  return os.path.dirname( os.path.abspath( __file__ ) )
+
+
+def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
+  if not working_directory:
+    return list( flags )
+  new_flags = []
+  make_next_absolute = False
+  path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
+  for flag in flags:
+    new_flag = flag
+
+    if make_next_absolute:
+      make_next_absolute = False
+      if not flag.startswith( '/' ):
+        new_flag = os.path.join( working_directory, flag )
+
+    for path_flag in path_flags:
+      if flag == path_flag:
+        make_next_absolute = True
+        break
+
+      if flag.startswith( path_flag ):
+        path = flag[ len( path_flag ): ]
+        new_flag = path_flag + os.path.join( working_directory, path )
+        break
+
+    if new_flag:
+      new_flags.append( new_flag )
+  return new_flags
+
+
+def FlagsForFile(filename, **kwargs):
+  base_flags = [
+    '-Wall',
+    '-Wextra',
+    '-Werror'
+    '-pedantic',
+    '-I',
+    '.'
+  ]
+  extra_flags = []
+
+  data = kwargs['client_data']
+  filetype = data['&filetype']
+
+  if filetype == 'c':
+    language = 'c'
+  elif filetype == 'cpp':
+    language = 'c++'
+    extra_flags += ['-std=c++11']
+  elif filetype == 'objc':
+    language = 'objective-c'
+
+  flags = base_flags + extra_flags + ['-x', language] + LoadSystemIncludes(language)
+
+  relative_to = DirectoryOfThisScript()
+  final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
+
+  return {
+    'flags': final_flags
+}

vimrc

@@ -61,9 +61,9 @@ if has("unix") || has("mac")
         map <LocalLeader>ll :Latexmk<CR>
         if isdirectory(expand("$HOME/.vim/bundle/YouCompleteMe"))
             "[Workaround for YCM non-portability]"
-            "No need for Plugin 'Valloric/YouCompleteMe', it's installed system-wide
-            let g:ycm_global_ycm_extra_conf = '$HOME/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp/ycm/.ycm_extra_conf.py'
-            let g:ycm_server_python_interpreter = '/usr/bin/python2'
+            Plugin 'Valloric/YouCompleteMe'
+            let g:ycm_global_ycm_extra_conf = expand("$HOME/.vim/ycm_global_conf.py")
+            let g:ycm_extra_conf_vim_data =[ "&filetype" ]
             "[We're using ale for linting]"
             let g:ycm_show_diagnostics_ui = 0
             let g:ycm_collect_identifiers_from_tags_files=1