I broke up with neovim....vim is my best friend now

dot_vim/plugged/vimtex/rplugin/python3/denite/source/vimtex.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+
+from .base import Base
+
+
+class Source(Base):
+
+    def __init__(self, vim):
+        super().__init__(vim)
+
+        self.name = 'vimtex'
+        self.kind = 'file'
+
+    @staticmethod
+    def format_number(n):
+        if not n or not type(n) is dict or n['frontmatter'] or n['backmatter']:
+            return ''
+
+        num = [str(n[k]) for k in [
+               'part',
+               'chapter',
+               'section',
+               'subsection',
+               'subsubsection',
+               'subsubsubsection'] if n[k] != 0]
+
+        if n['appendix']:
+            num[0] = chr(int(num[0]) + 64)
+
+        fnum = '.'.join(num)
+        return fnum
+
+    @staticmethod
+    def create_candidate(e, depth):
+        indent = (' ' * 2*(int(depth) - int(e['level'])) + e['title'])[:60]
+        number = Source.format_number(e['number'])
+        abbr = '{:65}{:10}'.format(indent, number)
+        return {'word': e['title'],
+                'abbr': abbr,
+                'action__path': e['file'],
+                'action__line': e.get('line', 0)}
+
+    def gather_candidates(self, context):
+        entries = self.vim.eval('vimtex#parser#toc()')
+        depth = max([int(e['level']) for e in entries])
+        return [Source.create_candidate(e, depth) for e in entries]