docs: def v1_tag_suggest(request, tags, prefix, parent=''):
      '''Provide fast suggestions for tag components.
  
      This yields suggestions for *components* of a tag and a given
      prefix. For example, given the tags ``foo/bar/baz`` and
      ``fob/bob``, here are some example completions (ordering may be
      different):
  
      .. code-block:: text
  
          /dossier/v1/tags/suggest/prefix/f => ['foo', 'fob']
          /dossier/v1/tags/suggest/prefix/foo => ['foo']
          /dossier/v1/tags/suggest/prefix/b/parent/foo => ['bar']
          /dossier/v1/tags/suggest/prefix/b/parent/fob => ['bob']
          /dossier/v1/tags/suggest/prefix/b/parent/foo/bar => ['baz']
  
      N.B. Each of the lists above are wrapped in the following
      JSON envelope for the response:
  
      .. code-block:: text
  
          {'suggestions': ['foo', 'fob']}
  
      An optional query parameter, ``limit``, may be passed to control
      the number of suggestions returned.
      '''
      prefix = prefix.decode('utf-8').strip()
      parent = parent.decode('utf-8').strip()
      limit = min(10000, int(request.params.get('limit', 100)))
      return {'suggestions': tags.suggest(parent, prefix, limit=limit)}