Strip STATIC_URL from start of path to avoid SuspiciousFileOperation during embed

[rantecki]

With embed enabled, I was running into SuspicousFileOperation exceptions seemingly due to the /static/ at the start of the asset path.

    content = compress(paths, **kwargs)
  File "/home/richard/work/DE/heartbeat/env/src/django-pipeline/pipeline/compressors/__init__.py", line 73, in compress_css
    css = self.concatenate_and_rewrite(paths, output_filename, variant)
  File "/home/richard/work/DE/heartbeat/env/src/django-pipeline/pipeline/compressors/__init__.py", line 139, in concatenate_and_rewrite
    content = re.sub(URL_DETECTOR, reconstruct, content)
  File "/home/richard/work/DE/heartbeat/env/lib/python2.7/re.py", line 151, in sub
    return _compile(pattern, flags).sub(repl, string, count)
  File "/home/richard/work/DE/heartbeat/env/src/django-pipeline/pipeline/compressors/__init__.py", line 135, in reconstruct
    output_filename, variant)
  File "/home/richard/work/DE/heartbeat/env/src/django-pipeline/pipeline/compressors/__init__.py", line 150, in construct_asset_path
    if self.embeddable(public_path, variant):
  File "/home/richard/work/DE/heartbeat/env/src/django-pipeline/pipeline/compressors/__init__.py", line 162, in embeddable
    if not (re.search(settings.PIPELINE_EMBED_PATH, path.replace('\\', '/')) and self.storage.exists(path)):
  File "/home/richard/work/DE/heartbeat/env/local/lib/python2.7/site-packages/django/core/files/storage.py", line 265, in exists
    return os.path.exists(self.path(name))
  File "/home/richard/work/DE/heartbeat/env/local/lib/python2.7/site-packages/django/contrib/staticfiles/storage.py", line 48, in path
    return super(StaticFilesStorage, self).path(name)
  File "/home/richard/work/DE/heartbeat/env/local/lib/python2.7/site-packages/django/core/files/storage.py", line 281, in path
    raise SuspiciousFileOperation("Attempted access to '%s' denied." % name)
django.core.exceptions.SuspiciousFileOperation: Attempted access to '/static/img/logo.png' denied.

This occurs regardless of whether I reference the asset using a relative url i.e. img/logo.png or an absolute url /static/img/logo.png in my LESS file.

I'm not sure if I'm doing something wrong, but stripping the STATIC_URL from paths prior to storage.exists() lookups appears to resolve it.

[ekohl]

Does 930b12c solve this?