Implement global exclude

pre_commit/clientlib.py

@@ -130,6 +130,7 @@ CONFIG_SCHEMA = schema.Map(
     'Config', None,
 
     schema.RequiredRecurse('repos', schema.Array(CONFIG_REPO_DICT)),
+    schema.Optional('exclude', schema.check_regex, '^$'),
     schema.Optional('fail_fast', schema.check_bool, False),
 )
 

pre_commit/commands/run.py

@@ -183,6 +183,7 @@ def _run_hooks(config, repo_hooks, args, environ):
     skips = _get_skips(environ)
     cols = _compute_cols([hook for _, hook in repo_hooks], args.verbose)
     filenames = _all_filenames(args)
+    filenames = _filter_by_include_exclude(filenames, '', config['exclude'])
     retval = 0
     for repo, hook in repo_hooks:
         retval |= _run_single_hook(filenames, hook, repo, args, skips, cols)