Eat FutureWarning and DeprecationWarning on stderr

Author: kaste

linter.py

@@ -1,7 +1,11 @@
+import logging
 from SublimeLinter.lint import PythonLinter
 import re
 
 
+logger = logging.getLogger('SublimeLinter.plugins.flake8')
+
+
 CAPTURE_WS = re.compile(r'(\s+)')
 CAPTURE_IMPORT_ID = re.compile(r'^\'(?:.*\.)?(.+)\'')
 
@@ -43,6 +47,15 @@ class Flake8(PythonLinter):
     )
     multiline = True
 
+    def on_stderr(self, stderr):
+        stderr = re.sub(r'^.+FutureWarning.+\n', '', stderr, re.M)
+        stderr = re.sub(r'^.+DeprecationWarning.+\n', '', stderr, re.M)
+        stderr = re.sub(r'^.+EXTRANEOUS_WHITESPACE_REGEX = re.compile.+\n', '', stderr, re.M)
+
+        if stderr:
+            self.notify_failure()
+            logger.error(stderr)
+
     def parse_output(self, proc, virtual_view):
         settings = self.get_view_settings()
         errors = super().parse_output(proc, virtual_view)