euscan/handlers: rework handlers, better remote-id + watch support

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>

bin/euscan

@@ -298,11 +298,16 @@ def main():
             exit_helper(1)
 
         except Exception as err:
+            import traceback
+            print ('-'*60)
+            traceback.print_exc(file=sys.stderr)
+            print ('-'*60)
+
             output.eerror('%s: %s' % (query, str(err)))
             exit_helper(1)
 
         if not ret and not CONFIG['quiet']:
-            output.ewarn(
+            output.einfo(
                 "Didn't find any new version, check package's homepage " +
                 "for more informations"
             )

bin/euscan_patch_metadata

@@ -176,8 +176,9 @@ def patch_metadata(package, watch_data, diff=False):
             valid = ("uversionmangle", "versionmangle", "downloadurlmangle")
             cleaned_opts = []
             for opt in opts.split(","):
-                opt_name, opt_value = opt.split("=")
+                opt_name, opt_value = opt.split("=", 1)
                 if opt_name in valid:
+                    if opt_name == "uversionmangle": opt_name = "versionmangle"
                     cleaned_opts.append('%s="%s"' % (opt_name, opt_value))
             opts = " ".join(cleaned_opts)