Support multiple flags in ExtendMatch

Previously, each "option string" defined its own set of passes.
This would produce the wrong behavior for any case where the
user defines an ExtendMatch action with multiple flags.

After this change, the flag name used as a key is the first
in the list of possible flags. This enables ExtendMatch actions
with multiple flags to store everything in a single list.

Signed-off-by: John Pennycook <john.pennycook@intel.com>

Author: Pennycook

codebasin/config.py

@@ -126,6 +126,7 @@ def __init__(
     ):
         self.pattern = kwargs.pop("pattern", None)
         self.format = kwargs.pop("format", None)
+        self.flag_name = option_strings[0]
         super().__init__(option_strings, dest, nargs=nargs, **kwargs)
 
     def __call__(
@@ -143,9 +144,9 @@ def __call__(
             matches = [template.substitute(value=v) for v in matches]
         if self.dest == "passes":
             passes = getattr(namespace, self.dest)
-            if option_string not in passes:
-                passes[option_string] = []
-            passes[option_string].extend(matches)
+            if self.flag_name not in passes:
+                passes[self.flag_name] = []
+            passes[self.flag_name].extend(matches)
         else:
             dest = getattr(namespace, self.dest)
             dest.extend(matches)