Proposed change of wait_for using regex

[panicking]

Is this consider an acceptable change?

diff --git a/labgrid/driver/commandmixin.py b/labgrid/driver/commandmixin.py
index 4c187681..ccad82f3 100644
--- a/labgrid/driver/commandmixin.py
+++ b/labgrid/driver/commandmixin.py
@@ -1,3 +1,5 @@
+import re
+
 from time import sleep
 
 from ..util import Timeout
@@ -23,12 +25,12 @@ class CommandMixin:
 
         Args:
             cmd (str): command to run on the shell
-            pattern (str): pattern as a string to look for in the output
+            pattern (str): regex pattern string to look for in the output
             timeout (float): timeout for the pattern detection
             sleepduration (int): sleep time between the runs of the cmd
         """
         timeout = Timeout(timeout)
-        while not any(pattern in s for s in self.run_check(cmd)) and not timeout.expired:
+        while not any(re.search(pattern, s) for s in self.run_check(cmd)) and not timeout.expired:
             sleep(sleepduration)
         if timeout.expired:
             raise ExecutionError("Wait timeout expired")

[Bastian-Krause]

That diff would cause a change in behavior for public API, so we can't do that. Before adding a new method, can you elaborate on your use case?