fix: quote workdir in job exec prefix to allow to spaces in the workd…

…ir (#1547)

* fix: quote workdir in job exec prefix to allow to spaces in the workdir

* docs

snakemake/executors/__init__.py

@@ -979,7 +979,8 @@ def __init__(
 
     def get_job_exec_prefix(self, job):
         if self.assume_shared_fs:
-            return f"cd {self.workflow.workdir_init}"
+            # quoting the workdir since it may contain spaces
+            return f"cd {repr(self.workflow.workdir_init)}"
         else:
             return ""