Fixing launch behavior for various Windows shell environments (#2217)

fixing behavior for different windows shell environments

Author: raph-luc

src/ansys/fluent/core/launcher/launcher.py

@@ -252,8 +252,11 @@ def _build_fluent_launch_args_string(**kwargs) -> str:
             launch_args_string += v["fluent_format"].replace("{}", str(argval))
     addArgs = kwargs["additional_arguments"]
     if "-t" not in addArgs and "-cnf=" not in addArgs:
-        mlist = load_machines(ncores=kwargs["processor_count"])
-        launch_args_string += " " + build_parallel_options(mlist)
+        parallel_options = build_parallel_options(
+            load_machines(ncores=kwargs["processor_count"])
+        )
+        if parallel_options:
+            launch_args_string += " " + parallel_options
     return launch_args_string
 
 
@@ -433,15 +436,20 @@ def _generate_launch_string(
 ):
     """Generates the launch string to launch fluent."""
     if _is_windows():
-        exe_path = '"' + str(get_fluent_exe_path(**argvals)) + '"'
+        exe_path = str(get_fluent_exe_path(**argvals))
+        if " " in exe_path:
+            exe_path = '"' + exe_path + '"'
     else:
         exe_path = str(get_fluent_exe_path(**argvals))
     launch_string = exe_path
     launch_string += _build_fluent_launch_args_string(**argvals)
     if meshing_mode:
         launch_string += " -meshing"
-    launch_string += f" {additional_arguments}"
-    launch_string += f' -sifile="{server_info_filepath}"'
+    if additional_arguments:
+        launch_string += f" {additional_arguments}"
+    if " " in server_info_filepath:
+        server_info_filepath = '"' + server_info_filepath + '"'
+    launch_string += f" -sifile={server_info_filepath}"
     launch_string += " -nm"
     launch_string = _update_launch_string_wrt_gui_options(
         launch_string, show_gui, additional_arguments

src/ansys/fluent/core/launcher/watchdog.py

@@ -86,8 +86,12 @@ def launch(
             python_executable = pythonw_executable
         else:
             logger.debug("Could not find Windows 'pythonw.exe' executable.")
-        python_executable = '"' + str(python_executable) + '"'
-        watchdog_exec = '"' + str(watchdog_exec) + '"'
+        python_executable = str(python_executable)
+        watchdog_exec = str(watchdog_exec)
+        if " " in python_executable:
+            python_executable = '"' + str(python_executable) + '"'
+        if " " in watchdog_exec:
+            watchdog_exec = '"' + str(watchdog_exec) + '"'
 
     # Command to be executed by the new process
     command_list = [