invoke_subshell   321 src/execute.c          invoke_subshell (*argv, VISIBLY, old_vfs_dir_vpath != NULL ? NULL : &new_dir_vpath);
invoke_subshell   496 src/execute.c          invoke_subshell (NULL, VISIBLY, new_dir_p);
invoke_subshell    44 src/subshell/subshell.h int invoke_subshell (const char *command, int how, vfs_path_t ** new_dir);