The spaces are being handled by `env`: $ env "-S echo hello world" hello world https://www.gnu.org/software/coreutils/manual/html_node/env-invocation.

The spaces are being handled by `env`: $ env "-S echo hello world" hello world https://www.gnu.org/software/coreutils/manual/html_node/env-invocation.html#g_t_002dS_002f_002d_002dsplit_002dstring-usage-in-scripts https://www.gnu.org/software/coreutils/manual/html_node/env-...