Typical shell-supported command sets:
- `cmd`
- `cmd --arg`
- `cmd --arg=value`
- `ENV_VAR="value" cmd`
- `ENV_VAR="value" cmd --arg`
- `ENV_VAR="value" cmd --arg=value`
The listed commands above are now better managed.
Initially, the command types `cmd --arg=value` or `ENV_VAR="value" cmd --arg=value` were not correctly parsed. After finding a solution to this problem, I conducted further tests and discovered cases that were not currently handled. These cases are as follows:
- `cmd "arg with space"`
- `ENV_VAR="value with space" cmd`