Missing `is_symlink` check?

This is `is_executable` of `is_executable`: https://github.com/fitzgen/is_executable/blob/master/src/lib.rs#L90-L97
This is `is_executable` of `nushell`: https://github.com/nushell/nushell/blob/b39dda05500d92b627685b8251bfe416dc621c08/crates/nu-completion/src/command.rs#L73-L86
If you compare them you will notice that nushell has an additional `is_symlink()` check but `is_executable`'s `is_executable` does not. Is this intentional or is there potentially an unintended omission?