Improved handling of subcommands (don't allow ACL on first-arg of a sub-command) (#10147)

Recently we added extensive support for sub-commands in for redis 7.0,
this meant that the old ACL mechanism for
sub-commands wasn't needed, or actually was improved (to handle both include
and exclude control, like for commands), but only for real sub-commands.
The old mechanism in ACL was renamed to first-arg, and was able to match the
first argument of any command (including sub-commands).
We now realized that we might wanna completely delete that first-arg feature some
day, so the first step was not to give it new capabilities in 7.0 and it didn't have before.

Changes:
1. ACL: Block the first-arg mechanism on subcommands (we keep if in non-subcommands
  for backward compatibility)
2. COMMAND: When looking up a command, insist the command name doesn't contain
  extra words. Example: When a user issues `GET key` we want `lookupCommand` to return
  `getCommand` but when if COMMAND calls `lookupCommand` with `get|key` we want it to fail.

Other changes:
1. ACLSetUser: prevent a redundant command lookup

0 files changed, 0 insertions, 0 deletions