Arguments of XREVRANGE are flipped

[talbii]

Description

In XRANGE, the - and + tokens select the minimum and maximum IDs, respectively. So, the command

XRANGE stream - +

selects all items in the stream. In the context of XREVRANGE, the arguments to the command are flipped, i.e.,:

XREVRANGE stream end begin [COUNT count]

so, calling XREVRANGE stream - + should produce no meaningful output, however, it outputs the stream (in reverse):

127.0.0.1:6379> XRANGE stream - +
1) 1) "1676993775209-0"
   2) 1) "f1"
      2) "v1"
2) 1) "1676993779209-0"
   2) 1) "f2"
      2) "v2"
3) 1) "1676993781122-0"
   2) 1) "f3"
      2) "v3"
127.0.0.1:6379> XREVRANGE stream - +
1) 1) "1676993781122-0"
   2) 1) "f3"
      2) "v3"
2) 1) "1676993779209-0"
   2) 1) "f2"
      2) "v2"
3) 1) "1676993775209-0"
   2) 1) "f1"
      2) "v1"

whereas XREVRANGE + - produces an empty array.

Likewise for specific ranges.