AndrewJSchofield opened a new pull request, #20438:
URL: https://github.com/apache/kafka/pull/20438

   This trivial PR improves the so-called metavariable names in the usage 
messages of the verifiable producer/consumer command-line tools. These are the 
names of the replacement variables that appear solely in the usage messages.
   
   Verifiable producer (before):
   ```
   usage: verifiable-producer [-h] --topic TOPIC [--max-messages MAX-MESSAGES] 
[--throughput THROUGHPUT]
                              [--acks ACKS] [--producer.config CONFIG_FILE]
                              [--message-create-time CREATETIME] 
[--value-prefix VALUE-PREFIX]
                              [--repeating-keys REPEATING-KEYS] 
[--command-config CONFIG_FILE]
                              --bootstrap-server HOST1:PORT1[,HOST2:PORT2[...]]
   ```
   
   (after)
   ```
   usage: verifiable-producer [-h] --topic TOPIC [--max-messages MAX-MESSAGES] 
[--throughput THROUGHPUT]
                              [--acks ACKS] [--producer.config CONFIG-FILE]
                              [--message-create-time CREATE-TIME] 
[--value-prefix VALUE-PREFIX]
                              [--repeating-keys REPEATING-KEYS] 
[--command-config CONFIG-FILE]
                              --bootstrap-server HOST1:PORT1[,HOST2:PORT2[...]]
   ```
   
   Verifiable consumer (before):
   ```
   usage: verifiable-consumer [-h] --topic TOPIC [--group-protocol 
GROUP_PROTOCOL]
                              [--group-remote-assignor GROUP_REMOTE_ASSIGNOR] 
--group-id GROUP_ID
                              [--group-instance-id GROUP_INSTANCE_ID] 
[--max-messages MAX-MESSAGES]
                              [--session-timeout TIMEOUT_MS] [--verbose] 
[--enable-autocommit]
                              [--reset-policy RESETPOLICY] 
[--assignment-strategy ASSIGNMENTSTRATEGY]
                              [--consumer.config CONFIG_FILE] [--command-config 
CONFIG_FILE]
                              --bootstrap-server HOST1:PORT1[,HOST2:PORT2[...]]
   ```
   
   (after)
   ```
   usage: verifiable-consumer [-h] --topic TOPIC [--group-protocol 
GROUP-PROTOCOL]
                              [--group-remote-assignor GROUP-REMOTE-ASSIGNOR] 
--group-id GROUP-ID
                              [--group-instance-id GROUP-INSTANCE-ID] 
[--max-messages MAX-MESSAGES]
                              [--session-timeout TIMEOUT-MS] [--verbose] 
[--enable-autocommit]
                              [--reset-policy RESET-POLICY] 
[--assignment-strategy ASSIGNMENT-STRATEGY]
                              [--consumer.config CONFIG-FILE] [--command-config 
CONFIG-FILE]
                              --bootstrap-server HOST1:PORT1[,HOST2:PORT2[...]]
   ```
   
   Verifiable share consumer (before):
   ```
   usage: verifiable-share-consumer
          [-h] --topic TOPIC --group-id GROUP_ID [--max-messages MAX-MESSAGES] 
[--verbose]
          [--acknowledgement-mode ACKNOWLEDGEMENTMODE] [--offset-reset-strategy 
OFFSETRESETSTRATEGY]
          [--command-config CONFIG_FILE] --bootstrap-server 
HOST1:PORT1[,HOST2:PORT2[...]]
   ```
   
   (after):
   ```
   usage: verifiable-share-consumer
          [-h] --topic TOPIC --group-id GROUP-ID [--max-messages MAX-MESSAGES] 
[--verbose]
          [--acknowledgement-mode ACKNOWLEDGEMENT-MODE] 
[--offset-reset-strategy OFFSET-RESET-STRATEGY]
          [--command-config CONFIG-FILE] --bootstrap-server 
HOST1:PORT1[,HOST2:PORT2[...]]
   ```
   


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