Questin about svn log

Dear all:
I have maned the usage of svn log.
But I cannot find any option that can tell me who changes what files
just like the read part I circled in my attach tortoisesvn picture.
I have tried the option "--username', but it only shows the message
that person added at previous versions.
Would someone please tell me how to do the same thing as tortoisesvn
did by svn command?
thanks for your help,
vichy

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