lvyanquan commented on PR #4473:
URL: https://github.com/apache/flink-cdc/pull/4473#issuecomment-5749007608

   Hi, @sd4324530.
   
   I suggest adding a section to the route documentation that explains the 
behavior in Flink CDC 3.6.0, the corrected behavior introduced by this change, 
and the potential compatibility impact on existing jobs.
   
   It would also be helpful to add a test that genuinely verifies 
multi-character capture groups. For example, use a sink pattern such as 
`new_db_6.table_$1_suffix`, where the old implementation produces 
`table_1_suffix3` for `table_13`, while the corrected implementation produces 
`table_13_suffix`.


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