sync-diff-inspector: not support regex?

[NewOrForever]

Bug Report

I am currently performing data consistency validation after migrating from MySQL to TiDB. Below is the route rule, and the table-pattern uses the regular expression ~^core_delivery_([1-9]|[0-9])$. When executing the validation, an error occurs:

An error occurred while initializing diff: from upstream: please make sure the filter is correct.: the source has no table to be compared. target-table is wms_saas.core_delivery, please check log info in output_test1/sync_diff.log for full details.

The TiDB version is v8.5.1.
the below is my table-pattern regular expression

[routes.core_delivery-route-rule1]
schema-pattern = "test-shard-merge"
table-pattern = "~^core_delivery_([1-9]|[0-9])$"
target-schema = "test"
target-table = "core_delivery"

But if the table-pattern value is changed to the wildcard format core_delivery_[1-9], the validation proceeds normally. Is the sync_diff_inspector not support regular expression, how to use regular expression?

I have tried several ways:

• ^core_delivery_([1-9]|[0-9])$ -> failed
• /^core_delivery_([1-9]|[0-9])$/ -> failed

./sync_diff_inspector -V

App Name: sync_diff_inspector
Release Version: v7.5.5-1-g37c2dad
Git Commit Hash: 37c2dad9218826a114e3389ac1209367715383ea
Git Branch: HEAD
UTC Build Time: 2025-01-10 06:48:14
Go Version: go1.23.1