srielau commented on PR #52638:
URL: https://github.com/apache/spark/pull/52638#issuecomment-3449226824

   Yeah, I need to investigate and match the existing code in master. 
Coalescing is not new we’re merely expanding h its use.
   Sent from my iPhone
   
   On Oct 26, 2025, at 6:54 PM, Wenchen Fan ***@***.***> wrote:
   
   
   
   @cloud-fan commented on this pull request.
   
   ________________________________
   
   In 
sql/core/src/test/scala/org/apache/spark/sql/StringLiteralCoalescingSuite.scala<https://github.com/apache/spark/pull/52638#discussion_r2464251176>:
   
   >        // Regular string followed by R-string
   -      ("""SELECT 'newline ' R'\n'""", """newline \n"""),
   +      ("""SELECT 'newline ' R'\n'""", raw"newline \n"),
   
   
   what's the coalesced token for SELECT 'newline ' R'\n'? it becomes R'newline 
\n'? then what if the normal string literal has escaping inside it?
   
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