jkershaw3 opened a new issue, #5770:
URL: https://github.com/apache/jmeter/issues/5770

   Using an XPath or XPath2 extractor on a http sampler.
   If the http sampler fails, or the response is empty, or not in the expected 
format, the extractor fails and appends text to its failure message
   This appended text inserts a new line character before the appended text.
   The new line character is logged by listener when logging the failure 
message, and breaks the file format when the listener is logging as CSV.
   
   These files
   ass.setFailureMessage(thrown.getLocalizedMessage()+"**\n**See log file for 
further details.");
   [Line 199 XPath 
Extractor](https://github.com/apache/jmeter/blob/c7279348335b820c35ee570462cb2e0b4eb1c370/src/components/src/main/java/org/apache/jmeter/extractor/XPathExtractor.java)
   
   ass.setFailureMessage(thrown.getLocalizedMessage()+"**\n**See log file for 
further details.");
   [Line 165 XPath2] 
(https://github.com/apache/jmeter/blob/c7279348335b820c35ee570462cb2e0b4eb1c370/src/components/src/main/java/org/apache/jmeter/extractor/XPath2Extractor.java)
   
   Example CSV output : 
   ```
   
timeStamp,elapsed,label,responseCode,responseMessage,threadName,dataType,success,failureMessage,bytes,sentBytes,grpThreads,allThreads,URL,Filename,Latency,Encoding,SampleCount,ErrorCount,Hostname,IdleTime,Connect
   2023/02/03 10:16:46.263,213,Test,502,FailureMessage,Thread Group 
1-1,text,false,"Premature end of file.
   See log file for further 
details.",0,0,1,1,null,,0,ISO-8859-1,1,1,MachineName,0,0
   ```
   
   This should look like 
   ```
   
timeStamp,elapsed,label,responseCode,responseMessage,threadName,dataType,success,failureMessage,bytes,sentBytes,grpThreads,allThreads,URL,Filename,Latency,Encoding,SampleCount,ErrorCount,Hostname,IdleTime,Connect
   2023/02/03 10:16:46.263,213,Test,502,FailureMessage,Thread Group 
1-1,text,false,"Premature end of file. See log file for further 
details.",0,0,1,1,null,,0,ISO-8859-1,1,1,SBGMLXNK094VJCR,0,0
   ```
   
   The problem this causes is the file then cannot be processed as a valid CSV 
without manually correcting/removing the new lines, eg a post test JMeter 
report cannot be generated as it cannot read the file as a CSV format.


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