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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SANDBOX-206) backslash before quote character gives an error
Date Fri, 04 Jan 2008 17:26:34 GMT

    [ https://issues.apache.org/jira/browse/SANDBOX-206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12555992#action_12555992
] 

Yonik Seeley commented on SANDBOX-206:
--------------------------------------

It's interesting... looking at CSVParserTest.testBackslashEscaping(), much of this is deliberate:
{code}   
    String code =
      "one,two,three\n"
      + "on\\\"e,two\n"
      + "on\"e,two\n"
      + "one,\"tw\\\"o\"\n"
      + "one,\"t\\,wo\"\n"
      + "one,two,\"th,ree\"\n"
      + "\"a\\\\\"\n"
      + "a\\,b\n"
      + "\"a\\\\,b\"";
    String[][] res = {
        { "one", "two", "three" },
        { "on\\\"e", "two" },
        { "on\"e", "two" },
        { "one", "tw\"o" },
        { "one", "t\\,wo" },  // backslash in quotes only escapes a delimiter (",")
        { "one", "two", "th,ree" },
        { "a\\\\" },     // backslash in quotes only escapes a delimiter (",")
        { "a\\", "b" },  // a backslash must be returnd 
        { "a\\\\,b" }    // backslash in quotes only escapes a delimiter (",")
      };
{code}

Does anyone have knowledge of why this particular escaping mechanism is used?

> backslash before quote character gives an error
> -----------------------------------------------
>
>                 Key: SANDBOX-206
>                 URL: https://issues.apache.org/jira/browse/SANDBOX-206
>             Project: Commons Sandbox
>          Issue Type: Bug
>          Components: CSV
>         Environment: Windows, SOLR 1.2
>            Reporter: Michael Lackhoff
>
> A CSV-field with the contents "This is text with a \""quoted"" string" gives the error
> "invalid  char between encapsualted token end delimiter". If the backslash is not immediately
before the double quote, everything is fine.
> The same error occurs when the backslash is the last character in the field (directly
before the delimiter), like:
> "This is a text with a backslash \".
> Here the reason might be that the backslash also works as an escape character like in
> "This is a field with a \"quoted\" text" (no error, just the quotes in the resulting
field)

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