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https://issues.apache.org/jira/browse/MIME4J-244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14536486#comment-14536486
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Andreas Veithen commented on MIME4J-244:
----------------------------------------
In 0.7.2, soft line breaks and more specifically the sequence "=\r\n" are
processed by the following piece of code, with {{b == '='}} and {{b2 == '\r'}}:
{code}
} else if (Character.isWhitespace((char) b2)) {
// soft line break
index = transfer(-1, buffer, index, to, true);
if (b2 != LF) {
blanks.append(b);
blanks.append(b2);
}
} else {
{code}
That looks broken to me because the code doesn't consume the LF character
(which is what causes the problem on the next iteratation) and instead appends
"=\r" to {{blanks}}.
This would mean that:
* The issue is not related to the space before the equal sign as suggested by
the OP. AXIOM-467 actually provides evidence that this occurs regardless of the
character preceding the soft line break.
* The {{lastWasCR}} problem described by Detelin Yordanov is not the root cause
of the present issue. Indeed, when I debugged AXIOM-467, I didn't find any
evidence for that.
> Cannot decode "quoted printable" encoded message which have space before
> equal sign("=") in strict mode
> -------------------------------------------------------------------------------------------------------
>
> Key: MIME4J-244
> URL: https://issues.apache.org/jira/browse/MIME4J-244
> Project: James Mime4j
> Issue Type: Bug
> Components: parser (core)
> Affects Versions: 0.7.2
> Reporter: Detelin Hadzhiev
> Fix For: 0.7.3, 0.8.0
>
>
> Lets assume that we a message encoded using "quoted printable" encoding like
> this:
> "text before eq sign =\r\n text after LF"
> When you try to decode it using QuotedPrintableInputStream in Strict Mode you
> will get following exception:
> java.io.IOException: Found LF without CR
> at
> org.apache.james.mime4j.codec.QuotedPrintableInputStream.read0(QuotedPrintableInputStream.java:195)
> at
> org.apache.james.mime4j.codec.QuotedPrintableInputStream.read(QuotedPrintableInputStream.java:317)
> at
> org.apache.james.mime4j.codec.QuotedPrintableInputStream.read(QuotedPrintableInputStream.java:302)
> at
> org.apache.james.mime4j.codec.QuotedPrintableInputStreamTest.read(QuotedPrintableInputStreamTest.java:199)
> The same is fine using SILENT mode.
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