JAMES-1489 IMAP/ Search function > IMAP cannot search the keyword contains special characters

[tlle14]

Actual Result

When search with keyword contains special characters, the search always returns no result Example: Keyword Đây là một email test 1=1;-

Expected Result

IMAP should be able to search with a special characters keyword

Environment

• Thunderbird /Bluemail
• DEV production

[chibenwa]

https://issues.apache.org/jira/browse/JAMES-1489 is related

[chibenwa]

OK, this SHOULD be easy: We loose a charset somewhere...

https://tools.ietf.org/html/rfc3501#section-6.4.4

      The OPTIONAL [CHARSET] specification consists of the word
      "CHARSET" followed by a registered [CHARSET].  It indicates the
      [CHARSET] of the strings that appear in the search criteria.
      [MIME-IMB] content transfer encodings, and [MIME-HDRS] strings in
      [RFC-2822]/[MIME-IMB] headers, MUST be decoded before comparing
      text in a [CHARSET] other than US-ASCII.  US-ASCII MUST be
      supported; other [CHARSET]s MAY be supported.

      If the server does not support the specified [CHARSET], it MUST
      return a tagged NO response (not a BAD).  This response SHOULD
      contain the BADCHARSET response code, which MAY list the
      [CHARSET]s supported by the server.

I do not see charset support TBH.

-> Step 1: Support ASCII charset only -> Step 2: Support ASCII charset...

[chibenwa]

Ok, 2 problems:

• continuation (ie {34+}) is badly handled by James
• charset only applies for the next field, not to all

[chibenwa]

Edit:

• UTF-8 single criteria works fine

• That is the multi-criteria of it that is being broken...

  See https://github.com/apache/james-project/pull/345

[chibenwa]

https://github.com/apache/james-project/pull/980 is my renewed take on this.