Please describe the problem:
When a mail message comes in with tabs in the headers (for alignment say), evolution seems to be stripping them out.

Steps to reproduce:


Actual results:


Expected results:


Does this happen every time?


Other information:
Here is the header of a mail message as it resides on my IMAP server:

(you just gotta know bz is going to introduce additional wrapping -- hopefully it's not too bad)

X-Spam-Status: Yes, score=19.3 required=6.5 tests=BAYES_99,DCC_CHECK,
        DIGEST_MULTIPLE,HTML_IMAGE_RATIO_04,HTML_MESSAGE,MIME_HTML_MOSTLY,
        MPART_ALT_DIFF,PYZOR_CHECK,RAZOR2_CF_RANGE_51_100,RAZOR2_CF_RANGE_E4_51_100,
        RAZOR2_CF_RANGE_E8_51_100,RAZOR2_CHECK,RDNS_NONE,SPF_PASS,URIBL_BLACK,
        URIBL_JP_SURBL,URIBL_OB_SURBL autolearn=spam version=3.2.4
X-Spam-Report: 
        *  1.5 URIBL_JP_SURBL Contains an URL listed in the JP SURBL blocklist
        *      [URIs: manipulatespace.com]
        *  1.5 URIBL_OB_SURBL Contains an URL listed in the OB SURBL blocklist
        *      [URIs: manipulatespace.com]
        *  2.0 URIBL_BLACK Contains an URL listed in the URIBL blacklist
        *      [URIs: easemorning.com]
        *  3.5 BAYES_99 BODY: Bayesian spam probability is 99 to 100%
        *      [score: 1.0000]
        * -0.0 SPF_PASS SPF: sender matches SPF record
        *  0.2 HTML_IMAGE_RATIO_04 BODY: HTML has a low ratio of text to image area
        *  0.0 MIME_HTML_MOSTLY BODY: Multipart message mostly text/html MIME
        *  0.0 HTML_MESSAGE BODY: HTML included in message
        *  0.7 MPART_ALT_DIFF BODY: HTML and text parts are different
        *  1.5 RAZOR2_CF_RANGE_E8_51_100 Razor2 gives engine 8 confidence level
        *      above 50%
        *      [cf:  62]
        *  1.5 RAZOR2_CF_RANGE_E4_51_100 Razor2 gives engine 4 confidence level
        *      above 50%
        *      [cf: 100]
        *  0.5 RAZOR2_CHECK Listed in Razor2 (http://razor.sf.net/)
        *  0.5 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50%
        *      [cf: 100]
        *  3.7 PYZOR_CHECK Listed in Pyzor (http://pyzor.sf.net/)
        *  2.2 DCC_CHECK Listed in DCC (http://rhyolite.com/anti-spam/dcc/)
        *  0.0 DIGEST_MULTIPLE Message hits more than one network digest check
        *  0.1 RDNS_NONE Delivered to trusted network by a host with no rDNS

I should note that the whitespace at the beginning of the lines is in fact a <tab><space> in the file.  I could not get that representation here in bz.

However evolution mangles this as:

X-Spam-Status: Yes, score=19.3 required=6.5 tests=BAYES_99,DCC_CHECK,
 DIGEST_MULTIPLE,HTML_IMAGE_RATIO_04,HTML_MESSAGE,MIME_HTML_MOSTLY,
 MPART_ALT_DIFF,PYZOR_CHECK,RAZOR2_CF_RANGE_51_100,RAZOR2_CF_RANGE_E4_51_100,
 RAZOR2_CF_RANGE_E8_51_100,RAZOR2_CHECK,RDNS_NONE,SPF_PASS,URIBL_BLACK,
 URIBL_JP_SURBL,URIBL_OB_SURBL autolearn=spam version=3.2.4
X-Spam-Report:  *  1.5 URIBL_JP_SURBL Contains an URL listed in the JP
 SURBL blocklist *      [URIs: manipulatespace.com] *  1.5 URIBL_OB_SURBL
 Contains an URL listed in the OB SURBL blocklist *      [URIs:
 manipulatespace.com] *  2.0 URIBL_BLACK Contains an URL listed in the URIBL
 blacklist *      [URIs: easemorning.com] *  3.5 BAYES_99 BODY: Bayesian
 spam probability is 99 to 100% *      [score: 1.0000] * -0.0 SPF_PASS SPF:
 sender matches SPF record *  0.2 HTML_IMAGE_RATIO_04 BODY: HTML has a low
 ratio of text to image area *  0.0 MIME_HTML_MOSTLY BODY: Multipart message
 mostly text/html MIME *  0.0 HTML_MESSAGE BODY: HTML included in message * 
 0.7 MPART_ALT_DIFF BODY: HTML and text parts are different *  1.5
 RAZOR2_CF_RANGE_E8_51_100 Razor2 gives engine 8 confidence level *     
 above 50% *      [cf:  62] *  1.5 RAZOR2_CF_RANGE_E4_51_100 Razor2 gives
 engine 4 confidence level *      above 50% *      [cf: 100] *  0.5
 RAZOR2_CHECK Listed in Razor2 (http://razor.sf.net/) *  0.5
 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50% *      [cf:
 100] *  3.7 PYZOR_CHECK Listed in Pyzor (http://pyzor.sf.net/) *  2.2
 DCC_CHECK Listed in DCC (http://rhyolite.com/anti-spam/dcc/) *  0.0
 DIGEST_MULTIPLE Message hits more than one network digest check *  0.1
 RDNS_NONE Delivered to trusted network by a host with no rDNS

So it seems that evolution is removing the tabs.  I wish it wouldn't.