Sorry, you are right. Pine do change attachment which is recognized as
ASCII text files. Pine thinks the right thing to do, based on the file
extension, is to convert a text file to CR/LF:
http://www.washington.edu/pine/faq/attachments.html#7.2.1
I could not find a way within Pine where I could attach a file in way
where everything is preserved as is, but regarding the actual case
with SiS55x I don't think there is a need for posting the patch
correctly anyway. The patch was not that popular after all.
rgds/hans
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