Bug 44198

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Description of problem:
The formail binary from procmail 3.14-2 tries to "clean up" message headers
that contain whitespace between the header name and the colon, e.g.
"Subject : test" becomes "Subject: test". But it does this for all lines,
even within the body of a message. It should only do this sort of thing to
message headers.

Data corruption of course is rather evil. PGP-signed messages may be
rendered unverifiable. Source code or other important data sent via email
may be rendered unusable or even dangerous.

How reproducible:
Always

Steps to Reproduce:
1. printf 'Subject: test\nTo: test\nFrom: test\n\nhere is text\nNotaheader
: this is a body line\n' | formail -f

	

Actual Results:  "Notaheader : this is a body line" is changed to
"Notaheader: this is a body line" (the space between "Notaheader" and the
colon is removed).


Expected Results:  formail should echo exactly what printf gave it, as the
Subject/To/From headers are correct, and the "Notaheader" line is in the
message body.

Additional info:

The HISTORY file at www.procmail.org suggests that this problem was
introduced in procmail 3.14 and fixed in procmail 3.15. I have tested the
formail binary from the official procmail 3.15.1 distribution, and it does
seem to handle these messages properly.