On Thu, 28 Apr 2022 13:53:30 +0000, Seymour J Metz wrote:

>The separator line is CRLF, no other character. A line containing SP CR LF 
>will not work. I suspect that the SMTP and CSSMTP external writers have the 
>smarts to strip out extraneous spaces; that should be easy to test.
> 
Easy indeeed.  In my previous ply, via LISTSERV HTML interface, Included:
<SP><CRLF>
<CRLF>
LISTSERV preserved both.  In Lionel's example, every line was padded
with <SP> to 80 characters (nearly -- some appeared a byte shorter.)

"the smarts to strip out extraneous spaces" is wishful thinking. On CMS
SMTP or RSCS stripped trailing spaces from a uuencoded attachment.
I needed to write a filter to restore them.

Utilities, including ISPF Edit, should preserve the users' text; neither
adding spaces users didn't type nor removing spaces users type.

-- 
gil

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