ed and ^M

[Dan Jacobson]

While using ed on a file formatted with ^M's at the end of each
line, the output could be quite disturbing:

# ed /var/spool/news/out.going/884-1005862565-1  
658
1
Newsgroups: tw.bbs.soc.media,tw.bbs.rec.tv
s/$/,soc.culture.taiwan 
,soc.culture.taiwansoc.media,tw.bbs.rec.tv
u
p
Newsgroups: tw.bbs.soc.media,tw.bbs.rec.tv
s/$/xxx
xxxsgroups: tw.bbs.soc.media,tw.bbs.rec.tv
u
s/tv/tv,soc.culture.taiwan 
Newsgroups: tw.bbs.soc.media,tw.bbs.rec.tv,soc.culture.taiwan 
w
678
q

One seems not to be able to keep track of what ed is thinking from
merely looking at the screen.

$ ed --version
GNU ed version 0.2
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