SoloCDM asked,
| What is UUCA?
It's the Useless Use of Cat Award, given when someone cats one file to a pipe
to another program instead of using the "<" redirector to make the second
program just take its input from that file without invoking cat or making the
shell set up a pipe.
| That's much like what a friend of mine put together to remove "\n"
| along with text:
|
| #!/usr/bin/sed -f
| /top/{
| N
| s/top\( \|\n\)bottom/top\1bottom/
| P
| D
| }
Originally, I had it check ahead only on matches to /regexp1$/, but to sim-
plify the code I took that out and had it check every pair of lines.
The \| construct is not a good idea; many seds do not support it. But as you
see, \n is there only because after the N instruction there are more than one
line in the pattern space.
What is strange is that your friend's code says to replace the space or the
newline with itself: in other words, to make no change at all. According to
your previous post, you wanted the newline and the two expressions deleted.
If you want my suggested code in a sed script file, it could be just like
that, except that the s instruction should read
s/top\nbottom//
with a null replacement string, if I understood your goal correctly.
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