With the example above, I suppose I could write some kind of macro, opening
shell output, but it gets much more interesting when I am looking at
program | less
and I do not want to execute program again, and I also want to be able to go
back to un-grepped output without executing program again.
You can type |grep xxx | less, and this will open a sub-less with the
grep output in it. To get back to the ungrepped file, just quit from
the sub-less.
AFAIK there's no builtin support for this.
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