On Sunday 17 July 2005 3:19 am, Paul Eggert wrote:
> Stepan Kasal <kasal@xxxxxx> writes:
> > I noticed that Paul Eggert uses '{print $ 1}'.
>
> Yes, I found that to be by far the best solution, as '$ 1' makes it
> clear that it's the Awk '$1' rather than the M4 '$1'.
>
> The $[1], [$]1, and $[]1 solutions are used when you're trying to
> quote the m4 '$1', and they work for Awk too, but it might confuse the
> reader into thinking that another level of M4 quoting might be
> involved. (The @S|@1 solution is too ugly for words, of course.)
And it was I who suggested it. Of course, I agree that it is horrendously
ugly. I only mentioned it because I recently found it useful as a quick work
around for quoting $[#] in a shell fragment in an AC_DEFUNed macro -- in one
context I was finding that over quoted, in another under quoted. The
quadrigraph solved the problem, until I was able to find a more elegant way
around it -- the shell, of course, doesn't allow the space between the `$'
and the `#'.
Regards,
Keith.
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