Zugg Software :: View topic - %0 vs. %-1, also {someAlias %0}, drop unwanted parameters from alias usage.

Wanderer Joined: 03 Feb 2007 Posts: 64

Thanks in advance!

1st question
I had some old alias' from like 1992,
and I had used %0 alot to mean everything (parameter) after an alias

I now see most scripts using %-1
and I read %-1 is The first, and every following parameter, %-2 is the 2nd and all parameters... so on and so on.

Is there still a place for %0, is it backwards compatibility, should I start using %-1 and convert all my old %0's?

2nd question.
I had some alias set like
#alias {somealias %0} {#exec say @0}
is that like a tintin convert remenant from my solaris days at teh university, and I should dump the %0 after the alias and remove the @0?

3rd question
What is the respectable way to make an alias not append any parameters or extra text to it's last command?
make a silly if to use %0, but then not output it anywhere (or %-1 based on the answer to question 1?)

Posted: Thu Jan 17, 2008 4:03 am

%0 only works for compatability. Use %-1 from now on.

Your second example in invalid. Parameters are automatically put into the %nn and %-nn variables. You also only need #exec when you're trying to evaluate something before you send it to the MUD (for example, "send the contents of @Command to the MUD" would be "#exec @Command"). I believe this does the same thing:

#alias somealias {say %-1}

Your third example, if your alias may have unused parameters, add a #noop command to the end. Better would be simply to make sure you use all the parameters your alias receives, though.

Wanderer Joined: 03 Feb 2007 Posts: 64

Thanks Fang )