[OS X TeX] help with \newcommand

[Ramón Figueroa-Centeno]

Aloha,

I want to define a new command that will make my life a lot easier. Here is
what I would like:

\newcommand{\foo}[1]{#1 $\#1$}

So that I could invoke it as "\foo{aleph}" I get the same as if I typed
"aleph $\aleph$" (no backslash on the first character).

Also, much harder (I think):

a command that would do URL encoding right from within LaTeX to pass
arguments to the hyperref package:

\newcommand{\foo2}[1]{\href{<#1 url encoded>}{#1}}

so that "\foo2{Hello you}" would yield the same as typing
"\href{http://Hello%20you}{Hello you}"

Thanks,

Ramón
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