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	["1463" "Mon" "22" "June" "1998" "14:14:03" "+0200" "Hans Aberg" "haberg@MATEMATIK.SU.SE" nil "33" "Re: l3 function names" "^Date:" nil nil "6" nil nil nil nil nil]
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Date:         Mon, 22 Jun 1998 14:14:03 +0200
From: Hans Aberg <haberg@MATEMATIK.SU.SE>
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Subject:      Re: l3 function names
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At 19:36 +0100 98/06/21, Javier Bezos wrote:
>Undescore in names
>~~~~~~~~~~~~~~~~~~~
>Changing the _ catcode prevents from using explicit subscript characters.
>I think there are better candidates: "other" character except =, <, >,
>. (sadly), , (ie, comma), - and +. (Namely /, !, ?, : (already used), ;,
>@, |...)

  This is something I worried about at first. But it is possible to build a
new development level above the fundamental one where _ works as usual:
Then one would either not be able to use command names with _, or use a
special command to invoke them or create them. For example, within <...>, _
works as an underscore space, and without as a subscript command.

  So I think one should not worry about it at this the most fundamental
development level, and just use whatever is best for describing the logical
structure.

>Argument specifiers
>~~~~~~~~~~~~~~~~~~~~
..
>\let:NN{\arg1}{\arg2} is particularly amusing because the first N is
>\arg1 and the second one is { with an unmatched brace.

  One variation could be \<module name>_<command name>:<argument type>:,
with a final ":" delimiting the argument type (\let:N: etc). It would be
simpler to parse also, if the argument type should be stripped off the
command name.

  Hans Aberg
                  * Email: Hans Aberg <mailto:haberg@member.ams.org>
                  * Home Page: <http://www.matematik.su.se/~haberg/>
                  * AMS member listing: <http://www.ams.org/cml/>