Message-Id: <199402081501.AA24242@quepasa.cs.tu-berlin.de>
Reply-To: Mailing list for the LaTeX3 project <LATEX-L@DHDURZ1.BITNET>
Date:         Tue, 8 Feb 1994 14:55:56 LCL
From: Mike Piff <M.Piff@sheffield.ac.uk>
Sender: Mailing list for the LaTeX3 project <LATEX-L@DHDURZ1.BITNET>
To: Multiple recipients of list LATEX-L <LATEX-L@DHDURZ1.BITNET>
Subject:      Re: A philosophical question about packages and options
Status: R

%>Date:          Tue, 8 Feb 1994 14:08:55 GMT
%>Reply-to:      Mailing list for the LaTeX3 project <LATEX-L@DHDURZ1.EARN>
%>From:          David Carlisle <carlisle@computer-science.manchester.ac.uk>
%>Subject:       Re: A philosophical question about packages and options
%>To:            Multiple recipients of list LATEX-L <LATEX-L@DHDURZ1.EARN>

%>
%>Mike> \usepackage[mjplet]{somas}
%>Mike> where mjplet is an option that modifies the behaviour of somas.
%>Mike> However, presumably I can't do that
%>
%>Despite some reports to the contrary, the LaTeX3 team are not trying
%>to stop you doing anything:-)
%>
%>somas.sty
%>can look like this
%>
%>\DeclareOption{no-logo}{code to suppress PS dept log}
%>\DeclareOption{someoption}{code to do something}
%>...
%>...
%>\DeclareOption*{%
%>  \InputIfFileExists{\CurrentOption.pls}%
%>  {}% input the Personal  Letter Style dont do anything else
%>  {\@unknownoptionerror}% If a .pls file is not there, complain
%>  }
%>
%>Then each person can put their personal customisations in a file
%>name.pls
%>
%>and \usepackage[name]{somas}
%>works as requested.
%>
%>Actually it might be better to make somas into a class rather than a
%>package (it can \LoadClass{letter})
%>
%>David
%>
Alan Jeffrey just suggested something similar. But there were two problems.

1) somas.sty was loaded from another directory rather than somas.cls from the
current directory.

2) I then tried:

%somas.sty
\ProvidesPackage{somas}
\DeclareOption*{%
   \InputIfFileExists{\CurrentOption.clo}{}{\OptionNotUsed}%
}
\endinput


%mjplet.clo
\name{Dr M. J. Piff}       % In letterhead
\signature{M. J. Piff}  % at end of letter
\telephone{(0742)~824431 (direct)\\824366/7 (secretaries)}
\extension{}
\fax{}
\email{M.Piff@shef.ac.uk}
\oddsidemargin0in
\textwidth6.25in


and


\documentclass[12pt]{letter}
\usepackage[mjplet]{somas}
\begin{document}

\end{document}


and got


This is emTeX (tex386), Version 3.1415 [3c-beta10] (preloaded format=latex2e
94.2.7)  8 FEB 1994 14:32
**&latex2e test
(test.tex
LaTeX2e <1994/02/03> PRELIMINARY TEST RELEASE
(l:/latex2e/letter.cls
Standard Document Class `letter' <1994/02/03>.
(l:/latex2e/size12.clo)
\longindentation=\dimen104
\indentedwidth=\dimen105
\labelcount=\count83
) (somas.sty)
LaTeX error.  See LaTeX manual for explanation.
              Type  H <return>  for immediate help.
! Unknown option `mjplet' for package `somas'.
\@latexerr ...lines \m@ne \errmessage {#1}
                                          \endgroup
l.3 \begin
          {document}
?
(l:/latex2e/test.aux)
Font Note: Check substitution defaults for T1/cmr/m/n on input line 3.
Font Note: ... okay on input line 3.
Font Note: Check substitution defaults for OT1/cmr/m/n on input line 3.
Font Note: ... okay on input line 3.
Font Note: Check substitution defaults for OML/cmm/m/it on input line 3.
Font Note: ... okay on input line 3.
Font Note: Check substitution defaults for OMS/cmsy/m/n on input line 3.
Font Note: ... okay on input line 3.
Font Note: Check substitution defaults for OMX/cmex/m/n on input line 3.
Font Note: ... okay on input line 3.
Font Note: Check substitution defaults for U/cmr/m/n on input line 3.
Font Note: ... okay on input line 3.
 )
Here is how much of TeX's memory you used:
 123 strings out of 56436
 1065 string characters out of 216204
 39109 words of memory out of 262143
 2603 multiletter control sequences out of 10000
 3938 words of font info for 15 fonts, out of 81920 for 254
 0 hyphenation exceptions out of 607
 22i,1n,21p,149b,38s stack positions out of 300i,100n,60p,5000b,1000s

No pages of output.


What am I doing wrong now?

Mike
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Dr M J Piff, School of Mathematics and Statistics, University of %%
%% Sheffield, UK.                    e-mail: M.Piff@sheffield.ac.uk %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%