Re: I can't change startitemize[n]--> startitemize[1]

[Aditya Mahajan <adityam@umich.edu>]

On Thu, 23 Jul 2009, Wolfgang Schuster wrote:

>
> Am 23.07.2009 um 17:05 schrieb Aditya Mahajan:
>
>> I think an easier thing to do will be to follow latex's style of 
>> \newcommand and \renewcommand. That is, all \definecommands should check if 
>> the macro is previously defined or not. If it is defined, issue a warning 
>> or an error.
>
> There is \define and \redefine.

I know. What I am asking is that the core macros like \definedescription, 
\defineitemgroups, \definehead, which have the general form

\def\defineSOMETHING%
   {\dodoubleargument\dodefineSOMETHING}

\def\dodefineSOMETHING[#1][#2]%
  {\setvalue{#1}{\dododefineSOMETHING[#2]}

should do some check before the \setvalue. Maybe a universal solution will 
be to change \setvalue so that it uses \define (or a check like define) 
internally.

>> And maybe have some hook to disable the warning/error for those who know 
>> what they are doing.
>
> In this case you can use \def, \edef ...

I meant with commands like \defineSOMETHING above. For example, I once did 
\definecolor[page][s=0.9] instead of what I normally do: 
\definecolor[pagecolor][s=0.9]. Took a while to figure out what was going 
wrong. Some of Xan's error were due to similar things, 
\defineSOMETHING[note], \defineSOMETHING[symbol], etc. If all these 
commands issued a warning that you are redefining existing macro, 
debugging will be much easier. And if you know what you are doing, we 
could have

\redefinecolor[page][s=0.9]

that does not issue a warning. Or the easier to implemnet:

\setupcolors[check=error|warn|ignore]

for all \setupSOMETHING commands where the equivalent \defineSOMETHING 
defines a control sequence.

Aditya
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