Am 21.07.2011 um 14:34 schrieb Arno Trautmann:
> Patrick Gundlach wrote:
>> Am 21.07.2011 um 14:11 schrieb Arno Trautmann:
>>> I'd like to use the post_linebreak_filter to manipulate the node list, but
>>> only if a macro appears in that given paragraph.
>>
>> Can you use attributes there? Then you can test whether certain attributes
>> are in a paragraph and apply your code.
>
> Yes, and I do in fact. But I'm not sure how this solves my problem here?
> Maybe I'll be more precise on what I want to do:
> I've written a function randomcolor that inserts a color whatsit before
> (push) and after (pull) every glyph in a paragraph, using the
> post_linebreak_filter. Now I want to provide a command \textrandomcolor{}
> that does the same, but only with the text in the argument. For this, I use
> the same function as above, but set an attribute at the beginning of the
> argument and unset it at the end, and in the function, I test for this
> attribute. Fine.
That's what I wanted to write.
> However, in a paragraph that does /not/ contain any \textrandomcolor, I don't
> want the function to loop through all nodes. Let's say, for performance
> reasons …
Does it really differ (performance wise)?
Patrick
