Ron Aaron wrote:
What I wish to do is accumulate text into a paragraph "as I go". My simple
approach is to allocate a box, and then unbox and add the text. But this doesn't work as
I intend:
\newbox\textbox
\def\addbox#1{
\setbox\textbox\vbox{
\unvbox\textbox#1
}
}
\addbox{Hello}
\addbox{there!}
What I get is each appended bit of text in a separate line. I've tried to "\unskip" and
"\unkern" etc. after the \unvbox, but whatever I do I get a list of lines rather than a
paragraph as I would like. So far I haven't found any answers in my searching, so if one of you
would be kind enough to point me in the right direction I would be appreciative.
Although you probably /can/ do it via a \vbox, you would have
to somehow get at the anonymous \hbox that will lie therein;
easier, IMHO, is to use an \hbox directly or a token-list
register :
\newbox \textbox
\def \addbox #1%
{%
\setbox \textbox = \hbox
\bgroup
\unhbox \textbox #1%
\egroup
}
\addbox {Hello}
\addbox {there!}
\unhbox \textbox
\end
\newtoks \texttoks
\def \addtoks #1%
{%
\texttoks = \expandafter {\the \texttoks #1}
}
\addtoks {Hello}
\addtoks {there!}
\the \texttoks
\end
Philip Taylor
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