Re: [NTG-context] ! Extra \else error

11 Dec 2008

      On Thursday 11 December 2008 07:29:15 am Zhichu Chen wrote:
...
Hi Bart,
On Thu, Dec 11, 2008 at 10:21 PM, Bart C. Wise
 wrote:
...
If I change the loop to be the following, I still get the same error:
\def\myloop#1{%
 \tempcnta=\the\startcnt%
 \loop
   \advance \tempcnta by 1
   \if\tempcnta=#1\else \repeat\fi
}
Bart
No, you should define like:
\def\myloop#1{%
 \tempcnta=\the\startcnt%
 \loop
   \advance \tempcnta by 1
   \if\tempcnta<#1\repeat
}
No \else before \repeat in this case and no \fi outside the loop.
Taking a look at the definition, you could find the following
code (something like that, I can't remember clearly):
\def\loop#1\repeat{\def\body{#1}\iterate}
\def\iterate{something to do with \body}
You can see there should not be an extra \else in the \body, and
you don't need the \fi to enclose it.
I don't know whether I've made my point clear.
Chen,

Thanks.  That makes sense now.  However, when I take your code and run it, it 
only goes through 1 iteration of the loop and exits.  I'm puzzled.

Bart