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Odd Formatting Problem

  • To: mathgroup at
  • Subject: [mg35033] Odd Formatting Problem
  • From: aes <siegman at>
  • Date: Thu, 20 Jun 2002 02:13:44 -0400 (EDT)
  • Organization: Stanford University
  • Sender: owner-wri-mathgroup at

I have several expressions inside a Module that I've typed in the 
general form

labelTwoText = "OUTPUT:\n"
    <> "\nK2 = " <> ToString[K2]
    <> "\nG2 = " <> ToString[G2 // N]
    <> "\ntheta2 = " <> ToString[theta2/degrees // N]
    <> "\nthetaC = " <> ToString[thetaC/degrees // N]
    <> "\nk2 = " <> ToString[k2 // N];

where I've inserted the CRs at the end of each line deliberately 
for readability.

(The expression is intended to collect text to be inserted into 
graphics using Text[] and Show[].  The real-life examples are 
three or four times as long.)

Sometimes these work fine; sometimes for unknown reasons they get 
screwed up -- especially if I cut and paste the expression within 
the Module to move it or duplicate it.  When this happens:

1) I get the error message

      Syntax::sntxb: Expression cannot begin with "<>
      K2 = <>ToString[K2//N]".

2)  Some of the lines become indented by slightly different 
amounts before the "<>"'s.

3)  The program is now totally unstoppable:  Interrupt Evaluation 
or Abort Evaluation no longer stop the program, which will 
apparently Run forever.  Only way out is to Quit the front end, 
then Quit the kernal, and restart the app.

3)  Once you've reopened the notebook, laboriously doing a delete 
and then CR at the beginning of each line is the only way to 
restore functionality,

Obviously I'll stop typing them this way and let Mathematica make the line 
breaks -- but this does seem like some kind of bug?

(Mathematica on a Mac G3 PB running OS 8.6)

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