Cfrgtkky

I use spreadtab with STcopy. For some reason, there is redundant whitespace at the left of the table. Here is a minimal working example:

documentclass{standalone}

usepackage{spreadtab}  

begin{document}

begin{spreadtab}{{tabular}{lll}}

STcopy{>,v}{pow(1,1)}

& & 

\

& & 

\

& & 

end{spreadtab}

end{document}

In a "standalone" document, it is easy to see the extra space at the left.
The extra space becomes larger when I add more rows.

Is this a bug?

The problem is the same as in What makes my line get shifted to the left when I invoke LoadConstants? and the solution again the same: add

makeatletter

defFP@pow#1#2#3{% <---- This was unprotected

  % #1 macro, which gets the result

  % #2 base

  % #3 exponent

  %

  FP@beginmessage{POW}%

  %

  {defFP@beginmessage##1{}%

   defFP@endmessage##1{}%

   %

   FPifzero{#2}%

     FP@pow@zero{#3}%

   else%

     FPlnFP@tmpd{#2}%

     FPmulFP@tmpdFP@tmpd{#3}%

     FPexpFP@tmpFP@tmpd%

   fi%

   %

   globalletFP@tmpFP@tmp%

  }%

  %

  FP@endmessage{}%

  %

  let#1FP@tmp%

}

makeatother

before begin{document}.

Here's a four row spreadtab after the change:

documentclass{standalone}

usepackage{spreadtab}  



makeatletter

defFP@pow#1#2#3{% <---- This was unprotected

  % #1 macro, which gets the result

  % #2 base

  % #3 exponent

  %

  FP@beginmessage{POW}%

  %

  {defFP@beginmessage##1{}%

   defFP@endmessage##1{}%

   %

   FPifzero{#2}%

     FP@pow@zero{#3}%

   else%

     FPlnFP@tmpd{#2}%

     FPmulFP@tmpdFP@tmpd{#3}%

     FPexpFP@tmpFP@tmpd%

   fi%

   %

   globalletFP@tmpFP@tmp%

  }%

  %

  FP@endmessage{}%

  %

  let#1FP@tmp%

}

makeatother



begin{document}

begin{spreadtab}{{tabular}{lll}}

STcopy{>,v}{pow(1,1)}

& &

\

& &

\

& &

\

& &

end{spreadtab}

end{document}

Elementary, Watson.

How to find the source of the spurious spaces?

I added tracingcommands=1 tracingmacros=1 before begin{spreadtabs} and run LaTeX. Then looked for {blank space} in the log file. Look and behold!

FP@pow #1#2#3-> FP@beginmessage {POW}{def FP@beginmessage ##1{}def FP@end

message ##1{}FPifzero {#2}FP@pow@zero {#3}else FPln FP@tmpd {#2}FPmul FP

@tmpd FP@tmpd {#3}FPexp FP@tmp FP@tmpd fi global let FP@tmp FP@tmp }F

P@endmessage {}let #1FP@tmp 

#1<-FP@valc 

#2<-FP@vala 

#3<-FP@valb 

{blank space  }



FP@beginmessage #1->ifFPmessages message {( FP-#1}fi 

#1<-POW

{begin-group character {}

{def}

{def}

The space was added in the middle of expanding FP@pow. Where did I see that? Oh, yes! The old question I referenced. Problem solved. 😀

Well, it's the same problem, so I made the answer “community wiki”. Otherwise some respected user could insinuate I get my rep just by chasing missing %.