loncom/xml/lontexconvert.pm - diff

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-version 1.50, 2005/02/24 09:06:14
+version 1.53, 2005/02/24 09:44:46
  Line 249  sub postprocess_algebra {
      my ($string)=@_;
      # moodle had these and I don't know why, ignoring them for now
-     # $string =~/\\left\{/\{/g;
+     # $string =~s/\\fun/ /g;
-     # $string =~/\\right\}/\}/g;
-     # $string =~/\\fun/ /g;
+     # sqrt(3,4) -> \sqrt\let{3,4\right}, which is annoying
+     $string =~s/\\left\{/\{/g;
+     $string =~s/\\right\}/\}/g;
+     # sqrt(3,4) means the 4 root of 3
+     $string =~s/\\sqrt{([^,]+),([^\}]+)}/\\sqrt[$2]{$1}/gs;
+     # log(3,4) means the log base 4 of 3
+     $string =~s/\\log\\left\((.+?),(.+?)\\right\)/\\log_{$2}\\left($1\\right)/gs;
+     # remove the extra () in the denominator of a \frac
+     $string =~s/\\frac{(.+?)}{\\left\((.+?)\\right\)}/\\frac{$1}{$2}/gs;
+     &Apache::lonnet::logthis($string);
      return $string;
  }
 ;