I am working on a fairly standard program to search a table and display records. There is one feature though that I am having minor problems with. I wanted the program to highlight the search term used in the text that was returned by the search. To do this I wrote the following function: 
sub HighlightText {
   my ($texttosearch,$searchstring,$color)=@_;
   my $highlighted = "<FONT COLOR='$color'><B>$searchstring</B></FONT>
+";
   $texttosearch =~ s/$searchstring/$highlighted/gi;

   return $texttosearch;
}

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The function seems at first to work perfectly, then I noticed a flaw. If the variable "$searchstring" contains "Foo" and the $texttosearch contains "foo" the search will highlight the text as it should but, because of the way it is written "Foo" now becomes "foo". I need to be able to retain the case of the original text while still being able to search and highlight irregardless of case. I thank you in advance for your help.

In reply to Search Term Highlighting by librarygeek

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