[San-Diego-pm] Text substitution

[Joel Fentin]

The following code adds bold tags to the desired text. But it also 
changes the case.

$Text = 'Aaa bbb AAA bbb aaa';                #original text
$SearchFor = 'aAa';                           #what we're looking for
$Text =~ s/$SearchFor/<b>$SearchFor<\/b>/gi;  #disp search text bold

There might be a nifty regular expression that adds the tags but 
inflicts no change of case. I haven't figured it out.
=================================
I solved the problem with this unhandy code:

$Where = length($Text);                  #start search at end of string
$CopyOfText = lc($Text);                      #make a low case copy
$CopyOfSearchFor = lc($SearchFor);            #make a low case copy
$SearchForLength = length($SearchFor);
while($Where > -1)                    #loop while desired text is found
{
   $Where = rindex($CopyOfText,$CopyOfSearchFor,$Where); #locate desired 
text in string
   if($Where > -1)                      #if desired text is in string...
   {
     $ExistingText = substr($Text, $Where, $SearchForLength); #get a 
copy of it
     substr($Text, $Where, $SearchForLength) = "<b>$ExistingText</b>"; 
#add bold tags to it
     $Where--;                          #next search starts 1 chr to left
   }
}

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