How to put both single quotes (') and double quote (") into the same PRXCHANGE function?

[Alexxxxxxx]

Hello,

How to put both single quotes (') and double quote (") into the same PRXCHANGE function?

I would like to change the company suffix 'LTD LIABILITY CO' to 'LLC' if it is not partioned by the following puncations which are () [] {} ' "  However, it seems that I cannot put the single and double quotes in the same PRXCHANGE function. Could you please give me some suggestion about this?

data have;
input string :$200.;
infile datalines ;
name_S25=prxchange('s/([^\w^\d])LTD[^\w^\d^\{^\}^\[^\]^\(^\)^\'^\"]+LIABILITY[^\w^\d^\{^\}^\[^\]^\(^\)^\'^\"]+CO([^\w^\d])/$1 LLC $2/',-1,cat(strip(compbl(name)),' '));
datalines;
APPLE LTD., LIABILITY CO
'APPLE LTD' LIABILITY CO
"APPLE LTD" LIABILITY CO
APPLE LTD (LIABILITY CO)
APPLE LTD [LIABILITY CO]
{APPLE LTD} LIABILITY CO
;
run;

I expect to get 

name	new_name
APPLE LTD., LIABILITY CO	APPLE LLC	changed
'APPLE LTD' LIABILITY CO	'APPLE LTD' LIABILITY CO	no change
APPLE LTD LIABILITY CO	APPLE LTD LIABILITY CO	no change
APPLE LTD (LIABILITY CO)	APPLE LTD (LIABILITY CO)	no change
APPLE LTD [LIABILITY CO]	APPLE LTD [LIABILITY CO]	no change

[Tom · Accepted solution]

You don't need to do anything special to include a character that is different those used to enclose the string. So to express DON'T enclosed in double quotes you just need to type:

"DON'T"

If you want to include the character used to enclose the string then just double it.  So to express DON'T enclosed in single quotes you need to type:

'DON''T'

So to make a string that has both types of quotes one will be doubled and the other not, depending on what the outer characters are.

'"DON''T"'