*! version 1.0.0  02/02/93 extrname <exword> utility; STB-13: dm13
program define _crcexn2 /* `exword' varname word certword intovar */
	version 3.0
	local v "`1'"
	local word "`2'"
	local cword "`3'"
	local into "`4'"

	tempvar new
	quietly {
		local d = length("`cword'")
		minlen `d' `into'

		local type : type `v'
		gen `type' `new'=`v'

		replword "`word'" "" 1 `new'
		replace `new'=`v' if `into'!=""
		replace `into'="`cword'" if `new'!=`v'
		replace `v'=trim(`new')
		drop `new'
		compress `v'
		compress `into'
	}
end
exit
/*
	E.g., 

		`exword' myvar "jr." "Jr." exvar

	Removes word "jr." from myvar where exvar=="" and then 
	places "Jr." in exvar where the word was removed

	lengths of variables is handled automatically.
*/