st: match(s1,s2) function

["Lee Chuntao" <chtl@econ.hku.hk>]

Dear All,

    I want to evalute if S1 is a substring of S2, for example, "str" is a sbustring of "substring" . To my great disappointed, the match(s1,s2) only works as the "==" operator. Can anyone help me?

thanks in advance

Chuntao

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