Logical OR

I searched the archives, but could not find a previous topic about OR to
satisify my question.  (then again it's difficult to search for | or OR)


Given the following:


:0 B
* ^.*charset=.*"(GB2312|big5|windows-1251|ISO-2022-JP)"
/dev/null



Does anyone know what | expands out to?  At what point, regardless of the
rule, does | stop evaluating the condition?  Does it stop after
whitespace, EOLN, after an ending " or )    ???


Would it be better to group each charset individually
                (GB23212|big5|(windows-1251)|(ISO-2022-JP))
or leave the statement as is?




 Thanks
 Birl



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