John W. Krahn wrote: > Rob Dixon wrote: >> Jack Gates wrote: >>> s!(<|</)([^\!][A-Z0-9 ]+>)!$1\L$2\E!g; >>> or >>> s/(<|<\/)([^!][A-Z0-9 ]+>)/$1\L$2\E/g; >>> >>> The RE above captures and replaces all HTML tags with lowercase as >>> desired except for any tag that has only one letter such as <P>, >>> <B> or <I> >>> >>> It will get the </B>, </P> and </I> >>> >>> It properly ignores the <!DOCTYPE> tag >>> >>> What is the correct way to write the above RE? >> HTML tag names can't contain spaces, so you want >> >> s|(</?)([A-Z][A-Z0-9]*)|$1\L$2|g; > > Is there a difference between "\U</" and "\L</"?
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