Ok, I'm trying to lowercase a certain macro with a pcre rewrite rule. Unfortunately it doesnt seem to be observing pcre escape sequences.
subst('^(.+)$','\L$1\E',value('FROM') flags('store-matches') type('pcre')); (the FROM macro is created from the named match of an earlier pcre filter()
It ends up just putting a literal '\L' and '\E' at the start and end of the string. Is this a bug, or am I doing something wrong, or is there another way to do this?

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