Regexp in nnmail-split-methods (was Re: cleaning up a big regexp)

[torys.anderson@gmail.com (Tory S. Anderson)]

Okay; I've run into one more problem that is probabably (hopefully) a simple fix. Running the following code, I get a nice regexp in my "my-bulk-from" var. However, if I simply set that var as the criteria for "mail.bulk" splitting, all my split-methods break and all my mail ends up in my main inbox. If, on the other hand, I simply paste the value of that variable (rather than referencing the variable), it works as expected. I expect I'm missing a quote or something; more importantly, I'm missing some understanding. 

Why does `("mail.bulk" my-bulk-from)` fail but `("mail.bulk" "BIG REGEXP")` work, when the value of my-bulk-from is BIG REGEXP?



(setq my-gnus-bulk-from-address-list '("@maillist.codeproject.com"
				      "@papajohns-specials.com"
				      "@qomail.quikorder.com"
				      "@linkedin.com"
				      "@facebookmail.com"
				      "@plus.google.com"
				      "@twitter.com"
				      "@youtube.com"
				      "@linguistlist.org"
				      "@sportsauthority.com")) ;; list of bulkmail addresses
(setq my-bulk-from (concat "^From:.*" (regexp-opt my-gnus-bulk-from-address-list)))

(setq nnmail-split-methods
;       '(("mail.bulk" my-bulk-from) ;; breaks my split-methods
	 ("mail.bulk" "^From:.*\\(?:@\\(?:facebookmail\\.com\\|lin\\(?:guistlist\\.org\\|kedin\\.com\\)\\|\\(?:maillist\\.codeproject\\|p\\(?:apajohns-specials\\|lus\\.google\\)\\|qomail\\.quikorder\\|sportsauthority\\|twitter\\|youtube\\)\\.com\\)\\)")