I'm trying to use replace-regexp-in-string (see function below) and I need to detect the boundary between a lower case and upper case character. Apparently let-binding case-fold-search to nil doesn't work? I'm trying this in the latest pretest
GNU Emacs 126.96.36.199 (x86_64-apple-darwin13.4.0, NS appkit-1265.21 Version 10.9.5 (Build 13F1603)) of 2016-05-17
as well as
GNU Emacs 24.5.1 (x86_64-apple-darwin13.4.0, NS apple-appkit-1265.21) of 2015-04-10 on builder10-9.porkrind.org
(obviously on a Mac)
(defun spread-upcase-filename (filename) "fooBar.h => F O O B A R . H" (let ((case-fold-search nil) (str (replace-regexp-in-string "\\([a-z0-9]\\)\\([A-Z]+\\)" "\\1\x01\\2" filename t))) (setq str (mapconcat 'identity (split-string str "" t) " ")) ;;(setq str (replace-regexp-in-string "\x01" "" str t)) (upcase str)))
From the documentation I've seen so far, case-fold-search is supposed to be dynamically-bound rather than lexically-bound, but it doesn't seem to have any effect.