Emacs

Regex
newline: C-q C-j
 * http://xahlee.org/emacs/emacs_regex.html
 * http://www.gnu.org/software/emacs/manual/html_node/emacs/Regexp-Replace.html
 * http://www.gnu.org/software/emacs/manual/html_node/emacs/Regexp-Backslash.html
 * http://www.gnu.org/software/findutils/manual/html_node/find_html/emacs-regular-expression-syntax.html
 * http://jeremy.zawodny.com/blog/archives/008872.html

Find
(global-set-key [f3] 'grep-find) (setq grep-find-command "find . -path '*/.svn' -prune -o -type f -print | xargs -e grep -I -n -e ")
 * http://wordaligned.org/articles/ignoring-svn-directories