(defun custom-split-regexp-maybe (regexp)
"If REGEXP is a string, split it to a list at `\\|'.
You can get the original back from the result with:
- (mapconcat 'identity result \"\\|\")
+ (mapconcat \\='identity result \"\\|\")
IF REGEXP is not a string, return it unchanged."
(if (stringp regexp)
For example, the MH-E package updates this alist as follows:
- (add-to-list 'customize-package-emacs-version-alist
- '(MH-E (\"6.0\" . \"22.1\") (\"6.1\" . \"22.1\")
+ (add-to-list \\='customize-package-emacs-version-alist
+ \\='(MH-E (\"6.0\" . \"22.1\") (\"6.1\" . \"22.1\")
(\"7.0\" . \"22.1\") (\"7.1\" . \"22.1\")
(\"7.2\" . \"22.1\") (\"7.3\" . \"22.1\")
(\"7.4\" . \"22.1\") (\"8.0\" . \"22.1\")))