+(use-package reftex
+ :hook (latex-mode . reftex-mode))
+
+(use-package reftex-cite
+ :after reftex
+ :disabled ; enable to disable
+ ; reftex-cite's default choice
+ ; of previous word
+ :config
+ (defun reftex-get-bibkey-default ()
+ "If the cursor is in a citation macro, return the word before the macro."
+ (let* ((macro (reftex-what-macro 1)))
+ (save-excursion
+ (when (and macro (string-match "cite" (car macro)))
+ (goto-char (cdr macro)))
+ (reftex-this-word)))))
+