tex.el, at line 6315, contains the code ;; delsel.el, `delete-selection-mode' (put 'TeX-newline 'delete-selection t) (put 'TeX-insert-quote 'delete-selection t) (put 'TeX-insert-backslash 'delete-selection t) Should this also include a line for 'TeX-insert-dollar? The problem I'm seeing is that if I'm in TeX (or LaTeX) mode, running with delete-selection-mode t, and type a $ when a region is selected, the selected region is not killed. Roger Lipsett