Category Archives: Programming

Emacs has the ability to “narrow” a buffer to a region thereby making the parts of the buffer outside the region invisible. The invisible part of the buffer is completely inaccessible: you can’t move into it, you can’t change it, … Continue reading →

Zach Beane has a nice Common Lisp tip about applying and. The problem that the tip addresses is how to apply and to a list of values to test that they are all true. One might think that you could … Continue reading →

Yesterday, I wrote about generating a 10 × 10 multiplication table in Emacs Lisp. The solution I gave involved using the dolist macro with a list of the numbers 1–10 like this (dolist (r ‘(1 2 3 4 5 6 … Continue reading →

Xah Lee saw my post about Tim Visher’s video on building a multiplication table in Emacs and decided to experiment. Visher’s video was in the context of VimGolf where the goal was to build the table in the minimum number … Continue reading →

I was watching another of Tim Visher’s VimGolf videos in which he builds a multiplication table by the clever use of keyboard macros. What got my attention, however, was his use of the function eval-and-replace that evaluates the sexp preceding … Continue reading →

The other day, I wrote about Inserting Quotation Marks In Emacs Org Mode and I wrote a little bit of elisp to insert \ldquo{}\rdquo in the buffer and then place the point between the two quote commands. I remarked at … Continue reading →