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  • 07:59 UTC (new) (history) 2021-12-04 Org timer once again . . . . mbork I’ve been writing about the Org timer about a month ago, and today I’m revisiting this topic because once I started using it, I discovered a cool feature which is, let’s say, half-documented.


  • 13:00 UTC (new) (history) 2021-11-29 Counting the number of columns in PostgreSQL . . . . mbork So I had this pretty big PostgreSQL table, and I wanted to know how many columns it had. Should be simple enough, right? Remember about using psql to show how some comands are converted to SQL? Well it didn’t really help me that much.


  • 09:14 UTC (new) (history) 2021-11-20 Tricks with GNU date . . . . mbork Date- and time-related computations are hard – we all know this. Sometimes the problem is that there are many edge cases, sometimes the issue is conceptually hard, and sometimes both. Recently, I had an instance of a problem which was conceptually hard (at least for my little brain).


  • 04:44 UTC (new) (history) 2021-11-13 y-or-n-p but with RET meaning yes . . . . mbork Today, I had an extremely specific need. I wanted the Elisp function y-or-n-p (which asks the user a yes-or-no question, expecting a one-key answer of y or n), but I wanted to interpret RET (or “Enter”) as “yes”. It turns out that by default it means “exit”, which is because y-or-n-p-map has no binding for RET, and y-or-n-p falls back on query-replace-map (in a rather convoluted way). So, here is one way I could change it:


  • 05:05 UTC (new) (history) 2021-11-06 The Emacs Lisp book is finished . . . . mbork So, it’s done! I am very proud to say that after about 10 months of work I finished writing my Emacs Lisp book. If you haven’t heard of it yet, it’s called “Hacking your way around in Emacs” and it is an intermediate-level textbook on Emacs Lisp, showing a lot of useful things on about 100 pages.