Posts from 2026

This was a nice find yesterday: I think I came across it when someone I follow on Mastodon boosted a post from the account related to the site; it's a site called powRSS. The concept is pretty simple: collect links to all sorts of small blogs on all sorts of topics, and then provide a honking great discovery feed/pool. You can read more about the idea on their about page.

For sure, this sort of thing isn't exactly novel: those of us of a certain age will fondly remember the fun of webrings and other similar initiatives, not to mention feed aggregation sites where you could discover trending blogs or see what your friends were reading, and all that. But, to some degree, that fell out of favour and/or the limelight when social media got really popular.

So with this in mind it's good to see people still providing such sites. I've added this blog to it and I'll be diving in there now and again to see if there's anything new I should be following.

It'll be fun to populate OldNews with more things to read.

Three months back I released obs2nlm, a tool that takes an Obsidian vault and turns it into a single Markdown file so it can be used as a source for NotebookLM.

Since then I've been using it a lot and it's working out really well.

Meanwhile, one of my vaults has started to creep up towards the documented word limit for a single source in NotebookLM (500,000 words). Right now it's sitting at around 75% and is steadily creeping up.

So, with this in mind, I've made a change I've been planning from the start and have added a --split option. If used, if the generated file looks like it's going to hit the word limit, a second (or more) file will be created. The naming scheme is simple enough: if you ask obs2nlm to create an output file called dirt.md and it needs to run over, it'll then create dirt-2.md, dirt-3.md, and so on. The idea then is that, rather than upload that single Markdown file as a source, you upload all of the generated Markdown files.

Given you get up to 50 sources per notebook, this should see me right for any reasonable vault. As for if it will affect the quality of the results I get when I query the notebook... that's hard to say until I find myself in that situation. If Google are to be believed it shouldn't be an issue, and the alternative is to fall foul of the limit so this seems like the only sensible solution.

I've also added a --dry-run command line switch too; this should be handy for checking how big a vault is when compared to the word limit, without actually generating any files.

Since kicking off building BlogMore and swapping this blog over to using it I've been playing with the Google Search Console. It's something I've not used in decades, but felt it was time to dip back in again and understand how it works these days.

There are two motivations for this: the first is that, when it comes to my day job, I have cause to interact with people who do use the search console a lot, and so it's worth understanding what they work with and why it matters to them. The second reason is it's a reasonable measure of how good a site BlogMore generates.

So far the results have been pretty good, and the console has helped me find oddities and things that need tidying up.

So this release of BlogMore includes a couple of changes that stem from looking at the latest updates in the console.

The first is that I've cleaned up how the sitemap.xml gets generated. I noticed that if I had any HTML inside my extras directory it was turning up in the sitemap; something I didn't intend and didn't want. So that's now fixed: only pages generated by BlogMore will appear in sitemap.xml¹.

The second is that the stats page, despite being in the sitemap, had a noindex header for some reason. That's now been fixed. The only generated page I've intentionally set up so that it isn't indexed is the search page.

Finally, there's one change unrelated to the above: I realised that if you have with_read_time set to false, the reading time stats still appeared on the stats page; that seems unnecessary and unwanted on a site that doesn't show reading times. So, as of v2.12.0, that section of the stats won't show if reading times are turned off.

After adding the streak display to the stats a couple of days back, I got a little more obsessed with knowing what sort of runs of days of posting to the blog I had. I even said in that post:

It almost makes me want to do a whole-blog-lifetime version of it, or perhaps some sort of more calendar-oriented version of the archive.

Despite saying that I fancied the idea of that calendar-type view, first off I got to thinking it would be interesting to see a table of my 10 longest streaks. So that got added and can now be found in the stats page.

Having added that, I kept thinking about the whole-blog visual view of "here's the whole time of the blog, and here are the days you posted". I did think it might be interesting to use the same style and layout as the streak display -- perhaps something that would look like my whole contribution history on GitHub that I wrote about back in 2023 -- but the problem with that is it's tricky to make it work well on all display types. I needed something that would collapse better on smaller displays.

So I decided that a more conventional calendar display might work better. While it took a bit of work to get it to really land as I wanted, it turned out pretty much how I wanted.

So now there is a with_calendar configuration option that, if set to true, will add a calendar link at the top of the site. By default it looks like this:

If it looks a little unconventional at first glance, that's because it is. I wanted something that started with the most recent month in which there's a post, and which then worked backwards. This way I can see things as a proper history. But I can also see that this might seem odd to some people. Given this, I've also added a forward_calendar configuration option that can be used (when set to true), to flip the calendar into a more normal flow.

As you might expect, the calendar links to other parts of the site: clicking on a day with a post takes you to the archive for that day, clicking on a month name where there are posts in a month takes you to the archive for that month, and the same again for a year title.

I'm pretty pleased with the result. In testing it seems nicely responsive to different display types and I'm also finding it to be yet another interesting way to discover older posts (and get a sense of when I was encouraged to post going back over the last 11 years of this particular blog¹).

One final little feature I've added is a small enhancement to the read time that can appear on each post. While it's long since been possible to decide if you want it there or not, the calculation itself has been hard-wired to the assumption that 200 wpm is the reading speed of the reader. I've now added read_time_wpm as a configuration option so you can set it to suit your own taste.

I wondered yesterday:

...those question headers are displaying differently, with the background colour no longer spanning the width of the window. I'd like to understand why.

Turns out it was pretty straightforward:

diff --git a/quiz.el b/quiz.el
index 2dbe45d..c1ba255 100644
--- a/quiz.el
+++ b/quiz.el
@@ -40,7 +40,8 @@
 (defface quiz-question-number-face
   '((t :height 1.3
        :background "black"
-       :foreground "white"))
+       :foreground "white"
+       :extend t))
   "Face for the question number."
   :group 'quiz)

and so v1.7 has happened.

It looks like, perhaps, at some point in the past, :extend was t by default, but it no longer is? Either way, explicitly setting it to t has done the trick.

Today's Emacs Lisp package tidy-up is of a package I first wrote a couple of employers ago. While working on code I often found myself viewing FASTA files in an Emacs buffer and so I thought it would be fun to use this as a reason to knock up a simple mode for highlighting them.

fasta.el was the result.

While I doubt it was or is of much use to others, it helped me better understand simple font-locking in Emacs Lisp, and also made some buffers look a little less boring when I was messing with test data.

As for this update: it's the usual stuff of cleaning up deprecated uses of setf, mostly.

If bioinformatics-related Emacs Lisp code written by a non-bioinformatician is your thing, you might also find 2bit.el of interest too. Much like fasta.el it too probably doesn't have a practical use, but it sure was fun to write and taught me a few things along the way; it also sort of goes hand-in-hand with fasta.el too.

I've released an update to BlogMore, with another little straightforward addition. This time I'm revisiting the statistics page and adding a streak tracker, of sorts.

Modelled after the GitHub contribution tracker, or indeed any number of other streak trackers, it shows which days in the recent past I've blogged on, and also an indication of how many posts I've made that day.

Of course, it's not quite a full streak tracker. It's only going to show the days up to the day the site was last generated; so when a reader visits and looks, if you've not generated the site for a month, it's not going to show that you've not blogged for a month¹. The point is that if you last blog in January, come March or so the reader isn't going to see 2 months of empty days, until you regenerate the site.

So, not perfect, but good enough I think. Also it gives the reader another method of discovering posts (each cell will take them to the archive for that day, so they can read the post or posts for that day).

I've also tried to make it vaguely responsive. There are narrower date ranges as the display gets narrower. We start out at 10 months (as you can see above), then drop to 9 months:

and then dropping to 5 months once we get to mobile-type screens:

For all its flaws, I feel it's kind of fun and I like it as a new discovery tool. It almost makes me want to do a whole-blog-lifetime version of it, or perhaps some sort of more calendar-oriented version of the archive. For now though I'm going to settle with this and see if it encourages me to keep up a blogging streak.

While it isn't my intention to write posts for the sake of it, I am enjoying writing something more frequently, so this might just help keep me doing that.

A quick little refresh of one of my old packages, this time quiz.el. This is a nice little distraction when you're working in Emacs, letting you spin up a quick trivia quiz in a buffer.

It's backed by the Open Trivia Database, so there's a good few subjects, questions, and levels of difficulty to play with.

The only changes I've made to it in this release are the usual clean-ups of the deprecated uses of setf, plus I've added q as a binding to the quiz window to quickly quit the quiz.

I might have to come back and revisit it soon, as it looks like the default face choices could probably do with a rethink, and I can see at the moment that the attempt at a window-wide "header" for each question isn't working any longer. For comparison, here's how the package looked when running back when I first wrote it back in 2017:

Leaving aside the fact that I was still running a very light Emacs then, those question headers are displaying differently, with the background colour no longer spanning the width of the window. I'd like to understand why.

While I have been doing a lot of hacking on blogmore.el, I haven't forgotten my plan to revisit and refresh some of my older personal packages. This evening I've paid some attention to expando.el.

This started life a long time ago, as part of my grab-bag of handy functions that got carried around and copied from machine to machine, until I did a big tidy-up of everything back in 2017 and turned various things into packages that I managed via a self-hosted (well, GitHub pages hosted) package index.

It's a pretty simple but very useful bit of code that lets me quickly macroexpand a sexp at point and pretty print it into a display window. I've often found it indispensable when it came to writing my own macros.

This release simply adds a lexical-binding header to the file, and also adds a q key binding to the resulting view window so that it can be quickly and easily closed.

Also, as with all my other personal packages, I've swapped away from using Delpa to simply using :vc to pull it in.

(use-package expando
  :vc (:url "https://github.com/davep/expando.el" :rev :newest)
  :bind
  ("C-c e" . expando-macro))

Or perhaps I should say...

(progn
  (use-package-vc-install
   '(expando (:url "https://github.com/davep/expando.el") nil) nil)
  (defvar use-package--warning69
    #'(lambda (keyword err)
        (let
            ((msg
              (format "%s/%s: %s" 'expando keyword
                      (error-message-string err))))
          (display-warning 'use-package msg :error))))
  (condition-case err
      (progn
        (if (fboundp 'expando-macro) nil
          (autoload #'expando-macro "expando" nil t))
        (let*
            ((name "C-c e") (key [3 101])
             (kmap
              (or (if (and nil (symbolp nil)) (symbol-value nil) nil)
                  global-map))
             (kdesc
              (cons (if (stringp name) name (key-description name))
                    (if (symbolp nil) nil 'nil)))
             (binding (lookup-key kmap key)))
          (require 'bind-key)
          (let
              ((entry (assoc kdesc personal-keybindings))
               (details
                (list #'expando-macro (if (numberp binding) nil binding))))
            (if entry (setcdr entry details)
              (add-to-list 'personal-keybindings (cons kdesc details))))
          (define-key kmap key #'expando-macro)))
    ((debug error) (funcall use-package--warning69 :catch err))))

Despite having bumped it from 2.x to 3.x yesterday, I'm calling v4.0 on blogmore.el today. There's a good reason for this though. While tinkering with some of the configuration yesterday, and also answering a configuration question last night, I realised that it made sense to make some of the internals into public utility functions.

Now, sure, Emacs Lisp doesn't really have internals in the private function sense, but I've always liked the approach that a package-- prefix communicates "internal, might go away" vs package- which tells me "this is a stable part of the API of this package". With this in mind I've always tried to write my code using this convention. I did this with blogmore.el too and a lot of the code had the blogmore-- prefix.

There's plenty of code in there that someone might want to make use of, if they wanted to add their own commands, or do fun things with the configuration. So with this in mind I've "promoted" a bunch of code to being "public" and, in that case, I feel this deserves another major version bump¹.

Things that are now part of the "public" interface include:

• blogmore-clean-time-string
• blogmore-get-frontmatter
• blogmore-remove-frontmatter
• blogmore-set-frontmatter
• blogmore-slug
• blogmore-toggle-frontmatter
• blogmore-with-post

Each one is documented via its docstring (just a quick Ctrl+h f function-name RET away) and hopefully is pretty self-explanatory.

blogmore-with-post is especially handy as it provides a quick and easy way of pulling information from a post file. So something like this:

(blogmore-with-post "~/write/davep.github.com/content/posts/2026/04/2026-04-05-blogmore-el-v3-1.md"
  (list
   (blogmore-get-frontmatter "title")
   (blogmore-get-frontmatter "date")))

resulting in:

("blogmore.el v3.1" "2026-04-05 20:04:44+0100")

Meaning that this snippet from yesterday's post:

(with-temp-buffer
  (insert-file-contents-literally file)
  (parse-iso8601-time-string
   (blogmore--clean-time-string (blogmore--get-frontmatter-property "date"))))

becomes:

(blogmore-with-post file
  (parse-iso8601-time-string
   (blogmore-clean-time-string (blogmore-get-frontmatter "date"))))

Not massively different, but it reads better and now all the calls are to the "public API" of the package.

Not all the changes are "promoted internals". I've also added a blogmore-remove-tag command (and also added it to the transient menu).

I've also changed the way that blogmore-add-tag works so that, now, if it's called from the transient, it immediately goes back to the tag input prompt, allowing for another tag to be immediately selected (you can quit out of this with Ctrl+g). Removal of a tag works in a similar way, making things a lot quicker.

I've also added some extra tests too, which makes it even easier for me to make future changes with confidence. The more I work with it the more I appreciate that ERT is available.