This Statement Is False

It's been a very long time since my last post but we haven't been idle.  We've been working on Leisure, which grew out of Lazp.  Leisure has become a collaborative, dynamic, polyglot, computing environment, but more about that in future posts.  If you're curious about Leisure, you can find the repository here , although we haven't formally announced it, yet.  It's functional but buggy. For now, here's a short note about how Leisure manages collaborative data manipulation.  Leisure's collaborative documents contain a combination of content, code, and data, all represented by org-format markup in plain text.  Data in Leisure documents resides in markup-delimited regions of text, such as org-mode source blocks containing yaml data and code in a Leisure document can change that data.  This means that, beyond just normal collaboration, Leisure requires an exclusion mechanism so that data can stay consistent when several users access and change it. Curre...

While working on Leisure , I searched for tools to traverse text in DOM trees, but most of the ones I found were fairly limited.  One nice one is Rangy ( https://github.com/timdown/rangy ), which has a TextRange that can traverse by characters and words with rules for skipping over invisible text, collapsing contiguous whitespace, etc. Leisure, however is what you might call an “ultra-rich text” environment and needs more power.   This isn't my announcement of Leisure, by the way -- it's got a bit farther to go for that -- so consider this a teaser :). Leisure documents are orgmode files and the environment has a couple ways to present them, some of which sprinkle controls and views in among the editable text. During the design, I decided to use the contenteditable attribute and use the text in among the sprinkled controls and views as the actual document text, as opposed to emulating document editing, like code mirror does . Over the years, I experimented with different ...