add day 12 of devlog

1 files changed, 16 insertions, 0 deletions

diff --git a/posts/SDL2_devlog.md b/posts/SDL2_devlog.md
index d62e376..f3b019f 100644
--- a/posts/SDL2_devlog.md
+++ b/posts/SDL2_devlog.md
@@ -5,6 +5,22 @@ on the editor. The days are listed in reverse chronological
 order, begin from the bottom, if this is your first time on
 this page.
 
+### Day 12
+
+I lifted most of
+[murarth/ketos](https://github.com/murarth/ketos) into the
+editor. `ketos`'s implementation of `lisp` is too vast for
+my use case. For example, the editor does not need data
+types to handle raw strings or byte strings. I have got a
+basic evaluator running inside the SDL2 context (notice the
+`lisp` REPL at the bottom of the window). Over the
+following days, I intend to create a set of prelude
+functions to manipulate the pixmap. Users can implement
+their own brushes, dithering patterns, keybinds and more
+(hopefully).
+
+![Day 12](https://u.peppe.rs/y0.mp4)
+
 ### Day 11
 
 I intend to supplement the editor with scripting language