initial math, and other things

soupault.toml

@@ -127,16 +127,19 @@ widget = "insert_html"
 html = '<meta name="generator" content="soupault">'
 selector = "head"
 
-# <blink> elements are evil, delete them all
-[widgets.no-blink]
-widget = "delete_element"
-selector = "blink"
-
-# By default this widget deletes all elements matching the selector,
-# but you can set this option to false to delete just the first one
-delete_all = true
-
 [widgets.syntax]
 widget = "preprocess_element"
 selector = 'pre code'
 command = "./syntax_wrapper.sh ${ATTR_CLASS##*-}"
+
+[widgets.math-inline]
+widget = "preprocess_element"
+selector = "span.math.inline"
+command = "sed -E 's/^\\\\\\((.*)\\\\\\)$/\\1/' | katex --format mathml"
+action = "replace_element"
+
+[widgets.math-display]
+widget = "preprocess_element"
+selector = "span.math.display"
+command = "sed -E 's/^\\\\\\[(.*)\\\\\\]$/\\1/' | katex -d --fleqn --format mathml"
+action = "replace_element"