From 777f9d3fd8caf56e6bc6999a4b05379307d0733f Mon Sep 17 00:00:00 2001
From: Justin Gassner <justin.gassner@mailbox.org>
Date: Tue, 12 Sep 2023 07:36:33 +0200
Subject: Initial commit

---
 _plugins/singledollar.rb | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 _plugins/singledollar.rb

(limited to '_plugins/singledollar.rb')

diff --git a/_plugins/singledollar.rb b/_plugins/singledollar.rb
new file mode 100644
index 0000000..fe665ab
--- /dev/null
+++ b/_plugins/singledollar.rb
@@ -0,0 +1,19 @@
+# https://gist.github.com/sp301415/db9f7bee03bda483aa2ca7c0ca92fbfa
+
+require 'kramdown/parser/kramdown'
+require 'kramdown-parser-gfm'
+
+class Kramdown::Parser::GFMKatex < Kramdown::Parser::GFM
+    # Override inline math parser
+    @@parsers.delete(:inline_math)
+
+    INLINE_MATH_START = /(\$+)([^\$]+)(\$+)/m
+
+    def parse_inline_math
+        start_line_number = @src.current_line_number
+        @src.pos += @src.matched_size
+        @tree.children << Element.new(:math, @src.matched[1..-2], nil, category: :span, location: start_line_number)
+    end
+
+    define_parser(:inline_math, INLINE_MATH_START, '\$')
+end
-- 
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