Initial commit

1 files changed, 19 insertions, 0 deletions

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