From a3a1cc2b884bd3c9ec0ef9f9580af8526fcc61b5 Mon Sep 17 00:00:00 2001
From: jeffreytse <jeffreytse.mail@gmail.com>
Date: Fri, 3 Jul 2020 12:46:15 +0800
Subject: [PATCH] fix: math expression within pipline broken (#14)

---
 lib/jekyll-spaceship/cores/processor.rb            | 2 +-
 lib/jekyll-spaceship/processors/table-processor.rb | 9 ++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/lib/jekyll-spaceship/cores/processor.rb b/lib/jekyll-spaceship/cores/processor.rb
index 9dc7719..7e5dbaa 100644
--- a/lib/jekyll-spaceship/cores/processor.rb
+++ b/lib/jekyll-spaceship/cores/processor.rb
@@ -158,7 +158,7 @@ module Jekyll::Spaceship
         if type == :code
           regex = /((`+)\s*(\w*)((?:.|\n)*?)\2)/
         elsif type == :math
-          regex = /(?<=^|\n)[^\n\|]*(((?<!\\)\${1,2})[^\n]*\2)[^\n\|]*/
+          regex = /(((?<!\\)\${1,2})[^\n]*?\1)/
         end
         next if regex.nil?
         content.scan(regex) do |match_data|
diff --git a/lib/jekyll-spaceship/processors/table-processor.rb b/lib/jekyll-spaceship/processors/table-processor.rb
index 14b189d..f1b119b 100644
--- a/lib/jekyll-spaceship/processors/table-processor.rb
+++ b/lib/jekyll-spaceship/processors/table-processor.rb
@@ -8,7 +8,7 @@ module Jekyll::Spaceship
     def on_handle_markdown(content)
       # pre-handle reference-style links
       references = {}
-      content.scan(/(\[(.*)\]:\s*(.*))/) do |match_data|
+      content.scan(/\n\s*(\[(.*)\]:\s*(\S+(\s+".*?")?))/) do |match_data|
         ref_name = match_data[1]
         ref_value = match_data[2]
         references[ref_name] = ref_value
@@ -33,9 +33,12 @@ module Jekyll::Spaceship
 
       # escape * and _ and $ etc.
       content.scan(/[^\n]*(?<!\\)\|[^\n]*/) do |result|
+        # skip for math expression within pipeline
+        next unless result
+          .gsub(/((?<!\\)\${1,2})[^\n]*?\1/, '')
+          .match(/(?<!\\)\|/)
         replace = result.gsub(
-          /(?<!(?<!\\)\\)(\*|\$|\[|\(|\"|_)/,
-          '\\\\\\\\\1')
+          /(?<!(?<!\\)\\)(\*|\$|\[|\(|\"|_)/, '\\\\\\\\\1')
         next if result == replace
         content = content.gsub(result, replace)
       end