As of maruku engine (the default), writing table like
surround text, etc.
| Tables        | Are           | Cool  |
| ------------- |:-------------:| -----:|
| col 3 is      | right-aligned | $1600 |
| col 2 is      | centered      |   $12 |
| zebra stripes | are neat      |    $1 |
surround text...
would render correctly.
But when I switch to redcarpet (add markdown: redcarpet into _config.yml), the table no longer rendered, both localhost and on GitHub Pages.
Did I do something wrong?
Adding only markdown: redcarpet into _config.yml is not enough, It's also need the extensions part, e.g.
markdown: redcarpet
redcarpet:
  extensions: ["no_intra_emphasis", "fenced_code_blocks", "autolink", "tables", "with_toc_data"]
    For this question, it seems the important extension here is "tables".
However if you want more Github flavored markdown, there are a few more listed at http://sholsinger.com/2014/03/jekyll-github-flavored-markdown.
Combining with neizod's answer I ended up using.
markdown: redcarpet
redcarpet:
  extensions: ["no_intra_emphasis", "fenced_code_blocks", "autolink", "tables", "strikethrough", "superscript", "with_toc_data"]
    The 'redcarpet' markdown engine is no longer supported by GitHub Pages and may cease working at any time. you can get some information from github help ,maybe you can find a solution in this issue.
来源:https://stackoverflow.com/questions/16099153/table-not-render-when-use-redcarpet-in-jekyll-github-pages