Module: MdxTex::ToMarkdown::Bold

Defined in:
lib/mdx_tex/to_markdown/bold.rb

Overview

Converts Textile bold syntax to Markdown bold syntax. Textile bold is text with non-whitespace immediately inside both asterisks; whitespace-padded asterisks are not bold (and are typically list markers).

| Input (Textile) | Output (Markdown) | |——————-|——————-| | hello | hello | | a and b | a and b | | * hello * | * hello * |

Constant Summary collapse

PATTERN =

Matches a Textile bold span: …

\*                opening literal *
(                 capture the content
  [^\s*]          first char must be non-whitespace and non-*
                  (Textile rule: no padding inside the asterisks;
                  also keeps us from matching list markers like `* item`)
  (?:             optional trailing run, present only for 2+ char content
    [^*]*?        any chars except *, non-greedy so we stop at the
                  nearest closing * rather than spanning into another span
    [^\s*]        last char must also be non-whitespace and non-*
  )?              optional, so single-char bold like *a* still matches
)
\*                closing literal *

/\*([^\s*](?:[^*]*?[^\s*])?)\*/.freeze

Class Method Summary collapse

Class Method Details

.execute(line) ⇒ Object 



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# File 'lib/mdx_tex/to_markdown/bold.rb', line 30

def self.execute(line)
  line.gsub(PATTERN, '**\1**')
end