text: //
  // This code is a modified version of `markdown-it` code, MIT-licensed.
  //
  // Copyright (c) 2014 Vitaly Puzrin, Alex Kocharin.
  // 
  
  // lheading (---, ===)
  
  'use strict';
  
  
  module.exports = function lheading(state, startLine, endLine/*, silent*/) {
    var marker, pos, max, token, level,
        next = startLine + 1;
  
    if (next >= endLine) { return false; }
    if (state.tShift[next] < state.blkIndent) { return false; }
  
    // Scan next line
  
    if (state.tShift[next] - state.blkIndent > 3) { return false; }
  
    pos = state.bMarks[next] + state.tShift[next];
    max = state.eMarks[next];
  
    if (pos >= max) { return false; }
  
    marker = state.src.charCodeAt(pos);
  
    if (marker !== 0x2D/* - */ && marker !== 0x3D/* = */) { return false; }
  
    pos = state.skipChars(pos, marker);
  
    pos = state.skipSpaces(pos);
  
    if (pos < max) { return false; }
  
    pos = state.bMarks[startLine] + state.tShift[startLine];
  
    state.line = next + 1;
    level = (marker === 0x3D/* = */ ? 1 : 2);
  
    token          = state.push('heading_open', 'h' + String(level), 1);
    token.markup   = String.fromCharCode(marker);
    token.map      = [ startLine, state.line ];
    token.info     = state.src.slice(pos, state.eMarks[startLine]).trim();
  
    token          = state.push('inline', '', 0);
    token.content  = state.src.slice(pos, state.eMarks[startLine]).trim();
    token.map      = [ startLine, state.line - 1 ];
    token.children = [];
  
    token          = state.push('heading_close', 'h' + String(level), -1);
    token.markup   = String.fromCharCode(marker);
  
    return true;
  };
  