/*! markdown-it-abbr 2.0.0 https://github.com/markdown-it/markdown-it-abbr @license MIT */
(function(global, factory) {
  typeof exports === "object" && typeof module !== "undefined" ? module.exports = factory() : typeof define === "function" && define.amd ? define(factory) : (global = typeof globalThis !== "undefined" ? globalThis : global || self, 
  global.markdownitAbbr = factory());
})(this, (function() {
  "use strict";
  // Enclose abbreviations in <abbr> tags
  
    function abbr_plugin(md) {
    const escapeRE = md.utils.escapeRE;
    const arrayReplaceAt = md.utils.arrayReplaceAt;
    // ASCII characters in Cc, Sc, Sm, Sk categories we should terminate on;
    // you can check character classes here:
    // http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
        const OTHER_CHARS = " \r\n$+<=>^`|~";
    const UNICODE_PUNCT_RE = md.utils.lib.ucmicro.P.source;
    const UNICODE_SPACE_RE = md.utils.lib.ucmicro.Z.source;
    function abbr_def(state, startLine, endLine, silent) {
      let labelEnd;
      let pos = state.bMarks[startLine] + state.tShift[startLine];
      const max = state.eMarks[startLine];
      if (pos + 2 >= max) {
        return false;
      }
      if (state.src.charCodeAt(pos++) !== 42 /* * */) {
        return false;
      }
      if (state.src.charCodeAt(pos++) !== 91 /* [ */) {
        return false;
      }
      const labelStart = pos;
      for (;pos < max; pos++) {
        const ch = state.src.charCodeAt(pos);
        if (ch === 91 /* [ */) {
          return false;
        } else if (ch === 93 /* ] */) {
          labelEnd = pos;
          break;
        } else if (ch === 92 /* \ */) {
          pos++;
        }
      }
      if (labelEnd < 0 || state.src.charCodeAt(labelEnd + 1) !== 58 /* : */) {
        return false;
      }
      if (silent) {
        return true;
      }
      const label = state.src.slice(labelStart, labelEnd).replace(/\\(.)/g, "$1");
      const title = state.src.slice(labelEnd + 2, max).trim();
      if (label.length === 0) {
        return false;
      }
      if (title.length === 0) {
        return false;
      }
      if (!state.env.abbreviations) {
        state.env.abbreviations = {};
      }
      // prepend ':' to avoid conflict with Object.prototype members
            if (typeof state.env.abbreviations[":" + label] === "undefined") {
        state.env.abbreviations[":" + label] = title;
      }
      state.line = startLine + 1;
      return true;
    }
    function abbr_replace(state) {
      const blockTokens = state.tokens;
      if (!state.env.abbreviations) {
        return;
      }
      const regSimple = new RegExp("(?:" + Object.keys(state.env.abbreviations).map((function(x) {
        return x.substr(1);
      })).sort((function(a, b) {
        return b.length - a.length;
      })).map(escapeRE).join("|") + ")");
      const regText = "(^|" + UNICODE_PUNCT_RE + "|" + UNICODE_SPACE_RE + "|[" + OTHER_CHARS.split("").map(escapeRE).join("") + "])" + "(" + Object.keys(state.env.abbreviations).map((function(x) {
        return x.substr(1);
      })).sort((function(a, b) {
        return b.length - a.length;
      })).map(escapeRE).join("|") + ")" + "($|" + UNICODE_PUNCT_RE + "|" + UNICODE_SPACE_RE + "|[" + OTHER_CHARS.split("").map(escapeRE).join("") + "])";
      const reg = new RegExp(regText, "g");
      for (let j = 0, l = blockTokens.length; j < l; j++) {
        if (blockTokens[j].type !== "inline") {
          continue;
        }
        let tokens = blockTokens[j].children;
        // We scan from the end, to keep position when new tags added.
                for (let i = tokens.length - 1; i >= 0; i--) {
          const currentToken = tokens[i];
          if (currentToken.type !== "text") {
            continue;
          }
          let pos = 0;
          const text = currentToken.content;
          reg.lastIndex = 0;
          const nodes = [];
          // fast regexp run to determine whether there are any abbreviated words
          // in the current token
                    if (!regSimple.test(text)) {
            continue;
          }
          let m;
          while (m = reg.exec(text)) {
            if (m.index > 0 || m[1].length > 0) {
              const token = new state.Token("text", "", 0);
              token.content = text.slice(pos, m.index + m[1].length);
              nodes.push(token);
            }
            const token_o = new state.Token("abbr_open", "abbr", 1);
            token_o.attrs = [ [ "title", state.env.abbreviations[":" + m[2]] ] ];
            nodes.push(token_o);
            const token_t = new state.Token("text", "", 0);
            token_t.content = m[2];
            nodes.push(token_t);
            const token_c = new state.Token("abbr_close", "abbr", -1);
            nodes.push(token_c);
            reg.lastIndex -= m[3].length;
            pos = reg.lastIndex;
          }
          if (!nodes.length) {
            continue;
          }
          if (pos < text.length) {
            const token = new state.Token("text", "", 0);
            token.content = text.slice(pos);
            nodes.push(token);
          }
          // replace current node
                    blockTokens[j].children = tokens = arrayReplaceAt(tokens, i, nodes);
        }
      }
    }
    md.block.ruler.before("reference", "abbr_def", abbr_def, {
      alt: [ "paragraph", "reference" ]
    });
    md.core.ruler.after("linkify", "abbr_replace", abbr_replace);
  }
  return abbr_plugin;
}));