--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.cms/lib/codemirror/mode/verilog/verilog.js	Fri Oct 11 22:40:23 2024 +0000
@@ -0,0 +1,781 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/5/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
+
+CodeMirror.defineMode("verilog", function(config, parserConfig) {
+
+  var indentUnit = config.indentUnit,
+      statementIndentUnit = parserConfig.statementIndentUnit || indentUnit,
+      dontAlignCalls = parserConfig.dontAlignCalls,
+      // compilerDirectivesUseRegularIndentation - If set, Compiler directive
+      // indentation follows the same rules as everything else. Otherwise if
+      // false, compiler directives will track their own indentation.
+      // For example, `ifdef nested inside another `ifndef will be indented,
+      // but a `ifdef inside a function block may not be indented.
+      compilerDirectivesUseRegularIndentation = parserConfig.compilerDirectivesUseRegularIndentation,
+      noIndentKeywords = parserConfig.noIndentKeywords || [],
+      multiLineStrings = parserConfig.multiLineStrings,
+      hooks = parserConfig.hooks || {};
+
+  function words(str) {
+    var obj = {}, words = str.split(" ");
+    for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
+    return obj;
+  }
+
+  /**
+   * Keywords from IEEE 1800-2012
+   */
+  var keywords = words(
+    "accept_on alias always always_comb always_ff always_latch and assert assign assume automatic before begin bind " +
+    "bins binsof bit break buf bufif0 bufif1 byte case casex casez cell chandle checker class clocking cmos config " +
+    "const constraint context continue cover covergroup coverpoint cross deassign default defparam design disable " +
+    "dist do edge else end endcase endchecker endclass endclocking endconfig endfunction endgenerate endgroup " +
+    "endinterface endmodule endpackage endprimitive endprogram endproperty endspecify endsequence endtable endtask " +
+    "enum event eventually expect export extends extern final first_match for force foreach forever fork forkjoin " +
+    "function generate genvar global highz0 highz1 if iff ifnone ignore_bins illegal_bins implements implies import " +
+    "incdir include initial inout input inside instance int integer interconnect interface intersect join join_any " +
+    "join_none large let liblist library local localparam logic longint macromodule matches medium modport module " +
+    "nand negedge nettype new nexttime nmos nor noshowcancelled not notif0 notif1 null or output package packed " +
+    "parameter pmos posedge primitive priority program property protected pull0 pull1 pulldown pullup " +
+    "pulsestyle_ondetect pulsestyle_onevent pure rand randc randcase randsequence rcmos real realtime ref reg " +
+    "reject_on release repeat restrict return rnmos rpmos rtran rtranif0 rtranif1 s_always s_eventually s_nexttime " +
+    "s_until s_until_with scalared sequence shortint shortreal showcancelled signed small soft solve specify " +
+    "specparam static string strong strong0 strong1 struct super supply0 supply1 sync_accept_on sync_reject_on " +
+    "table tagged task this throughout time timeprecision timeunit tran tranif0 tranif1 tri tri0 tri1 triand trior " +
+    "trireg type typedef union unique unique0 unsigned until until_with untyped use uwire var vectored virtual void " +
+    "wait wait_order wand weak weak0 weak1 while wildcard wire with within wor xnor xor");
+
+  /** Operators from IEEE 1800-2012
+     unary_operator ::=
+       + | - | ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~
+     binary_operator ::=
+       + | - | * | / | % | == | != | === | !== | ==? | !=? | && | || | **
+       | < | <= | > | >= | & | | | ^ | ^~ | ~^ | >> | << | >>> | <<<
+       | -> | <->
+     inc_or_dec_operator ::= ++ | --
+     unary_module_path_operator ::=
+       ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~
+     binary_module_path_operator ::=
+       == | != | && | || | & | | | ^ | ^~ | ~^
+  */
+  var isOperatorChar = /[\+\-\*\/!~&|^%=?:<>]/;
+  var isBracketChar = /[\[\]{}()]/;
+
+  var unsignedNumber = /\d[0-9_]*/;
+  var decimalLiteral = /\d*\s*'s?d\s*\d[0-9_]*/i;
+  var binaryLiteral = /\d*\s*'s?b\s*[xz01][xz01_]*/i;
+  var octLiteral = /\d*\s*'s?o\s*[xz0-7][xz0-7_]*/i;
+  var hexLiteral = /\d*\s*'s?h\s*[0-9a-fxz?][0-9a-fxz?_]*/i;
+  var realLiteral = /(\d[\d_]*(\.\d[\d_]*)?E-?[\d_]+)|(\d[\d_]*\.\d[\d_]*)/i;
+
+  var closingBracketOrWord = /^((`?\w+)|[)}\]])/;
+  var closingBracket = /[)}\]]/;
+  var compilerDirectiveRegex      = new RegExp(
+    "^(`(?:ifdef|ifndef|elsif|else|endif|undef|undefineall|define|include|begin_keywords|celldefine|default|" +
+    "nettype|end_keywords|endcelldefine|line|nounconnected_drive|pragma|resetall|timescale|unconnected_drive))\\b");
+  var compilerDirectiveBeginRegex = /^(`(?:ifdef|ifndef|elsif|else))\b/;
+  var compilerDirectiveEndRegex   = /^(`(?:elsif|else|endif))\b/;
+
+  var curPunc;
+  var curKeyword;
+
+  // Block openings which are closed by a matching keyword in the form of ("end" + keyword)
+  // E.g. "task" => "endtask"
+  var blockKeywords = words(
+    "case checker class clocking config function generate interface module package " +
+    "primitive program property specify sequence table task"
+  );
+
+  // Opening/closing pairs
+  var openClose = {};
+  for (var keyword in blockKeywords) {
+    openClose[keyword] = "end" + keyword;
+  }
+  openClose["begin"] = "end";
+  openClose["casex"] = "endcase";
+  openClose["casez"] = "endcase";
+  openClose["do"   ] = "while";
+  openClose["fork" ] = "join;join_any;join_none";
+  openClose["covergroup"] = "endgroup";
+  openClose["macro_begin"] = "macro_end";
+
+  for (var i in noIndentKeywords) {
+    var keyword = noIndentKeywords[i];
+    if (openClose[keyword]) {
+      openClose[keyword] = undefined;
+    }
+  }
+
+  // Keywords which open statements that are ended with a semi-colon
+  var statementKeywords = words("always always_comb always_ff always_latch assert assign assume else export for foreach forever if import initial repeat while extern typedef");
+
+  function tokenBase(stream, state) {
+    var ch = stream.peek(), style;
+    if (hooks[ch] && (style = hooks[ch](stream, state)) != false) return style;
+    if (hooks.tokenBase && (style = hooks.tokenBase(stream, state)) != false)
+      return style;
+
+    if (/[,;:\.]/.test(ch)) {
+      curPunc = stream.next();
+      return null;
+    }
+    if (isBracketChar.test(ch)) {
+      curPunc = stream.next();
+      return "bracket";
+    }
+    // Macros (tick-defines)
+    if (ch == '`') {
+      stream.next();
+      if (stream.eatWhile(/[\w\$_]/)) {
+        var cur = stream.current();
+        curKeyword = cur;
+        // Macros that end in _begin, are start of block and end with _end
+        if (cur.startsWith("`uvm_") && cur.endsWith("_begin")) {
+          var keywordClose = curKeyword.substr(0,curKeyword.length - 5) + "end";
+          openClose[cur] = keywordClose;
+          curPunc = "newblock";
+        } else {
+          stream.eatSpace();
+          if (stream.peek() == '(') {
+            // Check if this is a block
+            curPunc = "newmacro";
+          }
+          var withSpace = stream.current();
+          // Move the stream back before the spaces
+          stream.backUp(withSpace.length - cur.length);
+        }
+        return "def";
+      } else {
+        return null;
+      }
+    }
+    // System calls
+    if (ch == '$') {
+      stream.next();
+      if (stream.eatWhile(/[\w\$_]/)) {
+        return "meta";
+      } else {
+        return null;
+      }
+    }
+    // Time literals
+    if (ch == '#') {
+      stream.next();
+      stream.eatWhile(/[\d_.]/);
+      return "def";
+    }
+    // Event
+    if (ch == '@') {
+      stream.next();
+      stream.eatWhile(/[@]/);
+      return "def";
+    }
+    // Strings
+    if (ch == '"') {
+      stream.next();
+      state.tokenize = tokenString(ch);
+      return state.tokenize(stream, state);
+    }
+    // Comments
+    if (ch == "/") {
+      stream.next();
+      if (stream.eat("*")) {
+        state.tokenize = tokenComment;
+        return tokenComment(stream, state);
+      }
+      if (stream.eat("/")) {
+        stream.skipToEnd();
+        return "comment";
+      }
+      stream.backUp(1);
+    }
+
+    // Numeric literals
+    if (stream.match(realLiteral) ||
+        stream.match(decimalLiteral) ||
+        stream.match(binaryLiteral) ||
+        stream.match(octLiteral) ||
+        stream.match(hexLiteral) ||
+        stream.match(unsignedNumber) ||
+        stream.match(realLiteral)) {
+      return "number";
+    }
+
+    // Operators
+    if (stream.eatWhile(isOperatorChar)) {
+      curPunc = stream.current();
+      return "meta";
+    }
+
+    // Keywords / plain variables
+    if (stream.eatWhile(/[\w\$_]/)) {
+      var cur = stream.current();
+      if (keywords[cur]) {
+        if (openClose[cur]) {
+          curPunc = "newblock";
+          if (cur === "fork") {
+            // Fork can be a statement instead of block in cases of:
+            // "disable fork;" and "wait fork;" (trailing semicolon)
+            stream.eatSpace()
+            if (stream.peek() == ';') {
+              curPunc = "newstatement";
+            }
+            stream.backUp(stream.current().length - cur.length);
+          }
+        }
+        if (statementKeywords[cur]) {
+          curPunc = "newstatement";
+        }
+        curKeyword = cur;
+        return "keyword";
+      }
+      return "variable";
+    }
+
+    stream.next();
+    return null;
+  }
+
+  function tokenString(quote) {
+    return function(stream, state) {
+      var escaped = false, next, end = false;
+      while ((next = stream.next()) != null) {
+        if (next == quote && !escaped) {end = true; break;}
+        escaped = !escaped && next == "\\";
+      }
+      if (end || !(escaped || multiLineStrings))
+        state.tokenize = tokenBase;
+      return "string";
+    };
+  }
+
+  function tokenComment(stream, state) {
+    var maybeEnd = false, ch;
+    while (ch = stream.next()) {
+      if (ch == "/" && maybeEnd) {
+        state.tokenize = tokenBase;
+        break;
+      }
+      maybeEnd = (ch == "*");
+    }
+    return "comment";
+  }
+
+  function Context(indented, column, type, scopekind, align, prev) {
+    this.indented = indented;
+    this.column = column;
+    this.type = type;
+    this.scopekind = scopekind;
+    this.align = align;
+    this.prev = prev;
+  }
+  function pushContext(state, col, type, scopekind) {
+    var indent = state.indented;
+    var c = new Context(indent, col, type, scopekind ? scopekind : "", null, state.context);
+    return state.context = c;
+  }
+  function popContext(state) {
+    var t = state.context.type;
+    if (t == ")" || t == "]" || t == "}") {
+      state.indented = state.context.indented;
+    }
+    return state.context = state.context.prev;
+  }
+
+  function isClosing(text, contextClosing) {
+    if (text == contextClosing) {
+      return true;
+    } else {
+      // contextClosing may be multiple keywords separated by ;
+      var closingKeywords = contextClosing.split(";");
+      for (var i in closingKeywords) {
+        if (text == closingKeywords[i]) {
+          return true;
+        }
+      }
+      return false;
+    }
+  }
+
+  function isInsideScopeKind(ctx, scopekind) {
+    if (ctx == null) {
+      return false;
+    }
+    if (ctx.scopekind === scopekind) {
+      return true;
+    }
+    return isInsideScopeKind(ctx.prev, scopekind);
+  }
+
+  function buildElectricInputRegEx() {
+    // Reindentation should occur on any bracket char: {}()[]
+    // or on a match of any of the block closing keywords, at
+    // the end of a line
+    var allClosings = [];
+    for (var i in openClose) {
+      if (openClose[i]) {
+        var closings = openClose[i].split(";");
+        for (var j in closings) {
+          allClosings.push(closings[j]);
+        }
+      }
+    }
+    var re = new RegExp("[{}()\\[\\]]|(" + allClosings.join("|") + ")$");
+    return re;
+  }
+
+  // Interface
+  return {
+
+    // Regex to force current line to reindent
+    electricInput: buildElectricInputRegEx(),
+
+    startState: function(basecolumn) {
+      var state = {
+        tokenize: null,
+        context: new Context((basecolumn || 0) - indentUnit, 0, "top", "top", false),
+        indented: 0,
+        compilerDirectiveIndented: 0,
+        startOfLine: true
+      };
+      if (hooks.startState) hooks.startState(state);
+      return state;
+    },
+
+    token: function(stream, state) {
+      var ctx = state.context;
+      if (stream.sol()) {
+        if (ctx.align == null) ctx.align = false;
+        state.indented = stream.indentation();
+        state.startOfLine = true;
+      }
+      if (hooks.token) {
+        // Call hook, with an optional return value of a style to override verilog styling.
+        var style = hooks.token(stream, state);
+        if (style !== undefined) {
+          return style;
+        }
+      }
+      if (stream.eatSpace()) return null;
+      curPunc = null;
+      curKeyword = null;
+      var style = (state.tokenize || tokenBase)(stream, state);
+      if (style == "comment" || style == "meta" || style == "variable") {
+        if (((curPunc === "=") || (curPunc === "<=")) && !isInsideScopeKind(ctx, "assignment")) {
+          // '<=' could be nonblocking assignment or lessthan-equals (which shouldn't cause indent)
+          //      Search through the context to see if we are already in an assignment.
+          // '=' could be inside port declaration with comma or ')' afterward, or inside for(;;) block.
+          pushContext(state, stream.column() + curPunc.length, "assignment", "assignment");
+          if (ctx.align == null) ctx.align = true;
+        }
+        return style;
+      }
+      if (ctx.align == null) ctx.align = true;
+
+      var isClosingAssignment = ctx.type == "assignment" &&
+        closingBracket.test(curPunc) && ctx.prev && ctx.prev.type === curPunc;
+      if (curPunc == ctx.type || isClosingAssignment) {
+        if (isClosingAssignment) {
+          ctx = popContext(state);
+        }
+        ctx = popContext(state);
+        if (curPunc == ")") {
+          // Handle closing macros, assuming they could have a semicolon or begin/end block inside.
+          if (ctx && (ctx.type === "macro")) {
+            ctx = popContext(state);
+            while (ctx && (ctx.type == "statement" || ctx.type == "assignment")) ctx = popContext(state);
+          }
+        } else if (curPunc == "}") {
+          // Handle closing statements like constraint block: "foreach () {}" which
+          // do not have semicolon at end.
+          if (ctx && (ctx.type === "statement")) {
+            while (ctx && (ctx.type == "statement")) ctx = popContext(state);
+          }
+        }
+      } else if (((curPunc == ";" || curPunc == ",") && (ctx.type == "statement" || ctx.type == "assignment")) ||
+               (ctx.type && isClosing(curKeyword, ctx.type))) {
+        ctx = popContext(state);
+        while (ctx && (ctx.type == "statement" || ctx.type == "assignment")) ctx = popContext(state);
+      } else if (curPunc == "{") {
+        pushContext(state, stream.column(), "}");
+      } else if (curPunc == "[") {
+        pushContext(state, stream.column(), "]");
+      } else if (curPunc == "(") {
+        pushContext(state, stream.column(), ")");
+      } else if (ctx && ctx.type == "endcase" && curPunc == ":") {
+        pushContext(state, stream.column(), "statement", "case");
+      } else if (curPunc == "newstatement") {
+        pushContext(state, stream.column(), "statement", curKeyword);
+      } else if (curPunc == "newblock") {
+        if (curKeyword == "function" && ctx && (ctx.type == "statement" || ctx.type == "endgroup")) {
+          // The 'function' keyword can appear in some other contexts where it actually does not
+          // indicate a function (import/export DPI and covergroup definitions).
+          // Do nothing in this case
+        } else if (curKeyword == "task" && ctx && ctx.type == "statement") {
+          // Same thing for task
+        } else if (curKeyword == "class" && ctx && ctx.type == "statement") {
+          // Same thing for class (e.g. typedef)
+        } else {
+          var close = openClose[curKeyword];
+          pushContext(state, stream.column(), close, curKeyword);
+        }
+      } else if (curPunc == "newmacro" || (curKeyword && curKeyword.match(compilerDirectiveRegex))) {
+        if (curPunc == "newmacro") {
+          // Macros (especially if they have parenthesis) potentially have a semicolon
+          // or complete statement/block inside, and should be treated as such.
+          pushContext(state, stream.column(), "macro", "macro");
+        }
+        if (curKeyword.match(compilerDirectiveEndRegex)) {
+          state.compilerDirectiveIndented -= statementIndentUnit;
+        }
+        if (curKeyword.match(compilerDirectiveBeginRegex)) {
+          state.compilerDirectiveIndented += statementIndentUnit;
+        }
+      }
+
+      state.startOfLine = false;
+      return style;
+    },
+
+    indent: function(state, textAfter) {
+      if (state.tokenize != tokenBase && state.tokenize != null) return CodeMirror.Pass;
+      if (hooks.indent) {
+        var fromHook = hooks.indent(state);
+        if (fromHook >= 0) return fromHook;
+      }
+      var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
+      if (ctx.type == "statement" && firstChar == "}") ctx = ctx.prev;
+      var closing = false;
+      var possibleClosing = textAfter.match(closingBracketOrWord);
+      if (possibleClosing)
+        closing = isClosing(possibleClosing[0], ctx.type);
+      if (!compilerDirectivesUseRegularIndentation && textAfter.match(compilerDirectiveRegex)) {
+        if (textAfter.match(compilerDirectiveEndRegex)) {
+          return state.compilerDirectiveIndented - statementIndentUnit;
+        }
+        return state.compilerDirectiveIndented;
+      }
+      if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : statementIndentUnit);
+      else if ((closingBracket.test(ctx.type) || ctx.type == "assignment")
+        && ctx.align && !dontAlignCalls) return ctx.column + (closing ? 0 : 1);
+      else if (ctx.type == ")" && !closing) return ctx.indented + statementIndentUnit;
+      else return ctx.indented + (closing ? 0 : indentUnit);
+    },
+
+    blockCommentStart: "/*",
+    blockCommentEnd: "*/",
+    lineComment: "//",
+    fold: "indent"
+  };
+});
+
+  CodeMirror.defineMIME("text/x-verilog", {
+    name: "verilog"
+  });
+
+  CodeMirror.defineMIME("text/x-systemverilog", {
+    name: "verilog"
+  });
+
+
+
+  // TL-Verilog mode.
+  // See tl-x.org for language spec.
+  // See the mode in action at makerchip.com.
+  // Contact: steve.hoover@redwoodeda.com
+
+  // TLV Identifier prefixes.
+  // Note that sign is not treated separately, so "+/-" versions of numeric identifiers
+  // are included.
+  var tlvIdentifierStyle = {
+    "|": "link",
+    ">": "property",  // Should condition this off for > TLV 1c.
+    "$": "variable",
+    "$$": "variable",
+    "?$": "qualifier",
+    "?*": "qualifier",
+    "-": "hr",
+    "/": "property",
+    "/-": "property",
+    "@": "variable-3",
+    "@-": "variable-3",
+    "@++": "variable-3",
+    "@+=": "variable-3",
+    "@+=-": "variable-3",
+    "@--": "variable-3",
+    "@-=": "variable-3",
+    "%+": "tag",
+    "%-": "tag",
+    "%": "tag",
+    ">>": "tag",
+    "<<": "tag",
+    "<>": "tag",
+    "#": "tag",  // Need to choose a style for this.
+    "^": "attribute",
+    "^^": "attribute",
+    "^!": "attribute",
+    "*": "variable-2",
+    "**": "variable-2",
+    "\\": "keyword",
+    "\"": "comment"
+  };
+
+  // Lines starting with these characters define scope (result in indentation).
+  var tlvScopePrefixChars = {
+    "/": "beh-hier",
+    ">": "beh-hier",
+    "-": "phys-hier",
+    "|": "pipe",
+    "?": "when",
+    "@": "stage",
+    "\\": "keyword"
+  };
+  var tlvIndentUnit = 3;
+  var tlvTrackStatements = false;
+  var tlvIdentMatch = /^([~!@#\$%\^&\*-\+=\?\/\\\|'"<>]+)([\d\w_]*)/;  // Matches an identifier.
+  // Note that ':' is excluded, because of it's use in [:].
+  var tlvFirstLevelIndentMatch = /^[! ]  /;
+  var tlvLineIndentationMatch = /^[! ] */;
+  var tlvCommentMatch = /^\/[\/\*]/;
+
+
+  // Returns a style specific to the scope at the given indentation column.
+  // Type is one of: "indent", "scope-ident", "before-scope-ident".
+  function tlvScopeStyle(state, indentation, type) {
+    // Begin scope.
+    var depth = indentation / tlvIndentUnit;  // TODO: Pass this in instead.
+    return "tlv-" + state.tlvIndentationStyle[depth] + "-" + type;
+  }
+
+  // Return true if the next thing in the stream is an identifier with a mnemonic.
+  function tlvIdentNext(stream) {
+    var match;
+    return (match = stream.match(tlvIdentMatch, false)) && match[2].length > 0;
+  }
+
+  CodeMirror.defineMIME("text/x-tlv", {
+    name: "verilog",
+
+    hooks: {
+
+      electricInput: false,
+
+
+      // Return undefined for verilog tokenizing, or style for TLV token (null not used).
+      // Standard CM styles are used for most formatting, but some TL-Verilog-specific highlighting
+      // can be enabled with the definition of cm-tlv-* styles, including highlighting for:
+      //   - M4 tokens
+      //   - TLV scope indentation
+      //   - Statement delimitation (enabled by tlvTrackStatements)
+      token: function(stream, state) {
+        var style = undefined;
+        var match;  // Return value of pattern matches.
+
+        // Set highlighting mode based on code region (TLV or SV).
+        if (stream.sol() && ! state.tlvInBlockComment) {
+          // Process region.
+          if (stream.peek() == '\\') {
+            style = "def";
+            stream.skipToEnd();
+            if (stream.string.match(/\\SV/)) {
+              state.tlvCodeActive = false;
+            } else if (stream.string.match(/\\TLV/)){
+              state.tlvCodeActive = true;
+            }
+          }
+          // Correct indentation in the face of a line prefix char.
+          if (state.tlvCodeActive && stream.pos == 0 &&
+              (state.indented == 0) && (match = stream.match(tlvLineIndentationMatch, false))) {
+            state.indented = match[0].length;
+          }
+
+          // Compute indentation state:
+          //   o Auto indentation on next line
+          //   o Indentation scope styles
+          var indented = state.indented;
+          var depth = indented / tlvIndentUnit;
+          if (depth <= state.tlvIndentationStyle.length) {
+            // not deeper than current scope
+
+            var blankline = stream.string.length == indented;
+            var chPos = depth * tlvIndentUnit;
+            if (chPos < stream.string.length) {
+              var bodyString = stream.string.slice(chPos);
+              var ch = bodyString[0];
+              if (tlvScopePrefixChars[ch] && ((match = bodyString.match(tlvIdentMatch)) &&
+                  tlvIdentifierStyle[match[1]])) {
+                // This line begins scope.
+                // Next line gets indented one level.
+                indented += tlvIndentUnit;
+                // Style the next level of indentation (except non-region keyword identifiers,
+                //   which are statements themselves)
+                if (!(ch == "\\" && chPos > 0)) {
+                  state.tlvIndentationStyle[depth] = tlvScopePrefixChars[ch];
+                  if (tlvTrackStatements) {state.statementComment = false;}
+                  depth++;
+                }
+              }
+            }
+            // Clear out deeper indentation levels unless line is blank.
+            if (!blankline) {
+              while (state.tlvIndentationStyle.length > depth) {
+                state.tlvIndentationStyle.pop();
+              }
+            }
+          }
+          // Set next level of indentation.
+          state.tlvNextIndent = indented;
+        }
+
+        if (state.tlvCodeActive) {
+          // Highlight as TLV.
+
+          var beginStatement = false;
+          if (tlvTrackStatements) {
+            // This starts a statement if the position is at the scope level
+            // and we're not within a statement leading comment.
+            beginStatement =
+                   (stream.peek() != " ") &&   // not a space
+                   (style === undefined) &&    // not a region identifier
+                   !state.tlvInBlockComment && // not in block comment
+                   //!stream.match(tlvCommentMatch, false) && // not comment start
+                   (stream.column() == state.tlvIndentationStyle.length * tlvIndentUnit);  // at scope level
+            if (beginStatement) {
+              if (state.statementComment) {
+                // statement already started by comment
+                beginStatement = false;
+              }
+              state.statementComment =
+                   stream.match(tlvCommentMatch, false); // comment start
+            }
+          }
+
+          var match;
+          if (style !== undefined) {
+            // Region line.
+            style += " " + tlvScopeStyle(state, 0, "scope-ident")
+          } else if (((stream.pos / tlvIndentUnit) < state.tlvIndentationStyle.length) &&
+                     (match = stream.match(stream.sol() ? tlvFirstLevelIndentMatch : /^   /))) {
+            // Indentation
+            style = // make this style distinct from the previous one to prevent
+                    // codemirror from combining spans
+                    "tlv-indent-" + (((stream.pos % 2) == 0) ? "even" : "odd") +
+                    // and style it
+                    " " + tlvScopeStyle(state, stream.pos - tlvIndentUnit, "indent");
+            // Style the line prefix character.
+            if (match[0].charAt(0) == "!") {
+              style += " tlv-alert-line-prefix";
+            }
+            // Place a class before a scope identifier.
+            if (tlvIdentNext(stream)) {
+              style += " " + tlvScopeStyle(state, stream.pos, "before-scope-ident");
+            }
+          } else if (state.tlvInBlockComment) {
+            // In a block comment.
+            if (stream.match(/^.*?\*\//)) {
+              // Exit block comment.
+              state.tlvInBlockComment = false;
+              if (tlvTrackStatements && !stream.eol()) {
+                // Anything after comment is assumed to be real statement content.
+                state.statementComment = false;
+              }
+            } else {
+              stream.skipToEnd();
+            }
+            style = "comment";
+          } else if ((match = stream.match(tlvCommentMatch)) && !state.tlvInBlockComment) {
+            // Start comment.
+            if (match[0] == "//") {
+              // Line comment.
+              stream.skipToEnd();
+            } else {
+              // Block comment.
+              state.tlvInBlockComment = true;
+            }
+            style = "comment";
+          } else if (match = stream.match(tlvIdentMatch)) {
+            // looks like an identifier (or identifier prefix)
+            var prefix = match[1];
+            var mnemonic = match[2];
+            if (// is identifier prefix
+                tlvIdentifierStyle.hasOwnProperty(prefix) &&
+                // has mnemonic or we're at the end of the line (maybe it hasn't been typed yet)
+                (mnemonic.length > 0 || stream.eol())) {
+              style = tlvIdentifierStyle[prefix];
+              if (stream.column() == state.indented) {
+                // Begin scope.
+                style += " " + tlvScopeStyle(state, stream.column(), "scope-ident")
+              }
+            } else {
+              // Just swallow one character and try again.
+              // This enables subsequent identifier match with preceding symbol character, which
+              //   is legal within a statement.  (E.g., !$reset).  It also enables detection of
+              //   comment start with preceding symbols.
+              stream.backUp(stream.current().length - 1);
+              style = "tlv-default";
+            }
+          } else if (stream.match(/^\t+/)) {
+            // Highlight tabs, which are illegal.
+            style = "tlv-tab";
+          } else if (stream.match(/^[\[\]{}\(\);\:]+/)) {
+            // [:], (), {}, ;.
+            style = "meta";
+          } else if (match = stream.match(/^[mM]4([\+_])?[\w\d_]*/)) {
+            // m4 pre proc
+            style = (match[1] == "+") ? "tlv-m4-plus" : "tlv-m4";
+          } else if (stream.match(/^ +/)){
+            // Skip over spaces.
+            if (stream.eol()) {
+              // Trailing spaces.
+              style = "error";
+            } else {
+              // Non-trailing spaces.
+              style = "tlv-default";
+            }
+          } else if (stream.match(/^[\w\d_]+/)) {
+            // alpha-numeric token.
+            style = "number";
+          } else {
+            // Eat the next char w/ no formatting.
+            stream.next();
+            style = "tlv-default";
+          }
+          if (beginStatement) {
+            style += " tlv-statement";
+          }
+        } else {
+          if (stream.match(/^[mM]4([\w\d_]*)/)) {
+            // m4 pre proc
+            style = "tlv-m4";
+          }
+        }
+        return style;
+      },
+
+      indent: function(state) {
+        return (state.tlvCodeActive == true) ? state.tlvNextIndent : -1;
+      },
+
+      startState: function(state) {
+        state.tlvIndentationStyle = [];  // Styles to use for each level of indentation.
+        state.tlvCodeActive = true;  // True when we're in a TLV region (and at beginning of file).
+        state.tlvNextIndent = -1;    // The number of spaces to autoindent the next line if tlvCodeActive.
+        state.tlvInBlockComment = false;  // True inside /**/ comment.
+        if (tlvTrackStatements) {
+          state.statementComment = false;  // True inside a statement's header comment.
+        }
+      }
+
+    }
+  });
+});