Add Lua-style long brackets and long comments to CMake language

Teach the CMake language parser to recognize Lua-style "long bracket"
arguments.  These start with two '[' separated by zero or more '='
characters e.g. "[[" or "[=[" or "[==[".  They end with two ']'
separated by the same number of '=' as the opening bracket.  There is no
nesting of brackets of the same level (number of '=').  No escapes,
variable expansion, or other processing is performed on the content
between such brackets so they always represent exactly one argument.

Also teach CMake to parse and ignore "long comment" syntax.  A long
comment starts with "#" immediately followed by an opening long bracket.
It ends at the matching close long bracket.

Teach the RunCMake.Syntax test to cover long bracket and long comment
cases.

75 files changed, 629 insertions, 185 deletions

diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index f6ea4b1..7461d37 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -29,14 +29,14 @@ struct cmListFileParser
   ~cmListFileParser();
   bool ParseFile();
   bool ParseFunction(const char* name, long line);
-  void AddArgument(cmListFileLexer_Token* token,
+  bool AddArgument(cmListFileLexer_Token* token,
                    cmListFileArgument::Delimiter delim);
   cmListFile* ListFile;
   cmMakefile* Makefile;
   const char* FileName;
   cmListFileLexer* Lexer;
   cmListFileFunction Function;
-  enum { SeparationOkay, SeparationWarning } Separation;
+  enum { SeparationOkay, SeparationWarning, SeparationError} Separation;
 };
 
 //----------------------------------------------------------------------------
@@ -90,6 +90,10 @@ bool cmListFileParser::ParseFile()
       {
       haveNewline = true;
       }
+    else if(token->type == cmListFileLexer_Token_CommentBracket)
+      {
+      haveNewline = false;
+      }
     else if(token->type == cmListFileLexer_Token_Identifier)
       {
       if(haveNewline)
@@ -301,7 +305,10 @@ bool cmListFileParser::ParseFunction(const char* name, long line)
       {
       parenDepth++;
       this->Separation = SeparationOkay;
-      this->AddArgument(token, cmListFileArgument::Unquoted);
+      if(!this->AddArgument(token, cmListFileArgument::Unquoted))
+        {
+        return false;
+        }
       }
     else if(token->type == cmListFileLexer_Token_ParenRight)
       {
@@ -311,20 +318,41 @@ bool cmListFileParser::ParseFunction(const char* name, long line)
         }
       parenDepth--;
       this->Separation = SeparationOkay;
-      this->AddArgument(token, cmListFileArgument::Unquoted);
+      if(!this->AddArgument(token, cmListFileArgument::Unquoted))
+        {
+        return false;
+        }
       this->Separation = SeparationWarning;
       }
     else if(token->type == cmListFileLexer_Token_Identifier ||
             token->type == cmListFileLexer_Token_ArgumentUnquoted)
       {
-      this->AddArgument(token, cmListFileArgument::Unquoted);
+      if(!this->AddArgument(token, cmListFileArgument::Unquoted))
+        {
+        return false;
+        }
       this->Separation = SeparationWarning;
       }
     else if(token->type == cmListFileLexer_Token_ArgumentQuoted)
       {
-      this->AddArgument(token, cmListFileArgument::Quoted);
+      if(!this->AddArgument(token, cmListFileArgument::Quoted))
+        {
+        return false;
+        }
       this->Separation = SeparationWarning;
       }
+    else if(token->type == cmListFileLexer_Token_ArgumentBracket)
+      {
+      if(!this->AddArgument(token, cmListFileArgument::Bracket))
+        {
+        return false;
+        }
+      this->Separation = SeparationError;
+      }
+    else if(token->type == cmListFileLexer_Token_CommentBracket)
+      {
+      this->Separation = SeparationError;
+      }
     else
       {
       // Error.
@@ -351,42 +379,32 @@ bool cmListFileParser::ParseFunction(const char* name, long line)
 }
 
 //----------------------------------------------------------------------------
-void cmListFileParser::AddArgument(cmListFileLexer_Token* token,
+bool cmListFileParser::AddArgument(cmListFileLexer_Token* token,
                                    cmListFileArgument::Delimiter delim)
 {
   cmListFileArgument a(token->text, delim, this->FileName, token->line);
   this->Function.Arguments.push_back(a);
-  if(delim == cmListFileArgument::Unquoted)
-    {
-    // Warn about a future behavior change.
-    const char* c = a.Value.c_str();
-    if(*c++ == '[')
-      {
-      while(*c == '=')
-        { ++c; }
-      if(*c == '[')
-        {
-        cmOStringStream m;
-        m << "Syntax Warning in cmake code at\n"
-          << "  " << this->FileName << ":" << token->line << ":"
-          << token->column << "\n"
-          << "A future version of CMake may treat unquoted argument:\n"
-          << "  " << a.Value << "\n"
-          << "as an opening long bracket.  Double-quote the argument.";
-        this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, m.str().c_str());
-        }
-      }
-    }
   if(this->Separation == SeparationOkay)
     {
-    return;
+    return true;
     }
+  bool isError = (this->Separation == SeparationError ||
+                  delim == cmListFileArgument::Bracket);
   cmOStringStream m;
-  m << "Syntax Warning in cmake code at\n"
+  m << "Syntax " << (isError? "Error":"Warning") << " in cmake code at\n"
     << "  " << this->FileName << ":" << token->line << ":"
     << token->column << "\n"
     << "Argument not separated from preceding token by whitespace.";
-  this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, m.str().c_str());
+  if(isError)
+    {
+    this->Makefile->IssueMessage(cmake::FATAL_ERROR, m.str().c_str());
+    return false;
+    }
+  else
+    {
+    this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, m.str().c_str());
+    return true;
+    }
 }
 
 //----------------------------------------------------------------------------
diff --git a/Source/cmListFileCache.h b/Source/cmListFileCache.h
index 7bb3b34..bede25e 100644
--- a/Source/cmListFileCache.h
+++ b/Source/cmListFileCache.h
@@ -28,7 +28,8 @@ struct cmListFileArgument
   enum Delimiter
     {
     Unquoted,
-    Quoted
+    Quoted,
+    Bracket
     };
   cmListFileArgument(): Value(), Delim(Unquoted), FilePath(0), Line(0) {}
   cmListFileArgument(const cmListFileArgument& r):
diff --git a/Source/cmListFileLexer.c b/Source/cmListFileLexer.c
index cbd2b5d..3b08b03 100644
--- a/Source/cmListFileLexer.c
+++ b/Source/cmListFileLexer.c
@@ -369,8 +369,8 @@ static void yy_fatal_error (yyconst char msg[] ,yyscan_t yyscanner );
         *yy_cp = '\0'; \
         yyg->yy_c_buf_p = yy_cp;
 
-#define YY_NUM_RULES 16
-#define YY_END_OF_BUFFER 17
+#define YY_NUM_RULES 23
+#define YY_END_OF_BUFFER 24
 /* This struct is not used in this scanner,
    but its presence is necessary. */
 struct yy_trans_info
@@ -378,13 +378,16 @@ struct yy_trans_info
         flex_int32_t yy_verify;
         flex_int32_t yy_nxt;
         };
-static yyconst flex_int16_t yy_accept[45] =
+static yyconst flex_int16_t yy_accept[77] =
     {   0,
-        0,    0,    0,    0,   17,    6,   14,    1,    8,    2,
-        6,    3,    4,    5,   15,    9,   11,   12,   13,    6,
-        0,    6,    0,   14,    2,    0,    5,    6,    9,    0,
-       10,    0,    7,    0,    0,    0,    7,    0,    7,    0,
-        0,    0,    0,    0
+        0,    0,    0,    0,    0,    0,    0,    0,    4,    4,
+       24,   13,   21,    1,   15,    3,   13,    5,    6,    7,
+       22,   22,   16,   18,   19,   20,   10,   11,    8,   12,
+        9,    4,   13,    0,   13,    0,   21,    0,    0,    7,
+       13,    0,   13,    0,    2,    0,   13,   16,    0,   17,
+       10,    8,    4,    0,   14,    0,    0,    0,    0,   14,
+        0,    0,   14,    0,    0,    0,    2,   14,    0,    0,
+        0,    0,    0,    0,    0,    0
     } ;
 
 static yyconst flex_int32_t yy_ec[256] =
@@ -395,14 +398,14 @@ static yyconst flex_int32_t yy_ec[256] =
         1,    2,    1,    5,    6,    7,    1,    1,    1,    8,
         9,    1,    1,    1,    1,    1,    1,   10,   10,   10,
        10,   10,   10,   10,   10,   10,   10,    1,    1,    1,
-        1,    1,    1,    1,   11,   11,   11,   11,   11,   11,
-       11,   11,   11,   11,   11,   11,   11,   11,   11,   11,
-       11,   11,   11,   11,   11,   11,   11,   11,   11,   11,
-        1,   12,    1,    1,   11,    1,   11,   11,   11,   11,
-
-       11,   11,   11,   11,   11,   11,   11,   11,   11,   11,
-       11,   11,   11,   11,   11,   11,   11,   11,   11,   11,
-       11,   11,    1,    1,    1,    1,    1,    1,    1,    1,
+       11,    1,    1,    1,   12,   12,   12,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+       13,   14,   15,    1,   12,    1,   12,   12,   12,   12,
+
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+       12,   12,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -419,72 +422,111 @@ static yyconst flex_int32_t yy_ec[256] =
         1,    1,    1,    1,    1
     } ;
 
-static yyconst flex_int32_t yy_meta[13] =
+static yyconst flex_int32_t yy_meta[16] =
     {   0,
-        1,    2,    3,    2,    4,    1,    1,    1,    5,    5,
-        5,    1
+        1,    1,    2,    3,    4,    3,    1,    3,    5,    6,
+        1,    6,    1,    1,    7
     } ;
 
-static yyconst flex_int16_t yy_base[56] =
+static yyconst flex_int16_t yy_base[95] =
     {   0,
-        0,    0,   10,   20,   38,   32,    0,  109,  109,    0,
-       28,  109,  109,   35,    0,   23,  109,  109,   44,    0,
-       49,   26,    0,    0,    0,   22,    0,    0,   18,   24,
-      109,    0,   61,   20,    0,   18,    0,   17,   16,    0,
-       12,   11,   10,  109,   73,   16,   78,   83,   88,   93,
-       12,   98,   11,  103,    9
+        0,    0,   13,   25,   14,   16,   17,   18,   90,   88,
+       88,   39,   20,  237,  237,   74,   78,  237,  237,   13,
+       54,    0,   71,  237,  237,   31,    0,  237,   73,  237,
+      237,    0,    0,   65,   75,    0,   33,   30,   72,    0,
+        0,   75,   70,    0,   74,    0,    0,   62,   70,  237,
+        0,   63,    0,   85,   99,   65,  111,   62,   34,    0,
+       54,  116,    0,   54,  127,   51,  237,   50,    0,   48,
+       47,   39,   33,   29,   17,  237,  136,  143,  150,  157,
+      164,  171,  178,  184,  191,  198,  201,  207,  214,  217,
+      219,  225,  228,  230
+
     } ;
 
-static yyconst flex_int16_t yy_def[56] =
+static yyconst flex_int16_t yy_def[95] =
     {   0,
-       44,    1,   45,   45,   44,   44,   46,   44,   44,   47,
-        6,   44,   44,    6,   48,   49,   44,   44,   49,    6,
-       44,    6,   50,   46,   47,   51,   14,    6,   49,   49,
-       44,   21,   44,   21,   52,   53,   33,   51,   33,   54,
-       55,   53,   55,    0,   44,   44,   44,   44,   44,   44,
-       44,   44,   44,   44,   44
+       76,    1,   77,   77,   78,   78,   79,   79,   80,   80,
+       76,   76,   76,   76,   76,   76,   12,   76,   76,   12,
+       76,   81,   82,   76,   76,   82,   83,   76,   76,   76,
+       76,   84,   12,   85,   12,   86,   76,   76,   87,   20,
+       12,   88,   12,   21,   76,   89,   12,   82,   82,   76,
+       83,   76,   84,   85,   76,   54,   85,   90,   76,   55,
+       87,   88,   55,   62,   88,   91,   76,   55,   92,   93,
+       90,   94,   91,   93,   94,    0,   76,   76,   76,   76,
+       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
+       76,   76,   76,   76
+
     } ;
 
-static yyconst flex_int16_t yy_nxt[122] =
+static yyconst flex_int16_t yy_nxt[253] =
     {   0,
-        6,    7,    8,    7,    9,   10,   11,   12,   13,    6,
-       14,   15,   17,   43,   18,   42,   38,   24,   32,   33,
-       32,   19,   17,   36,   18,   37,   33,   41,   29,   30,
-       37,   19,   20,   36,   30,   26,   21,   44,   22,   44,
-       44,   20,   20,   23,   27,   27,   31,   44,   29,   32,
-       32,   44,   44,   33,   44,   34,   44,   44,   32,   32,
-       35,   33,   44,   44,   44,   21,   44,   39,   44,   44,
-       33,   33,   40,   16,   16,   16,   16,   16,   25,   25,
-       44,   25,   25,   28,   28,   44,   28,   28,   29,   29,
-       44,   44,   29,   20,   20,   44,   20,   20,   32,   32,
-
-       44,   32,   32,   33,   33,   44,   33,   33,    5,   44,
-       44,   44,   44,   44,   44,   44,   44,   44,   44,   44,
-       44
+       12,   13,   14,   13,   15,   16,   17,   18,   19,   12,
+       12,   20,   21,   22,   12,   24,   28,   25,   28,   28,
+       28,   37,   40,   37,   40,   62,   26,   24,   29,   25,
+       29,   31,   31,   50,   37,   48,   37,   54,   26,   33,
+       59,   63,   45,   34,   59,   35,   45,   62,   33,   33,
+       33,   33,   36,   33,   41,   55,   54,   58,   42,   63,
+       43,   72,   60,   41,   44,   41,   45,   46,   41,   55,
+       55,   56,   70,   52,   48,   49,   67,   66,   57,   63,
+       60,   64,   58,   52,   49,   39,   38,   76,   65,   55,
+       14,   56,   14,   76,   76,   76,   76,   76,   57,   55,
+
+       76,   76,   76,   34,   76,   68,   76,   76,   55,   55,
+       55,   55,   69,   55,   54,   76,   54,   76,   54,   54,
+       63,   76,   64,   76,   76,   76,   76,   76,   76,   65,
+       62,   76,   62,   76,   62,   62,   23,   23,   23,   23,
+       23,   23,   23,   27,   27,   27,   27,   27,   27,   27,
+       30,   30,   30,   30,   30,   30,   30,   32,   32,   32,
+       32,   32,   32,   32,   47,   76,   47,   47,   47,   47,
+       47,   48,   76,   48,   76,   48,   48,   48,   51,   76,
+       51,   51,   51,   51,   53,   76,   53,   53,   53,   53,
+       53,   54,   76,   76,   54,   76,   54,   54,   33,   76,
+
+       33,   33,   33,   33,   33,   61,   61,   62,   76,   76,
+       62,   76,   62,   62,   41,   76,   41,   41,   41,   41,
+       41,   71,   71,   73,   73,   55,   76,   55,   55,   55,
+       55,   55,   74,   74,   75,   75,   11,   76,   76,   76,
+       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
+       76,   76
     } ;
 
-static yyconst flex_int16_t yy_chk[122] =
+static yyconst flex_int16_t yy_chk[253] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-        1,    1,    3,   55,    3,   53,   51,   46,   43,   42,
-       41,    3,    4,   39,    4,   38,   36,   34,   30,   29,
-       26,    4,    6,   22,   16,   11,    6,    5,    6,    0,
-        0,    6,    6,    6,   14,   14,   19,    0,   19,   21,
-       21,    0,    0,   21,    0,   21,    0,    0,   21,   21,
-       21,   33,    0,    0,    0,   33,    0,   33,    0,    0,
-       33,   33,   33,   45,   45,   45,   45,   45,   47,   47,
-        0,   47,   47,   48,   48,    0,   48,   48,   49,   49,
-        0,    0,   49,   50,   50,    0,   50,   50,   52,   52,
-
-        0,   52,   52,   54,   54,    0,   54,   54,   44,   44,
-       44,   44,   44,   44,   44,   44,   44,   44,   44,   44,
-       44
+        1,    1,    1,    1,    1,    3,    5,    3,    6,    7,
+        8,   13,   20,   13,   20,   75,    3,    4,    5,    4,
+        6,    7,    8,   26,   37,   26,   37,   74,    4,   12,
+       38,   73,   38,   12,   59,   12,   59,   72,   12,   12,
+       12,   12,   12,   12,   21,   71,   70,   68,   21,   66,
+       21,   64,   61,   21,   21,   21,   21,   21,   21,   34,
+       58,   34,   56,   52,   49,   48,   45,   43,   34,   42,
+       39,   42,   35,   29,   23,   17,   16,   11,   42,   54,
+       10,   54,    9,    0,    0,    0,    0,    0,   54,   55,
+
+        0,    0,    0,   55,    0,   55,    0,    0,   55,   55,
+       55,   55,   55,   55,   57,    0,   57,    0,   57,   57,
+       62,    0,   62,    0,    0,    0,    0,    0,    0,   62,
+       65,    0,   65,    0,   65,   65,   77,   77,   77,   77,
+       77,   77,   77,   78,   78,   78,   78,   78,   78,   78,
+       79,   79,   79,   79,   79,   79,   79,   80,   80,   80,
+       80,   80,   80,   80,   81,    0,   81,   81,   81,   81,
+       81,   82,    0,   82,    0,   82,   82,   82,   83,    0,
+       83,   83,   83,   83,   84,    0,   84,   84,   84,   84,
+       84,   85,    0,    0,   85,    0,   85,   85,   86,    0,
+
+       86,   86,   86,   86,   86,   87,   87,   88,    0,    0,
+       88,    0,   88,   88,   89,    0,   89,   89,   89,   89,
+       89,   90,   90,   91,   91,   92,    0,   92,   92,   92,
+       92,   92,   93,   93,   94,   94,   76,   76,   76,   76,
+       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
+       76,   76
     } ;
 
 /* Table of booleans, true if rule could match eol. */
-static yyconst flex_int32_t yy_rule_can_match_eol[17] =
+static yyconst flex_int32_t yy_rule_can_match_eol[24] =
     {   0,
-1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0,     };
+1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0,
+    0, 0, 0, 0,     };
 
 /* The intent behind this definition is that it'll catch
  * any uses of REJECT which flex missed.
@@ -538,6 +580,8 @@ Modify cmListFileLexer.c:
 struct cmListFileLexer_s
 {
   cmListFileLexer_Token token;
+  int bracket;
+  int comment;
   int line;
   int column;
   int size;
@@ -565,10 +609,16 @@ static void cmListFileLexerDestroy(cmListFileLexer* lexer);
 
 /*--------------------------------------------------------------------------*/
 
-#line 571 "cmListFileLexer.c"
+
+
+
+#line 618 "cmListFileLexer.c"
 
 #define INITIAL 0
 #define STRING 1
+#define BRACKET 2
+#define BRACKETEND 3
+#define COMMENT 4
 
 #ifndef YY_NO_UNISTD_H
 /* Special case for "unistd.h", since it is non-ANSI. We include it way
@@ -794,10 +844,10 @@ YY_DECL
         int yy_act;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-#line 83 "cmListFileLexer.in.l"
+#line 88 "cmListFileLexer.in.l"
 
 
-#line 805 "cmListFileLexer.c"
+#line 855 "cmListFileLexer.c"
 
         if ( !yyg->yy_init )
                 {
@@ -850,13 +900,13 @@ yy_match:
                         while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
                                 {
                                 yy_current_state = (int) yy_def[yy_current_state];
-                                if ( yy_current_state >= 45 )
+                                if ( yy_current_state >= 77 )
                                         yy_c = yy_meta[(unsigned int) yy_c];
                                 }
                         yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
                         ++yy_cp;
                         }
-                while ( yy_base[yy_current_state] != 109 );
+                while ( yy_base[yy_current_state] != 237 );
 
 yy_find_action:
                 yy_act = yy_accept[yy_current_state];
@@ -895,69 +945,168 @@ do_action:      /* This label is used only to access EOF actions. */
 case 1:
 /* rule 1 can match eol */
 YY_RULE_SETUP
-#line 85 "cmListFileLexer.in.l"
+#line 90 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_Newline;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   ++lexer->line;
   lexer->column = 1;
+  BEGIN(INITIAL);
   return 1;
 }
 case 2:
+/* rule 2 can match eol */
 YY_RULE_SETUP
-#line 93 "cmListFileLexer.in.l"
+#line 99 "cmListFileLexer.in.l"
 {
-  lexer->column += yyleng;
+  const char* bracket = yytext;
+  lexer->comment = yytext[0] == '#';
+  if(lexer->comment)
+    {
+    lexer->token.type = cmListFileLexer_Token_CommentBracket;
+    bracket += 1;
+    }
+  else
+    {
+    lexer->token.type = cmListFileLexer_Token_ArgumentBracket;
+    }
+  cmListFileLexerSetToken(lexer, "", 0);
+  lexer->bracket = (int)(strchr(bracket+1, '[') - bracket);
+  if(yytext[yyleng-1] == '\n')
+    {
+    ++lexer->line;
+    lexer->column = 1;
+    }
+  else
+    {
+    lexer->column += yyleng;
+    }
+  BEGIN(BRACKET);
 }
         YY_BREAK
 case 3:
 YY_RULE_SETUP
-#line 97 "cmListFileLexer.in.l"
+#line 125 "cmListFileLexer.in.l"
+{
+  lexer->column += yyleng;
+  BEGIN(COMMENT);
+}
+        YY_BREAK
+case 4:
+YY_RULE_SETUP
+#line 130 "cmListFileLexer.in.l"
+{
+  lexer->column += yyleng;
+}
+        YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 134 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ParenLeft;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
   return 1;
 }
-case 4:
+case 6:
 YY_RULE_SETUP
-#line 104 "cmListFileLexer.in.l"
+#line 141 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ParenRight;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
   return 1;
 }
-case 5:
+case 7:
 YY_RULE_SETUP
-#line 111 "cmListFileLexer.in.l"
+#line 148 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_Identifier;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
   return 1;
 }
-case 6:
+case 8:
+YY_RULE_SETUP
+#line 155 "cmListFileLexer.in.l"
+{
+  /* Handle ]]====]=======]*/
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  if(yyleng == lexer->bracket)
+    {
+    BEGIN(BRACKETEND);
+    }
+}
+        YY_BREAK
+case 9:
 YY_RULE_SETUP
-#line 118 "cmListFileLexer.in.l"
+#line 165 "cmListFileLexer.in.l"
+{
+  lexer->column += yyleng;
+  /* Erase the partial bracket from the token.  */
+  lexer->token.length -= lexer->bracket;
+  lexer->token.text[lexer->token.length] = 0;
+  BEGIN(INITIAL);
+  return 1;
+}
+case 10:
+YY_RULE_SETUP
+#line 174 "cmListFileLexer.in.l"
+{
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+}
+        YY_BREAK
+case 11:
+/* rule 11 can match eol */
+YY_RULE_SETUP
+#line 179 "cmListFileLexer.in.l"
+{
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  ++lexer->line;
+  lexer->column = 1;
+  BEGIN(BRACKET);
+}
+        YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 186 "cmListFileLexer.in.l"
+{
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  BEGIN(BRACKET);
+}
+        YY_BREAK
+case YY_STATE_EOF(BRACKET):
+case YY_STATE_EOF(BRACKETEND):
+#line 192 "cmListFileLexer.in.l"
+{
+  lexer->token.type = cmListFileLexer_Token_BadBracket;
+  BEGIN(INITIAL);
+  return 1;
+}
+case 13:
+YY_RULE_SETUP
+#line 198 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
   return 1;
 }
-case 7:
+case 14:
 YY_RULE_SETUP
-#line 125 "cmListFileLexer.in.l"
+#line 205 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
   return 1;
 }
-case 8:
+case 15:
 YY_RULE_SETUP
-#line 132 "cmListFileLexer.in.l"
+#line 212 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ArgumentQuoted;
   cmListFileLexerSetToken(lexer, "", 0);
@@ -965,69 +1114,69 @@ YY_RULE_SETUP
   BEGIN(STRING);
 }
         YY_BREAK
-case 9:
+case 16:
 YY_RULE_SETUP
-#line 139 "cmListFileLexer.in.l"
+#line 219 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
 }
         YY_BREAK
-case 10:
-/* rule 10 can match eol */
+case 17:
+/* rule 17 can match eol */
 YY_RULE_SETUP
-#line 144 "cmListFileLexer.in.l"
+#line 224 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   ++lexer->line;
   lexer->column = 1;
 }
         YY_BREAK
-case 11:
-/* rule 11 can match eol */
+case 18:
+/* rule 18 can match eol */
 YY_RULE_SETUP
-#line 150 "cmListFileLexer.in.l"
+#line 230 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   ++lexer->line;
   lexer->column = 1;
 }
         YY_BREAK
-case 12:
+case 19:
 YY_RULE_SETUP
-#line 156 "cmListFileLexer.in.l"
+#line 236 "cmListFileLexer.in.l"
 {
   lexer->column += yyleng;
   BEGIN(INITIAL);
   return 1;
 }
-case 13:
+case 20:
 YY_RULE_SETUP
-#line 162 "cmListFileLexer.in.l"
+#line 242 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
 }
         YY_BREAK
 case YY_STATE_EOF(STRING):
-#line 167 "cmListFileLexer.in.l"
+#line 247 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_BadString;
   BEGIN(INITIAL);
   return 1;
 }
-case 14:
+case 21:
 YY_RULE_SETUP
-#line 173 "cmListFileLexer.in.l"
+#line 253 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_Space;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
   return 1;
 }
-case 15:
+case 22:
 YY_RULE_SETUP
-#line 180 "cmListFileLexer.in.l"
+#line 260 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_BadCharacter;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1035,18 +1184,19 @@ YY_RULE_SETUP
   return 1;
 }
 case YY_STATE_EOF(INITIAL):
-#line 187 "cmListFileLexer.in.l"
+case YY_STATE_EOF(COMMENT):
+#line 267 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_None;
   cmListFileLexerSetToken(lexer, 0, 0);
   return 0;
 }
-case 16:
+case 23:
 YY_RULE_SETUP
-#line 193 "cmListFileLexer.in.l"
+#line 273 "cmListFileLexer.in.l"
 ECHO;
         YY_BREAK
-#line 1065 "cmListFileLexer.c"
+#line 1217 "cmListFileLexer.c"
 
         case YY_END_OF_BUFFER:
                 {
@@ -1338,7 +1488,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
                 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
                         {
                         yy_current_state = (int) yy_def[yy_current_state];
-                        if ( yy_current_state >= 45 )
+                        if ( yy_current_state >= 77 )
                                 yy_c = yy_meta[(unsigned int) yy_c];
                         }
                 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
@@ -1367,11 +1517,11 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
         while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
                 {
                 yy_current_state = (int) yy_def[yy_current_state];
-                if ( yy_current_state >= 45 )
+                if ( yy_current_state >= 77 )
                         yy_c = yy_meta[(unsigned int) yy_c];
                 }
         yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
-        yy_is_jam = (yy_current_state == 44);
+        yy_is_jam = (yy_current_state == 76);
 
         return yy_is_jam ? 0 : yy_current_state;
 }
@@ -2167,7 +2317,7 @@ void cmListFileLexer_yyfree (void * ptr , yyscan_t yyscanner)
 
 #define YYTABLES_NAME "yytables"
 
-#line 193 "cmListFileLexer.in.l"
+#line 273 "cmListFileLexer.in.l"
 
 
 
@@ -2492,7 +2642,10 @@ const char* cmListFileLexer_GetTypeAsString(cmListFileLexer* lexer,
     case cmListFileLexer_Token_ParenRight: return "right paren";
     case cmListFileLexer_Token_ArgumentUnquoted: return "unquoted argument";
     case cmListFileLexer_Token_ArgumentQuoted: return "quoted argument";
+    case cmListFileLexer_Token_ArgumentBracket: return "bracket argument";
+    case cmListFileLexer_Token_CommentBracket: return "bracket comment";
     case cmListFileLexer_Token_BadCharacter: return "bad character";
+    case cmListFileLexer_Token_BadBracket: return "unterminated bracket";
     case cmListFileLexer_Token_BadString: return "unterminated string";
     }
   return "unknown token";
diff --git a/Source/cmListFileLexer.h b/Source/cmListFileLexer.h
index 719347c..bd2868a 100644
--- a/Source/cmListFileLexer.h
+++ b/Source/cmListFileLexer.h
@@ -22,7 +22,10 @@ typedef enum cmListFileLexer_Type_e
   cmListFileLexer_Token_ParenRight,
   cmListFileLexer_Token_ArgumentUnquoted,
   cmListFileLexer_Token_ArgumentQuoted,
+  cmListFileLexer_Token_ArgumentBracket,
+  cmListFileLexer_Token_CommentBracket,
   cmListFileLexer_Token_BadCharacter,
+  cmListFileLexer_Token_BadBracket,
   cmListFileLexer_Token_BadString
 } cmListFileLexer_Type;
 
diff --git a/Source/cmListFileLexer.in.l b/Source/cmListFileLexer.in.l
index e2ad0f5..ecaf156 100644
--- a/Source/cmListFileLexer.in.l
+++ b/Source/cmListFileLexer.in.l
@@ -42,6 +42,8 @@ Modify cmListFileLexer.c:
 struct cmListFileLexer_s
 {
   cmListFileLexer_Token token;
+  int bracket;
+  int comment;
   int line;
   int column;
   int size;
@@ -75,22 +77,57 @@ static void cmListFileLexerDestroy(cmListFileLexer* lexer);
 %option noyywrap
 %pointer
 %x STRING
+%x BRACKET
+%x BRACKETEND
+%x COMMENT
 
 MAKEVAR \$\([A-Za-z0-9_]*\)
-UNQUOTED ([^ \t\r\n\(\)#\\\"]|\\.)
-LEGACY {MAKEVAR}|{UNQUOTED}|\"({MAKEVAR}|{UNQUOTED}|[ \t])*\"
+UNQUOTED ([^ \t\r\n\(\)#\\\"[=]|\\.)
+LEGACY {MAKEVAR}|{UNQUOTED}|\"({MAKEVAR}|{UNQUOTED}|[ \t[=])*\"
 
 %%
 
-\n {
+<INITIAL,COMMENT>\n {
   lexer->token.type = cmListFileLexer_Token_Newline;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   ++lexer->line;
   lexer->column = 1;
+  BEGIN(INITIAL);
   return 1;
 }
 
-#.* {
+#?\[=*\[\n? {
+  const char* bracket = yytext;
+  lexer->comment = yytext[0] == '#';
+  if(lexer->comment)
+    {
+    lexer->token.type = cmListFileLexer_Token_CommentBracket;
+    bracket += 1;
+    }
+  else
+    {
+    lexer->token.type = cmListFileLexer_Token_ArgumentBracket;
+    }
+  cmListFileLexerSetToken(lexer, "", 0);
+  lexer->bracket = (int)(strchr(bracket+1, '[') - bracket);
+  if(yytext[yyleng-1] == '\n')
+    {
+    ++lexer->line;
+    lexer->column = 1;
+    }
+  else
+    {
+    lexer->column += yyleng;
+    }
+  BEGIN(BRACKET);
+}
+
+# {
+  lexer->column += yyleng;
+  BEGIN(COMMENT);
+}
+
+<COMMENT>.* {
   lexer->column += yyleng;
 }
 
@@ -115,14 +152,57 @@ LEGACY {MAKEVAR}|{UNQUOTED}|\"({MAKEVAR}|{UNQUOTED}|[ \t])*\"
   return 1;
 }
 
-({UNQUOTED})({UNQUOTED})* {
+<BRACKET>\]=* {
+  /* Handle ]]====]=======]*/
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  if(yyleng == lexer->bracket)
+    {
+    BEGIN(BRACKETEND);
+    }
+}
+
+<BRACKETEND>\] {
+  lexer->column += yyleng;
+  /* Erase the partial bracket from the token.  */
+  lexer->token.length -= lexer->bracket;
+  lexer->token.text[lexer->token.length] = 0;
+  BEGIN(INITIAL);
+  return 1;
+}
+
+<BRACKET>([^]\n])+ {
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+}
+
+<BRACKET,BRACKETEND>\n {
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  ++lexer->line;
+  lexer->column = 1;
+  BEGIN(BRACKET);
+}
+
+<BRACKET,BRACKETEND>. {
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  BEGIN(BRACKET);
+}
+
+<BRACKET,BRACKETEND><<EOF>> {
+  lexer->token.type = cmListFileLexer_Token_BadBracket;
+  BEGIN(INITIAL);
+  return 1;
+}
+
+({UNQUOTED}|=|\[=*{UNQUOTED})({UNQUOTED}|[[=])* {
   lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
   return 1;
 }
 
-({MAKEVAR}|{UNQUOTED})({LEGACY})* {
+({MAKEVAR}|{UNQUOTED}|=|\[=*{LEGACY})({LEGACY}|[[=])* {
   lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
   lexer->column += yyleng;
@@ -513,7 +593,10 @@ const char* cmListFileLexer_GetTypeAsString(cmListFileLexer* lexer,
     case cmListFileLexer_Token_ParenRight: return "right paren";
     case cmListFileLexer_Token_ArgumentUnquoted: return "unquoted argument";
     case cmListFileLexer_Token_ArgumentQuoted: return "quoted argument";
+    case cmListFileLexer_Token_ArgumentBracket: return "bracket argument";
+    case cmListFileLexer_Token_CommentBracket: return "bracket comment";
     case cmListFileLexer_Token_BadCharacter: return "bad character";
+    case cmListFileLexer_Token_BadBracket: return "unterminated bracket";
     case cmListFileLexer_Token_BadString: return "unterminated string";
     }
   return "unknown token";
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index a390e06..13c43fa 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -2867,6 +2867,12 @@ bool cmMakefile::ExpandArguments(
   outArgs.reserve(inArgs.size());
   for(i = inArgs.begin(); i != inArgs.end(); ++i)
     {
+    // No expansion in a bracket argument.
+    if(i->Delim == cmListFileArgument::Bracket)
+      {
+      outArgs.push_back(i->Value);
+      continue;
+      }
     // Expand the variables in the argument.
     value = i->Value;
     this->ExpandVariablesInString(value, false, false, false,
diff --git a/Tests/RunCMake/Syntax/.gitattributes b/Tests/RunCMake/Syntax/.gitattributes
index 567121f..35a9eaf 100644
--- a/Tests/RunCMake/Syntax/.gitattributes
+++ b/Tests/RunCMake/Syntax/.gitattributes
@@ -1,2 +1,3 @@
 CommandTabs.cmake   whitespace=-tab-in-indent
 StringCRLF.cmake    whitespace=cr-at-eol      -crlf
+BracketCRLF.cmake   whitespace=cr-at-eol      -crlf
diff --git a/Tests/RunCMake/Syntax/Bracket0-stderr.txt b/Tests/RunCMake/Syntax/Bracket0-stderr.txt
new file mode 100644
index 0000000..39cc2bc
--- /dev/null
+++ b/Tests/RunCMake/Syntax/Bracket0-stderr.txt
@@ -0,0 +1 @@
+^1 \${var} \\n 4$
diff --git a/Tests/RunCMake/Syntax/Bracket0.cmake b/Tests/RunCMake/Syntax/Bracket0.cmake
new file mode 100644
index 0000000..4bc0172
--- /dev/null
+++ b/Tests/RunCMake/Syntax/Bracket0.cmake
@@ -0,0 +1 @@
+message([[1 ${var} \n 4]])
diff --git a/Tests/RunCMake/Syntax/Bracket1-stderr.txt b/Tests/RunCMake/Syntax/Bracket1-stderr.txt
new file mode 100644
index 0000000..e1e13c1
--- /dev/null
+++ b/Tests/RunCMake/Syntax/Bracket1-stderr.txt
@@ -0,0 +1 @@
+^1 \${var} \\n 4\]==$
diff --git a/Tests/RunCMake/Syntax/Bracket1.cmake b/Tests/RunCMake/Syntax/Bracket1.cmake
new file mode 100644
index 0000000..587a575
--- /dev/null
+++ b/Tests/RunCMake/Syntax/Bracket1.cmake
@@ -0,0 +1,2 @@
+message([==[1 ]==] [=[
+${var} \n 4]==]=])
diff --git a/Tests/RunCMake/Syntax/Bracket2-stdout.txt b/Tests/RunCMake/Syntax/Bracket2-stdout.txt
new file mode 100644
index 0000000..0f8aa2f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/Bracket2-stdout.txt
@@ -0,0 +1,2 @@
+-- Bracket Argument 1
+-- Bracket Argument 2
diff --git a/Tests/RunCMake/Syntax/Bracket2.cmake b/Tests/RunCMake/Syntax/Bracket2.cmake
new file mode 100644
index 0000000..5c5feed
--- /dev/null
+++ b/Tests/RunCMake/Syntax/Bracket2.cmake
@@ -0,0 +1,2 @@
+message(STATUS [[Bracket Argument 1]] #[[Bracket Comment 1]])
+message(STATUS #[[Bracket Comment 2]] [[Bracket Argument 2]])
diff --git a/Tests/RunCMake/Syntax/BracketBackslash-result.txt b/Tests/RunCMake/Syntax/BracketBackslash-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketBackslash-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketBackslash-stderr.txt b/Tests/RunCMake/Syntax/BracketBackslash-stderr.txt
new file mode 100644
index 0000000..b746953
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketBackslash-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at BracketBackslash.cmake:1 \(message\):
+  a\\
+
+  b
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/Syntax/BracketBackslash.cmake b/Tests/RunCMake/Syntax/BracketBackslash.cmake
new file mode 100644
index 0000000..5478e5d
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketBackslash.cmake
@@ -0,0 +1,2 @@
+message(FATAL_ERROR [==[a\
+b]==])
diff --git a/Tests/RunCMake/Syntax/BracketCRLF-stderr.txt b/Tests/RunCMake/Syntax/BracketCRLF-stderr.txt
new file mode 100644
index 0000000..7aef26e
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketCRLF-stderr.txt
@@ -0,0 +1 @@
+CRLF->LF worked
diff --git a/Tests/RunCMake/Syntax/BracketCRLF.cmake b/Tests/RunCMake/Syntax/BracketCRLF.cmake
new file mode 100644
index 0000000..bda0e17
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketCRLF.cmake
@@ -0,0 +1,8 @@
+if([[

+]] STREQUAL "" AND

+[[a

+b]] STREQUAL "a\nb")

+  message("CRLF->LF worked")

+else()

+  message(FATAL_ERROR "CRLF->LF failed")

+endif()

diff --git a/Tests/RunCMake/Syntax/BracketComment0-stdout.txt b/Tests/RunCMake/Syntax/BracketComment0-stdout.txt
new file mode 100644
index 0000000..c9c0be4
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment0-stdout.txt
@@ -0,0 +1 @@
+-- The above FATAL_ERROR did not occur.
diff --git a/Tests/RunCMake/Syntax/BracketComment0.cmake b/Tests/RunCMake/Syntax/BracketComment0.cmake
new file mode 100644
index 0000000..0ee95de
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment0.cmake
@@ -0,0 +1,5 @@
+#[=[
+#]]
+message(FATAL_ERROR "This is commented out.")
+#]==]=]
+message(STATUS "The above FATAL_ERROR did not occur.")
diff --git a/Tests/RunCMake/Syntax/BracketComment1-result.txt b/Tests/RunCMake/Syntax/BracketComment1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketComment1-stderr.txt b/Tests/RunCMake/Syntax/BracketComment1-stderr.txt
new file mode 100644
index 0000000..a9373de
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment1-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at BracketComment1.cmake:2 \(message\):
+  This is not commented out.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/Syntax/BracketComment1.cmake b/Tests/RunCMake/Syntax/BracketComment1.cmake
new file mode 100644
index 0000000..2ec9d20
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment1.cmake
@@ -0,0 +1,3 @@
+##[[
+message(FATAL_ERROR "This is not commented out.")
+#]]
diff --git a/Tests/RunCMake/Syntax/BracketComment2-result.txt b/Tests/RunCMake/Syntax/BracketComment2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketComment2-stderr.txt b/Tests/RunCMake/Syntax/BracketComment2-stderr.txt
new file mode 100644
index 0000000..7e98222
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment2-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at BracketComment2.cmake:2 \(message\):
+  This is not commented out.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/Syntax/BracketComment2.cmake b/Tests/RunCMake/Syntax/BracketComment2.cmake
new file mode 100644
index 0000000..3eda32d
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment2.cmake
@@ -0,0 +1,3 @@
+# [[
+message(FATAL_ERROR "This is not commented out.")
+#]]
diff --git a/Tests/RunCMake/Syntax/BracketComment3-stdout.txt b/Tests/RunCMake/Syntax/BracketComment3-stdout.txt
new file mode 100644
index 0000000..c9c0be4
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment3-stdout.txt
@@ -0,0 +1 @@
+-- The above FATAL_ERROR did not occur.
diff --git a/Tests/RunCMake/Syntax/BracketComment3.cmake b/Tests/RunCMake/Syntax/BracketComment3.cmake
new file mode 100644
index 0000000..ffd03a9
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment3.cmake
@@ -0,0 +1,4 @@
+#[[Text on opening line
+message(FATAL_ERROR "This is commented out.")
+#]=]]
+message(STATUS "The above FATAL_ERROR did not occur.")
diff --git a/Tests/RunCMake/Syntax/BracketComment4-result.txt b/Tests/RunCMake/Syntax/BracketComment4-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment4-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketComment4-stderr.txt b/Tests/RunCMake/Syntax/BracketComment4-stderr.txt
new file mode 100644
index 0000000..8ba32c2
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment4-stderr.txt
@@ -0,0 +1,7 @@
+CMake Error: Error in cmake code at
+.*/Tests/RunCMake/Syntax/BracketComment4.cmake:3:
+Parse error.  Expected a newline, got identifier with text "message".
+CMake Error at CMakeLists.txt:3 \(include\):
+  include could not find load file:
+
+    BracketComment4.cmake
diff --git a/Tests/RunCMake/Syntax/BracketComment4.cmake b/Tests/RunCMake/Syntax/BracketComment4.cmake
new file mode 100644
index 0000000..9d586f1
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment4.cmake
@@ -0,0 +1,3 @@
+#[[
+message(FATAL_ERROR "This is commented out.")
+#]] message(STATUS "This command not allowed here")
diff --git a/Tests/RunCMake/Syntax/BracketComment5-stdout.txt b/Tests/RunCMake/Syntax/BracketComment5-stdout.txt
new file mode 100644
index 0000000..c9c0be4
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment5-stdout.txt
@@ -0,0 +1 @@
+-- The above FATAL_ERROR did not occur.
diff --git a/Tests/RunCMake/Syntax/BracketComment5.cmake b/Tests/RunCMake/Syntax/BracketComment5.cmake
new file mode 100644
index 0000000..bb6d9f3
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketComment5.cmake
@@ -0,0 +1,6 @@
+#[[
+message(FATAL_ERROR "This is commented out.")
+#]] #[[
+message(FATAL_ERROR "This is commented out.")
+#]] #message(FATAL_ERROR "This is commented out.")
+message(STATUS "The above FATAL_ERROR did not occur.")
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace0-result.txt b/Tests/RunCMake/Syntax/BracketNoSpace0-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace0-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace0-stderr.txt b/Tests/RunCMake/Syntax/BracketNoSpace0-stderr.txt
new file mode 100644
index 0000000..afd91f9
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace0-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at CMakeLists.txt:3 \(include\):
+  Syntax Error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/BracketNoSpace0.cmake:1:27
+
+  Argument not separated from preceding token by whitespace.
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace0.cmake b/Tests/RunCMake/Syntax/BracketNoSpace0.cmake
new file mode 100644
index 0000000..1de1450
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace0.cmake
@@ -0,0 +1 @@
+message(STATUS [[bracket]]unquoted)
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace1-result.txt b/Tests/RunCMake/Syntax/BracketNoSpace1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace1-stderr.txt b/Tests/RunCMake/Syntax/BracketNoSpace1-stderr.txt
new file mode 100644
index 0000000..826e511
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace1-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at CMakeLists.txt:3 \(include\):
+  Syntax Error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/BracketNoSpace1.cmake:1:24
+
+  Argument not separated from preceding token by whitespace.
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace1.cmake b/Tests/RunCMake/Syntax/BracketNoSpace1.cmake
new file mode 100644
index 0000000..7982bf3
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace1.cmake
@@ -0,0 +1 @@
+message(STATUS "string"[[bracket]])
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace2-result.txt b/Tests/RunCMake/Syntax/BracketNoSpace2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace2-stderr.txt b/Tests/RunCMake/Syntax/BracketNoSpace2-stderr.txt
new file mode 100644
index 0000000..23ecdcd
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace2-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at CMakeLists.txt:3 \(include\):
+  Syntax Error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/BracketNoSpace2.cmake:1:44
+
+  Argument not separated from preceding token by whitespace.
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace2.cmake b/Tests/RunCMake/Syntax/BracketNoSpace2.cmake
new file mode 100644
index 0000000..f1507f3
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace2.cmake
@@ -0,0 +1 @@
+message(STATUS "string"#[[bracket comment]][[bracket]])
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace3-result.txt b/Tests/RunCMake/Syntax/BracketNoSpace3-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace3-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace3-stderr.txt b/Tests/RunCMake/Syntax/BracketNoSpace3-stderr.txt
new file mode 100644
index 0000000..906d6fc
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace3-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at CMakeLists.txt:3 \(include\):
+  Syntax Error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/BracketNoSpace3.cmake:1:45
+
+  Argument not separated from preceding token by whitespace.
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace3.cmake b/Tests/RunCMake/Syntax/BracketNoSpace3.cmake
new file mode 100644
index 0000000..45dc900
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace3.cmake
@@ -0,0 +1 @@
+message(STATUS "string" #[[bracket comment]][[bracket]])
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace4-result.txt b/Tests/RunCMake/Syntax/BracketNoSpace4-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace4-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace4-stderr.txt b/Tests/RunCMake/Syntax/BracketNoSpace4-stderr.txt
new file mode 100644
index 0000000..a461e93
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace4-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at CMakeLists.txt:3 \(include\):
+  Syntax Error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/BracketNoSpace4.cmake:1:44
+
+  Argument not separated from preceding token by whitespace.
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace4.cmake b/Tests/RunCMake/Syntax/BracketNoSpace4.cmake
new file mode 100644
index 0000000..cb4ddbe
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace4.cmake
@@ -0,0 +1 @@
+message(STATUS "string"#[[bracket comment]]"string")
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace5-result.txt b/Tests/RunCMake/Syntax/BracketNoSpace5-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace5-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace5-stderr.txt b/Tests/RunCMake/Syntax/BracketNoSpace5-stderr.txt
new file mode 100644
index 0000000..ff8bf1c
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace5-stderr.txt
@@ -0,0 +1,6 @@
+CMake Error at CMakeLists.txt:3 \(include\):
+  Syntax Error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/BracketNoSpace5.cmake:1:45
+
+  Argument not separated from preceding token by whitespace.
diff --git a/Tests/RunCMake/Syntax/BracketNoSpace5.cmake b/Tests/RunCMake/Syntax/BracketNoSpace5.cmake
new file mode 100644
index 0000000..c684523
--- /dev/null
+++ b/Tests/RunCMake/Syntax/BracketNoSpace5.cmake
@@ -0,0 +1 @@
+message(STATUS "string" #[[bracket comment]]"string")
diff --git a/Tests/RunCMake/Syntax/BracketWarn-stderr.txt b/Tests/RunCMake/Syntax/BracketWarn-stderr.txt
deleted file mode 100644
index 4a9cca6..0000000
--- a/Tests/RunCMake/Syntax/BracketWarn-stderr.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-CMake Warning \(dev\) at CMakeLists.txt:3 \(include\):
-  Syntax Warning in cmake code at
-
-    .*/Tests/RunCMake/Syntax/BracketWarn.cmake:1:16
-
-  A future version of CMake may treat unquoted argument:
-
-    \[\[
-
-  as an opening long bracket.  Double-quote the argument.
-This warning is for project developers.  Use -Wno-dev to suppress it.
-
-CMake Warning \(dev\) at CMakeLists.txt:3 \(include\):
-  Syntax Warning in cmake code at
-
-    .*/Tests/RunCMake/Syntax/BracketWarn.cmake:1:19
-
-  A future version of CMake may treat unquoted argument:
-
-    \[=\[
-
-  as an opening long bracket.  Double-quote the argument.
-This warning is for project developers.  Use -Wno-dev to suppress it.
-
-CMake Warning \(dev\) at CMakeLists.txt:3 \(include\):
-  Syntax Warning in cmake code at
-
-    .*/Tests/RunCMake/Syntax/BracketWarn.cmake:1:27
-
-  A future version of CMake may treat unquoted argument:
-
-    \[==\[x
-
-  as an opening long bracket.  Double-quote the argument.
-This warning is for project developers.  Use -Wno-dev to suppress it.
diff --git a/Tests/RunCMake/Syntax/BracketWarn-stdout.txt b/Tests/RunCMake/Syntax/BracketWarn-stdout.txt
deleted file mode 100644
index 01b2caa..0000000
--- a/Tests/RunCMake/Syntax/BracketWarn-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
--- \[\[\[=\[\[=x\[==\[x
diff --git a/Tests/RunCMake/Syntax/BracketWarn.cmake b/Tests/RunCMake/Syntax/BracketWarn.cmake
deleted file mode 100644
index 8f33946..0000000
--- a/Tests/RunCMake/Syntax/BracketWarn.cmake
+++ /dev/null
@@ -1 +0,0 @@
-message(STATUS [[ [=[ [=x [==[x)
diff --git a/Tests/RunCMake/Syntax/CommandError2-result.txt b/Tests/RunCMake/Syntax/CommandError2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/CommandError2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/CommandError2-stderr.txt b/Tests/RunCMake/Syntax/CommandError2-stderr.txt
new file mode 100644
index 0000000..f4dfc77
--- /dev/null
+++ b/Tests/RunCMake/Syntax/CommandError2-stderr.txt
@@ -0,0 +1,7 @@
+CMake Error: Error in cmake code at
+.*/Tests/RunCMake/Syntax/CommandError2.cmake:1:
+Parse error.  Expected a command name, got bracket argument with text "oops-not-a-comment".
+CMake Error at CMakeLists.txt:3 \(include\):
+  include could not find load file:
+
+    CommandError2.cmake
diff --git a/Tests/RunCMake/Syntax/CommandError2.cmake b/Tests/RunCMake/Syntax/CommandError2.cmake
new file mode 100644
index 0000000..a269682
--- /dev/null
+++ b/Tests/RunCMake/Syntax/CommandError2.cmake
@@ -0,0 +1 @@
+message("Example Message") [[oops-not-a-comment]]
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace0-stdout.txt b/Tests/RunCMake/Syntax/ParenNoSpace0-stdout.txt
new file mode 100644
index 0000000..5c4076f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenNoSpace0-stdout.txt
@@ -0,0 +1,3 @@
+-- \(unquoted\)
+-- \(quoted\)
+-- \(bracket\)
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace0.cmake b/Tests/RunCMake/Syntax/ParenNoSpace0.cmake
new file mode 100644
index 0000000..175fe4a
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenNoSpace0.cmake
@@ -0,0 +1,3 @@
+message(STATUS (unquoted))
+message(STATUS ("quoted"))
+message(STATUS ([[bracket]]))
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace1-result.txt b/Tests/RunCMake/Syntax/ParenNoSpace1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenNoSpace1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace1-stderr.txt b/Tests/RunCMake/Syntax/ParenNoSpace1-stderr.txt
new file mode 100644
index 0000000..64ef8b1
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenNoSpace1-stderr.txt
@@ -0,0 +1,22 @@
+CMake Warning \(dev\) at CMakeLists.txt:3 \(include\):
+  Syntax Warning in cmake code at
+
+    .*/Tests/RunCMake/Syntax/ParenNoSpace1.cmake:1:26
+
+  Argument not separated from preceding token by whitespace.
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at CMakeLists.txt:3 \(include\):
+  Syntax Warning in cmake code at
+
+    .*/Tests/RunCMake/Syntax/ParenNoSpace1.cmake:2:26
+
+  Argument not separated from preceding token by whitespace.
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Error at CMakeLists.txt:3 \(include\):
+  Syntax Error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/ParenNoSpace1.cmake:3:29
+
+  Argument not separated from preceding token by whitespace.
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace1.cmake b/Tests/RunCMake/Syntax/ParenNoSpace1.cmake
new file mode 100644
index 0000000..550339a
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenNoSpace1.cmake
@@ -0,0 +1,3 @@
+message(STATUS (unquoted)unquoted)
+message(STATUS ("quoted")"quoted")
+message(STATUS ([[bracket]])[[bracket]])
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace-stderr.txt b/Tests/RunCMake/Syntax/ParenNoSpace2-stderr.txt
index 10f3293..10f3293 100644
--- a/Tests/RunCMake/Syntax/ParenNoSpace-stderr.txt
+++ b/Tests/RunCMake/Syntax/ParenNoSpace2-stderr.txt
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace-stdout.txt b/Tests/RunCMake/Syntax/ParenNoSpace2-stdout.txt
index 72addd7..0e657b9 100644
--- a/Tests/RunCMake/Syntax/ParenNoSpace-stdout.txt
+++ b/Tests/RunCMake/Syntax/ParenNoSpace2-stdout.txt
@@ -1,2 +1,3 @@
 -- unquoted\(unquoted\)
 -- quoted\(quoted\)
+-- bracket\(bracket\)
diff --git a/Tests/RunCMake/Syntax/ParenNoSpace.cmake b/Tests/RunCMake/Syntax/ParenNoSpace2.cmake
index c690d96..c46a887 100644
--- a/Tests/RunCMake/Syntax/ParenNoSpace.cmake
+++ b/Tests/RunCMake/Syntax/ParenNoSpace2.cmake
@@ -1,2 +1,3 @@
 message(STATUS unquoted(unquoted))
 message(STATUS "quoted"("quoted"))
+message(STATUS [[bracket]]([[bracket]]))
diff --git a/Tests/RunCMake/Syntax/RunCMakeTest.cmake b/Tests/RunCMake/Syntax/RunCMakeTest.cmake
index 1399d8b..f5e0d11 100644
--- a/Tests/RunCMake/Syntax/RunCMakeTest.cmake
+++ b/Tests/RunCMake/Syntax/RunCMakeTest.cmake
@@ -11,6 +11,7 @@ run_cmake(CommandNewlines)
 run_cmake(CommandComments)
 run_cmake(CommandError0)
 run_cmake(CommandError1)
+run_cmake(CommandError2)
 run_cmake(String0)
 run_cmake(String1)
 run_cmake(StringCRLF)
@@ -18,8 +19,29 @@ run_cmake(StringNoSpace)
 run_cmake(OneLetter)
 run_cmake(Unquoted0)
 run_cmake(Unquoted1)
-run_cmake(ParenNoSpace)
+run_cmake(Bracket0)
+run_cmake(Bracket1)
+run_cmake(Bracket2)
+run_cmake(BracketBackslash)
+run_cmake(BracketCRLF)
+run_cmake(BracketComment0)
+run_cmake(BracketComment1)
+run_cmake(BracketComment2)
+run_cmake(BracketComment3)
+run_cmake(BracketComment4)
+run_cmake(BracketComment5)
+run_cmake(BracketNoSpace0)
+run_cmake(BracketNoSpace1)
+run_cmake(BracketNoSpace2)
+run_cmake(BracketNoSpace3)
+run_cmake(BracketNoSpace4)
+run_cmake(BracketNoSpace5)
+run_cmake(ParenNoSpace0)
+run_cmake(ParenNoSpace1)
+run_cmake(ParenNoSpace2)
 run_cmake(UnterminatedCall1)
 run_cmake(UnterminatedCall2)
 run_cmake(UnterminatedString)
-run_cmake(BracketWarn)
+run_cmake(UnterminatedBracket0)
+run_cmake(UnterminatedBracket1)
+run_cmake(UnterminatedBracketComment)
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracket0-result.txt b/Tests/RunCMake/Syntax/UnterminatedBracket0-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracket0-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracket0-stderr.txt b/Tests/RunCMake/Syntax/UnterminatedBracket0-stderr.txt
new file mode 100644
index 0000000..3559c18
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracket0-stderr.txt
@@ -0,0 +1,8 @@
+CMake Error: Error in cmake code at
+.*/Syntax/UnterminatedBracket0.cmake:2:
+Parse error.  Function missing ending "\)".  Instead found unterminated bracket with text "\)
+".
+CMake Error at CMakeLists.txt:3 \(include\):
+  include could not find load file:
+
+    UnterminatedBracket0.cmake$
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracket0.cmake b/Tests/RunCMake/Syntax/UnterminatedBracket0.cmake
new file mode 100644
index 0000000..98cd906
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracket0.cmake
@@ -0,0 +1 @@
+set(var [[)
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracket1-result.txt b/Tests/RunCMake/Syntax/UnterminatedBracket1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracket1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracket1-stderr.txt b/Tests/RunCMake/Syntax/UnterminatedBracket1-stderr.txt
new file mode 100644
index 0000000..55d458b
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracket1-stderr.txt
@@ -0,0 +1,8 @@
+CMake Error: Error in cmake code at
+.*/Syntax/UnterminatedBracket1.cmake:2:
+Parse error.  Function missing ending "\)".  Instead found unterminated bracket with text "\]\]\)
+".
+CMake Error at CMakeLists.txt:3 \(include\):
+  include could not find load file:
+
+    UnterminatedBracket1.cmake$
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracket1.cmake b/Tests/RunCMake/Syntax/UnterminatedBracket1.cmake
new file mode 100644
index 0000000..706f7a3
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracket1.cmake
@@ -0,0 +1 @@
+set(var [=[]])
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracketComment-result.txt b/Tests/RunCMake/Syntax/UnterminatedBracketComment-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracketComment-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracketComment-stderr.txt b/Tests/RunCMake/Syntax/UnterminatedBracketComment-stderr.txt
new file mode 100644
index 0000000..0a799eb
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracketComment-stderr.txt
@@ -0,0 +1,8 @@
+CMake Error: Error in cmake code at
+.*/Syntax/UnterminatedBracketComment.cmake:1:
+Parse error.  Expected a command name, got unterminated bracket with text "#\]\]
+".
+CMake Error at CMakeLists.txt:3 \(include\):
+  include could not find load file:
+
+    UnterminatedBracketComment.cmake
diff --git a/Tests/RunCMake/Syntax/UnterminatedBracketComment.cmake b/Tests/RunCMake/Syntax/UnterminatedBracketComment.cmake
new file mode 100644
index 0000000..ad71f3c
--- /dev/null
+++ b/Tests/RunCMake/Syntax/UnterminatedBracketComment.cmake
@@ -0,0 +1,2 @@
+#[=[
+#]]