BUG: Do not replace @VAR@ syntax in list files. This addresses bug #2722.

Source/cmCommandArgumentParser.cxx

@@ -1320,7 +1320,7 @@ yyreduce:
   case 17:
 #line 178 "cmCommandArgumentParser.y"
     {
-  (yyval.str) = yyGetParser->ExpandVariable((yyvsp[0].str));
+  (yyval.str) = yyGetParser->ExpandVariableForAt((yyvsp[0].str));
 }
     break;
 

Source/cmCommandArgumentParser.y

@@ -193,7 +193,7 @@ cal_DCURLY MultipleIds cal_RCURLY
 |
 cal_ATNAME
 {
-  $<str>$ = yyGetParser->ExpandVariable($<str>1);
+  $<str>$ = yyGetParser->ExpandVariableForAt($<str>1);
 }
 
 MultipleIds:

Source/cmCommandArgumentParserHelper.cxx

@@ -37,6 +37,7 @@ cmCommandArgumentParserHelper::cmCommandArgumentParserHelper()
   strcpy(this->BSLASHVariable, "\\");
 
   this->NoEscapeMode = false;
+  this->ReplaceAtSyntax = false;
 }
 
 
@@ -115,6 +116,21 @@ char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
   return this->AddString(value);
 }
 
+char* cmCommandArgumentParserHelper::ExpandVariableForAt(const char* var)
+{
+  if(this->ReplaceAtSyntax)
+    {
+    return this->ExpandVariable(var);
+    }
+  else
+    {
+    std::string ref = "@";
+    ref += var;
+    ref += "@";
+    return this->AddString(ref.c_str());
+    }
+}
+
 char* cmCommandArgumentParserHelper::CombineUnions(char* in1, char* in2)
 {
   if ( !in1 )

Source/cmCommandArgumentParserHelper.h

@@ -59,6 +59,7 @@ public:
 
   char* ExpandSpecialVariable(const char* key, const char* var);
   char* ExpandVariable(const char* var);
+  char* ExpandVariableForAt(const char* var);
   void SetResult(const char* value);
 
   void SetMakefile(const cmMakefile* mf);
@@ -68,6 +69,7 @@ public:
   void SetLineFile(long line, const char* file);
   void SetEscapeQuotes(bool b) { this->EscapeQuotes = b; }
   void SetNoEscapeMode(bool b) { this->NoEscapeMode = b; }
+  void SetReplaceAtSyntax(bool b) { this->ReplaceAtSyntax = b; }
 
   const char* GetError() { return this->ErrorString.c_str(); } 
   char EmptyVariable[1];
@@ -101,6 +103,7 @@ private:
   bool EscapeQuotes;
   std::string ErrorString;
   bool NoEscapeMode;
+  bool ReplaceAtSyntax;
 };
 
 #endif

Source/cmMakefile.cxx

@@ -1662,7 +1662,8 @@ const char *cmMakefile::ExpandVariablesInString(std::string& source,
                                                 bool atOnly,
                                                 const char* filename,
                                                 long line,
-                                                bool removeEmpty) const
+                                                bool removeEmpty,
+                                                bool replaceAt) const
 {
   if ( source.empty() || source.find_first_of("$@\\") == source.npos)
     {
@@ -1681,6 +1682,7 @@ const char *cmMakefile::ExpandVariablesInString(std::string& source,
     parser.SetLineFile(line, filename);
     parser.SetEscapeQuotes(escapeQuotes);
     parser.SetNoEscapeMode(noEscapes);
+    parser.SetReplaceAtSyntax(replaceAt);
     int res = parser.ParseString(source.c_str(), 0);
     if ( res )
       {
@@ -2022,7 +2024,8 @@ void cmMakefile::ExpandArguments(
     // Expand the variables in the argument.
     value = i->Value;
     this->ExpandVariablesInString(value, false, false, false, 
-                                  i->FilePath, i->Line);
+                                  i->FilePath, i->Line,
+                                  false, false);
 
     // If the argument is quoted, it should be one argument.
     // Otherwise, it may be a list of arguments.

Source/cmMakefile.h

@@ -570,7 +570,8 @@ public:
                                       bool atOnly = false,
                                       const char* filename = 0,
                                       long line = -1,
-                                      bool removeEmpty = false) const;
+                                      bool removeEmpty = false,
+                                      bool replaceAt = true) const;
 
   /**
    * Remove any remaining variables in the string. Anything with ${var} or