simplify parsing of MATLAB command line arguments

closes #1696

includes preprocessor changes
- Removed prefixing of doubles between -1 and 1 with 0.
- Fixed bug introduced in 985d742.
- macro processor: simplify handling of `@#define`

doc/manual/source/running-dynare.rst

@@ -338,9 +338,20 @@ by the ``dynare`` command.
 
     .. option:: -DMACRO_VARIABLE=MACRO_EXPRESSION
 
-        Defines a macro-variable from the command line (the same
-        effect as using the Macro directive ``@#define`` in a model
-        file, see :ref:`macro-proc-lang`).
+        Defines a macro-variable from the command line (the same effect as
+        using the Macro directive ``@#define`` in a model file, see
+        :ref:`macro-proc-lang`). Note that when passing a MACRO_EXPRESSION that
+        contains a space, you must surround the entire ``-D`` flag with single
+        quotes, as in the following example. Also note that an expression
+        passed on the command line can reference variables defined before it.
+
+        *Example*
+
+        Call dynare with command line defines
+
+            .. code-block:: matlab
+
+               >> dynare <<modfile.mod>> -DA=true '-DB="A string with space"' -DC=[1,2,3] '-DD=[ i in C when i > 1 ]'
 
     .. option:: -I<<path>>
 

matlab/dynare.m

@@ -213,7 +213,18 @@ end
 command = ['"' dynareroot 'preprocessor' arch_ext filesep 'dynare_m" ' fname] ;
 command = [ command ' mexext=' mexext ' "matlabroot=' matlabroot '"'];
 if ~isempty(varargin)
-    dynare_varargin = strjoin(varargin);
+    if ispc
+        varargincopy = varargin;
+        for i = 1:length(varargincopy)
+            if varargincopy{i}(end) == '\'
+                varargincopy{i} = [varargincopy{i} '\'];
+            end
+        end
+        varargincopy = strrep(varargincopy, '"', '\"');
+        dynare_varargin = ['"' strjoin(varargincopy, '" "') '"'];
+    else
+        dynare_varargin = ['''' strjoin(varargin, ''' ''') ''''];
+    end
     command = [command ' ' dynare_varargin];
 end
 

preprocessor

@@ -1 +1 @@
-Subproject commit bef537d40accd597c19f112471974b726c9c9890
+Subproject commit 148aa9d9249577e72213e8856d7d5e97fcf75db3