cellar launch now reads and respects wine-path setting (fixes #23)

src/config/cli_handler.cpp

@@ -57,8 +57,7 @@ void cellar::config::config_command(int argc, vector<string> argv) {
             return;
         }
 
-        string key = argv[2];
-        string newvalue = argv[3];
+        string newvalue = value;
         string oldvalue = active_bottle.get_config(key);
 
         if (active_bottle.set_config(key, newvalue)) {

src/launch/launch.cpp

@@ -6,6 +6,7 @@
 #include <boost/algorithm/string.hpp>
 #include "subprocess.hpp"
 
+#include "bottles.hpp"
 #include "launch.hpp"
 #include "internal/launch.hpp"
 #include "output.hpp"
@@ -14,7 +15,11 @@ using namespace std;
 using namespace cellar;
 
 void cellar::launch::launch_program(vector<string> args) {
-    args[0] = "wine";
+    string winepath = bottles::active_bottle.get_config("wine-path");
+    if (winepath == "") { winepath = "wine"; } // lets assume wine is in PATH if there's no config for it
+                                               // TODO: better support for compiled in defaults (cogrc?)
+
+    args[0] = winepath;
     launch::popen(args);
 }