3 files changed, 13 insertions, 8 deletions
diff --git a/src/bltConfig.C b/src/bltConfig.C
index d76c4d1..879299b 100644
--- a/src/bltConfig.C
+++ b/src/bltConfig.C
@@ -173,7 +173,7 @@ static int ListSetProc(ClientData clientData, Tcl_Interp *interp,
   const char*** listPtr = (const char***)(widgRec + offset);
   *(double*)savePtr = *(double*)listPtr;
 
-  if (!listPtr)
+  if (!(*listPtr))
     return TCL_OK;
 
   const char** argv;
@@ -191,14 +191,14 @@ static Tcl_Obj* ListGetProc(ClientData clientData, Tk_Window tkwin,
 {
   const char*** listPtr = (const char***)(widgRec + offset);
 
-  if (!listPtr)
+  if (!(*listPtr))
     return Tcl_NewListObj(0, NULL);
 
   // count how many
   int cnt=0;
-  for (const char** p = *listPtr; *p != NULL; p++,cnt++) {}
+  for (const char** p = *listPtr; *p; p++,cnt++) {}
   if (!cnt)
-    return Tcl_NewListObj(0, (Tcl_Obj**)NULL);
+    return Tcl_NewListObj(0, NULL);
 
   Tcl_Obj** ll = (Tcl_Obj**)calloc(cnt, sizeof(Tcl_Obj*));
   for (int ii=0; ii<cnt; ii++)
diff --git a/src/bltGrPSOutput.C b/src/bltGrPSOutput.C
index cd10076..e43b370 100644
--- a/src/bltGrPSOutput.C
+++ b/src/bltGrPSOutput.C
@@ -609,10 +609,13 @@ int PostScript::preamble(const char* fileName)
 
 void PostScript::addComments(const char** comments)
 {
-  for (const char** p = comments; *p; p += 2) {
-    if (*(p+1) == NULL)
+  if (!comments)
+    return;
+
+  for (const char** pp = comments; *pp; pp+=2) {
+    if (*(pp+1) == NULL)
       break;
-    format("%% %s: %s\n", *p, *(p+1));
+    format("%% %s: %s\n", *pp, *(pp+1));
   }
 }
 
diff --git a/src/bltGrPostscriptOp.C b/src/bltGrPostscriptOp.C
index 70c6474..576ab54 100644
--- a/src/bltGrPostscriptOp.C
+++ b/src/bltGrPostscriptOp.C
@@ -127,7 +127,9 @@ static int OutputOp(ClientData clientData, Tcl_Interp* interp,
   if (objc > 3) {
     fileName = Tcl_GetString(objv[3]);
     if (fileName[0] != '-') {
-      objv++, objc--;		/* First argument is the file name. */
+      // First argument is the file name
+      objv++, objc--;
+
       channel = Tcl_OpenFileChannel(interp, fileName, "w", 0666);
       if (!channel)
 	return TCL_ERROR;