git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@11482 f3b2605a-c512-4ea7-a41b-209d697bcdaa

src/Makefile

@@ -160,8 +160,8 @@ package:
 	@echo 'make no-lib               remove all packages with external libs'
 	@echo ''
 	@echo 'make package-update (pu)  replace src files with package files'
-	@echo 'make package-overwrite (po) replace package files with src files'
-	@echo 'make package-diff           diff src files against package file'
+	@echo 'make package-overwrite    replace package files with src files'
+	@echo 'make package-diff (pd)    diff src files against package file'
 
 yes-all:
 	@for p in $(PACKALL); do $(MAKE) yes-$$p; done
@@ -229,12 +229,12 @@ package-update pu:
 	@echo ''
 	@for p in $(PACKUSERUC); do $(SHELL) Package.sh $$p update; done
 
-package-overwrite po:
+package-overwrite:
 	@for p in $(PACKAGEUC); do $(SHELL) Package.sh $$p overwrite; done
 	@echo ''
 	@for p in $(PACKUSERUC); do $(SHELL) Package.sh $$p overwrite; done
 
-package-diff:
+package-diff pd:
 	@for p in $(PACKAGEUC); do $(SHELL) Package.sh $$p diff; done
 	@echo ''
 	@for p in $(PACKUSERUC); do $(SHELL) Package.sh $$p diff; done

src/group.cpp

@@ -439,8 +439,13 @@ void Group::assign(int narg, char **arg)
   } else if (strcmp(arg[1],"dynamic") == 0) {
 
     if (narg < 4) error->all(FLERR,"Illegal group command");
+    if (strcmp(arg[0],arg[2]) == 0) 
+      error->all(FLERR,"Group dynamic cannot reference itself");
+    if (find(arg[2]) < 0) 
+      error->all(FLERR,"Group dynamic parent group does not exist");
+    if (igroup = 0) error->all(FLERR,"Group all cannot be made dynamic");
 
-    // if group is already dynamic, delete current FixGroup
+    // if group is already dynamic, delete existing FixGroup
 
     if (dynamic[igroup]) {
       int n = strlen("GROUP_") + strlen(names[igroup]) + 1;