here it is

Moe,

Here it is, I have added a subroutine to env.c to
unset the user's environment and then called it
from sbatch in main. I also removed the comment
from the sbatch man page indicating that it
wasn't working the same for a regular user as
it did for Moab. It should now be functionally
the same.

I think there is still a difference between how
sbatch functions with an environment in a file
than it does from when Moab excve'd the environment.
However, I'm not sure what it would be at this
point.

Again,  for so many iterations....

Phil

doc/man/man1/sbatch.1

@@ -384,9 +384,7 @@ assumed.  Export environment variables defined in <\fIfilename\fR> or
 read from <\fIfd\fR> to the job's execution environment. The
 content is one or more environment variable definitions of the form
 NAME=value, each separated by a null character.  This allows the use
-of special characters in environment definitions.(Note: primarily for use
-with Moab. outside of Moab, variables in the user's working environment
-may supercede the variables specified in the file.)
+of special characters in environment definitions.
 
 .TP
 \fB\-F\fR, \fB\-\-nodefile\fR=<\fInode file\fR>

src/common/env.c

@@ -81,6 +81,7 @@ strong_alias(env_array_append,		slurm_env_array_append);
 strong_alias(env_array_append_fmt,	slurm_env_array_append_fmt);
 strong_alias(env_array_overwrite,	slurm_env_array_overwrite);
 strong_alias(env_array_overwrite_fmt,	slurm_env_array_overwrite_fmt);
+strong_alias(env_unset_environment,	slurm_env_unset_environment);
 
 #define ENV_BUFSIZE (256 * 1024)
 
@@ -1526,6 +1527,33 @@ void env_array_set_environment(char **env_array)
 	}
 }
 
+/*
+ * Unset all of the environment variables in a user's current
+ * environment.
+ *
+ * (Note: becuae the environ array is decrementing with each
+ *  unsetenv, only increment the ptr on a failure to unset.)
+ */
+void env_unset_environment(void)
+{
+	extern char **environ;
+
+	int rc = 0;
+	char **ptr;
+	char name[256], *value;
+
+	value = xmalloc(ENV_BUFSIZE);
+	for (ptr = (char **)environ; *ptr != NULL; ) {
+		if ((_env_array_entry_splitter(*ptr, name, sizeof(name),
+					       value, ENV_BUFSIZE)) &&
+			(unsetenv(name) != -1))
+			rc = 1;
+		else
+			ptr++;
+	}
+	xfree(value);
+}
+
 /*
  * Merge all of the environment variables in src_array into the
  * array dest_array.  Any variables already found in dest_array

src/common/env.h

@@ -180,6 +180,12 @@ env_array_for_step(char ***dest,
  */
 char **env_array_create(void);
 
+/*
+ * Unset all of the environment variables in a user's current
+ * environment.
+ */
+void env_unset_environment(void);
+
 /*
  * Merge all of the environment variables in src_array into the
  * array dest_array.  Any variables already found in dest_array

src/sbatch/sbatch.c

@@ -137,6 +137,13 @@ int main(int argc, char *argv[])
 		(void) _set_rlimit_env();
 	}
 
+	/*
+	 * if the environment is coming from a file, the
+	 * environment at execution startup, must be unset.
+	 */
+	if (opt.export_file != NULL)
+		env_unset_environment();
+
 	_set_prio_process_env();
 	_set_spank_env();
 	_set_submit_dir_env();