NPAR TESTS: Consistently order variables in summary statistics.

The set of variables in the NPAR TESTS specs structure was ordered
randomly, according to however the hash function happened to arrange them.
Sort them by variable name, instead, so that they always appear in
alphabetical order in, e.g., descriptive statistics output.

The particular hash function PSPP uses now tends to order variables
alphabetically anyhow.  The next commit changes the PSPP hash functions,
so fixing this in advance prevents having to update any test output.

diff --git a/src/language/stats/npar.q b/src/language/stats/npar.q
index 3234c4f73127f7248817151f822916fb1c3a1869..bbccce671f075b161b1e95170d07197c6a3ac69d 100644 (file)
--- a/src/language/stats/npar.q
+++ b/src/language/stats/npar.q
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis. -*-c-*-
-   Copyright (C) 2006, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -160,7 +160,7 @@ cmd_npar_tests (struct lexer *lexer, struct dataset *ds)
       test->insert_variables (test, var_hash);
     }
 
-  npar_specs.vv = (const struct variable **) const_hsh_data (var_hash);
+  npar_specs.vv = (const struct variable **) const_hsh_sort (var_hash);
   npar_specs.n_vars = const_hsh_count (var_hash);
 
   if ( cmd.sbc_statistics )