X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Futilities%2Fset.q;h=0bd7738591a773675ed1bbf070e5d742b483b49d;hb=a27e454d1a65872d0b1147f320ba8cc42aa9275f;hp=6a1d184f600f88d28723a409b5237ad1b30a3c7e;hpb=f51ecb48027e6b1eb46840ae25888a25b429f012;p=pspp

diff --git a/src/language/utilities/set.q b/src/language/utilities/set.q
index 6a1d184f60..0bd7738591 100644
--- a/src/language/utilities/set.q
+++ b/src/language/utilities/set.q
@@ -484,6 +484,10 @@ stc_custom_format (struct lexer *lexer, struct dataset *ds UNUSED, struct cmd_se
   lex_match (lexer, '=');
   if (!parse_format_specifier (lexer, &fmt))
     return 0;
+
+  if (!fmt_check_output (&fmt))
+    return 0;
+  
   if (fmt_is_string (fmt.type))
     {
       char str[FMT_STRING_LEN_MAX + 1];
@@ -614,13 +618,13 @@ show_cce (const struct dataset *ds UNUSED)
 static char *
 show_decimals (const struct dataset *ds UNUSED)
 {
-  return xasprintf ("\"%c\"", settings_get_decimal_char (FMT_F));
+  return xasprintf ("`%c'", settings_get_decimal_char (FMT_F));
 }
 
 static char *
 show_endcmd (const struct dataset *ds UNUSED)
 {
-  return xasprintf ("\"%c\"", settings_get_endcmd ());
+  return xasprintf ("`%c'", settings_get_endcmd ());
 }
 
 static char *
@@ -919,6 +923,45 @@ cmd_show (struct lexer *lexer, struct dataset *ds)
 
   return CMD_SUCCESS;
 }
+
+#define MAX_SAVED_SETTINGS 5
+
+static struct settings *saved_settings[MAX_SAVED_SETTINGS];
+static int n_saved_settings;
+
+int
+cmd_preserve (struct lexer *lexer, struct dataset *ds UNUSED)
+{
+  if (n_saved_settings < MAX_SAVED_SETTINGS)
+    {
+      saved_settings[n_saved_settings++] = settings_get ();
+      return lex_end_of_command (lexer);
+    }
+  else
+    {
+      msg (SE, _("Too many PRESERVE commands without a RESTORE: at most "
+                 "%d levels of saved settings are allowed."),
+           MAX_SAVED_SETTINGS);
+      return CMD_CASCADING_FAILURE;
+    }
+}
+
+int
+cmd_restore (struct lexer *lexer, struct dataset *ds UNUSED)
+{
+  if (n_saved_settings > 0)
+    {
+      struct settings *s = saved_settings[--n_saved_settings];
+      settings_set (s);
+      settings_destroy (s);
+      return lex_end_of_command (lexer);
+    }
+  else
+    {
+      msg (SE, _("RESTORE without matching PRESERVE."));
+      return CMD_FAILURE;
+    }
+}
 
 /*
    Local Variables: