When a GUC string variable is not set, print the empty string (in SHOW etc.),

petere · petere · commit cd2a6b57c05f · 2006-07-26T11:39:47.000Z
not "unset".  An "unset" state doesn't really exist; all variables behave
like an empty string value if the string being pointed to has not been
initialized.
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
@@ -10,7 +10,7 @@
  * Written by Peter Eisentraut <peter_e@gmx.net>.
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.330 2006/07/26 11:35:56 petere Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.331 2006/07/26 11:39:47 petere Exp $
  *
  *--------------------------------------------------------------------
  */
@@ -5113,7 +5113,7 @@ _ShowOption(struct config_generic * record)
 				else if (*conf->variable && **conf->variable)
 					val = *conf->variable;
 				else
-					val = "unset";
+					val = "";
 			}
 			break;
 

Original file line number	Diff line number	Diff line change
`@@ -10,7 +10,7 @@`
`10`	`10`	`* Written by Peter Eisentraut <peter_e@gmx.net>.`
`11`	`11`	`*`
`12`	`12`	`* IDENTIFICATION`
`13`		`- * $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.330 2006/07/26 11:35:56 petere Exp $`
	`13`	`+ * $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.331 2006/07/26 11:39:47 petere Exp $`
`14`	`14`	`*`
`15`	`15`	`*--------------------------------------------------------------------`
`16`	`16`	`*/`
`@@ -5113,7 +5113,7 @@ _ShowOption(struct config_generic * record)`
`5113`	`5113`	`else if (conf->variable && *conf->variable)`
`5114`	`5114`	`val = *conf->variable;`
`5115`	`5115`	`else`
`5116`		`- val = "unset";`
	`5116`	`+ val = "";`
`5117`	`5117`	`}`
`5118`	`5118`	`break;`
`5119`	`5119`