Message style improvements

src/backend/commands/typecmds.c

@@ -495,7 +495,7 @@ DefineType(ParseState *pstate, List *names, List *parameters)
 		analyzeOid = findTypeAnalyzeFunction(analyzeName, typoid);
 
 	/*
-	 * Likewise look up the subscripting procedure if any.  If it is not
+	 * Likewise look up the subscripting function if any.  If it is not
 	 * specified, but a typelem is specified, allow that if
 	 * raw_array_subscript_handler can be used.  (This is for backwards
 	 * compatibility; maybe someday we should throw an error instead.)
@@ -509,7 +509,7 @@ DefineType(ParseState *pstate, List *names, List *parameters)
 		else
 			ereport(ERROR,
 					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-					 errmsg("element type cannot be specified without a valid subscripting procedure")));
+					 errmsg("element type cannot be specified without a subscripting function")));
 	}
 
 	/*
@@ -837,7 +837,7 @@ DefineDomain(CreateDomainStmt *stmt)
 	analyzeProcedure = baseType->typanalyze;
 
 	/*
-	 * Domains don't need a subscript procedure, since they are not
+	 * Domains don't need a subscript function, since they are not
 	 * subscriptable on their own.  If the base type is subscriptable, the
 	 * parser will reduce the type to the base type before subscripting.
 	 */

src/backend/libpq/auth.c

@@ -357,8 +357,8 @@ set_authn_id(Port *port, const char *id)
 		 * connection continue, either.
 		 */
 		ereport(FATAL,
-				(errmsg("connection was re-authenticated"),
+				(errmsg("authentication identifier set more than once"),
-				 errdetail_log("previous ID: \"%s\"; new ID: \"%s\"",
+				 errdetail_log("previous identifier: \"%s\"; new identifier: \"%s\"",
 							   port->authn_id, id)));
 	}
 

src/backend/libpq/be-secure-openssl.c

@@ -1392,7 +1392,7 @@ X509_NAME_to_cstring(X509_NAME *name)
 	if (membuf == NULL)
 		ereport(ERROR,
 				(errcode(ERRCODE_OUT_OF_MEMORY),
-				 errmsg("failed to create BIO")));
+				 errmsg("could not create BIO")));
 
 	(void) BIO_set_close(membuf, BIO_CLOSE);
 	for (i = 0; i < count; i++)

src/backend/utils/adt/jsonbsubs.c

@@ -100,9 +100,8 @@ jsonb_subscript_transform(SubscriptingRef *sbsref,
 						if (targetType != UNKNOWNOID)
 							ereport(ERROR,
 									(errcode(ERRCODE_DATATYPE_MISMATCH),
-									 errmsg("subscript type is not supported"),
+									 errmsg("subscript type %s is not supported", format_type_be(subExprType)),
-									 errhint("Jsonb subscript must be coerced "
+									 errhint("jsonb subscript must be coercible to only one type, integer or text."),
-											 "only to one type, integer or text."),
 									 parser_errposition(pstate, exprLocation(subExpr))));
 
 						targetType = targets[i];
@@ -115,8 +114,8 @@ jsonb_subscript_transform(SubscriptingRef *sbsref,
 				if (targetType == UNKNOWNOID)
 					ereport(ERROR,
 							(errcode(ERRCODE_DATATYPE_MISMATCH),
-							 errmsg("subscript type is not supported"),
+							 errmsg("subscript type %s is not supported", format_type_be(subExprType)),
-							 errhint("Jsonb subscript must be coerced to either integer or text"),
+							 errhint("jsonb subscript must be coercible to either integer or text."),
 							 parser_errposition(pstate, exprLocation(subExpr))));
 			}
 			else

src/backend/utils/adt/multirangetypes.c

@@ -961,7 +961,7 @@ multirange_constructor2(PG_FUNCTION_ARGS)
 
 	if (PG_ARGISNULL(0))
 		elog(ERROR,
-			 "multirange values cannot contain NULL members");
+			 "multirange values cannot contain null members");
 
 	rangeArray = PG_GETARG_ARRAYTYPE_P(0);
 
@@ -973,9 +973,7 @@ multirange_constructor2(PG_FUNCTION_ARGS)
 
 	rngtypid = ARR_ELEMTYPE(rangeArray);
 	if (rngtypid != rangetyp->type_id)
-		ereport(ERROR,
+		elog(ERROR, "type %u does not match constructor type", rngtypid);
-				(errcode(ERRCODE_DATATYPE_MISMATCH),
-				 errmsg("type %u does not match constructor type", rngtypid)));
 
 	/*
 	 * Be careful: we can still be called with zero ranges, like this:
@@ -997,7 +995,7 @@ multirange_constructor2(PG_FUNCTION_ARGS)
 			if (nulls[i])
 				ereport(ERROR,
 						(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
-						 errmsg("multirange values cannot contain NULL members")));
+						 errmsg("multirange values cannot contain null members")));
 
 			/* make_multirange will do its own copy */
 			ranges[i] = DatumGetRangeTypeP(elements[i]);
@@ -1031,16 +1029,14 @@ multirange_constructor1(PG_FUNCTION_ARGS)
 
 	if (PG_ARGISNULL(0))
 		elog(ERROR,
-			 "multirange values cannot contain NULL members");
+			 "multirange values cannot contain null members");
 
 	range = PG_GETARG_RANGE_P(0);
 
 	/* Make sure the range type matches. */
 	rngtypid = RangeTypeGetOid(range);
 	if (rngtypid != rangetyp->type_id)
-		ereport(ERROR,
+		elog(ERROR, "type %u does not match constructor type", rngtypid);
-				(errcode(ERRCODE_DATATYPE_MISMATCH),
-				 errmsg("type %u does not match constructor type", rngtypid)));
 
 	PG_RETURN_MULTIRANGE_P(make_multirange(mltrngtypid, rangetyp, 1, &range));
 }

src/test/regress/expected/jsonb.out

@@ -4822,10 +4822,10 @@ select ('[1, "2", null]'::jsonb)['1'];
 (1 row)
 
 select ('[1, "2", null]'::jsonb)[1.0];
-ERROR:  subscript type is not supported
+ERROR:  subscript type numeric is not supported
 LINE 1: select ('[1, "2", null]'::jsonb)[1.0];
                                          ^
-HINT:  Jsonb subscript must be coerced to either integer or text
+HINT:  jsonb subscript must be coercible to either integer or text.
 select ('[1, "2", null]'::jsonb)[2];
  jsonb 
 -------