Improve some messages

src/backend/access/transam/commit_ts.c

@@ -384,7 +384,7 @@ error_commit_ts_disabled(void)
 			(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
 			 errmsg("could not get commit timestamp data"),
 			 RecoveryInProgress() ?
-			 errhint("Make sure the configuration parameter \"%s\" is set in the master server.",
+			 errhint("Make sure the configuration parameter \"%s\" is set on the master server.",
 					 "track_commit_timestamp") :
 			 errhint("Make sure the configuration parameter \"%s\" is set.",
 					 "track_commit_timestamp")));

src/backend/catalog/objectaddress.c

@@ -1901,7 +1901,7 @@ pg_get_object_address(PG_FUNCTION_ARGS)
 		if (list_length(name) < 1)
 			ereport(ERROR,
 					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-					 errmsg("name list must be of length at least %d", 1)));
+					 errmsg("name list length must be at least %d", 1)));
 	}
 
 	/*

src/backend/commands/policy.c

@@ -167,8 +167,8 @@ policy_role_list_to_array(List *roles, int *num_roles)
 			{
 				ereport(WARNING,
 						(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-						 errmsg("ignoring roles specified other than public"),
-					  errhint("All roles are members of the public role.")));
+						 errmsg("ignoring specified roles other than PUBLIC"),
+					  errhint("All roles are members of the PUBLIC role.")));
 				*num_roles = 1;
 			}
 			role_oids[0] = ObjectIdGetDatum(ACL_ID_PUBLIC);

src/backend/commands/user.c

@@ -959,7 +959,7 @@ DropRole(DropRoleStmt *stmt)
 		if (rolspec->roletype != ROLESPEC_CSTRING)
 			ereport(ERROR,
 					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-					 errmsg("cannot use special role specifier in \"%s\"", "DROP ROLE")));
+					 errmsg("cannot use special role specifier in DROP ROLE")));
 		role = rolspec->rolename;
 
 		tuple = SearchSysCache1(AUTHNAME, PointerGetDatum(role));

src/backend/executor/nodeCustom.c

@@ -144,7 +144,7 @@ ExecCustomMarkPos(CustomScanState *node)
 	if (!node->methods->MarkPosCustomScan)
 		ereport(ERROR,
 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-				 errmsg("custom-scan \"%s\" does not support MarkPos",
+				 errmsg("custom scan \"%s\" does not support MarkPos",
 						node->methods->CustomName)));
 	node->methods->MarkPosCustomScan(node);
 }
@@ -155,7 +155,7 @@ ExecCustomRestrPos(CustomScanState *node)
 	if (!node->methods->RestrPosCustomScan)
 		ereport(ERROR,
 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-				 errmsg("custom-scan \"%s\" does not support MarkPos",
+				 errmsg("custom scan \"%s\" does not support MarkPos",
 						node->methods->CustomName)));
 	node->methods->RestrPosCustomScan(node);
 }

src/backend/utils/adt/jsonb.c

@@ -1238,7 +1238,7 @@ jsonb_build_object(PG_FUNCTION_ARGS)
 		if (val_type == InvalidOid || val_type == UNKNOWNOID)
 			ereport(ERROR,
 					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-					 errmsg("arg %d: could not determine data type", i + 2)));
+					 errmsg("argument %d: could not determine data type", i + 2)));
 		add_jsonb(arg, PG_ARGISNULL(i + 1), &result, val_type, false);
 
 	}
@@ -1300,7 +1300,7 @@ jsonb_build_array(PG_FUNCTION_ARGS)
 		if (val_type == InvalidOid || val_type == UNKNOWNOID)
 			ereport(ERROR,
 					(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-					 errmsg("arg %d: could not determine data type", i + 1)));
+					 errmsg("argument %d: could not determine data type", i + 1)));
 		add_jsonb(arg, PG_ARGISNULL(i), &result, val_type, false);
 	}
 

src/backend/utils/adt/jsonfuncs.c

@@ -3464,7 +3464,7 @@ jsonb_delete_idx(PG_FUNCTION_ARGS)
 	if (JB_ROOT_IS_OBJECT(in))
 		ereport(ERROR,
 				(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-				 errmsg("cannot delete from object using integer subscript")));
+				 errmsg("cannot delete from object using integer index")));
 
 	if (JB_ROOT_COUNT(in) == 0)
 		PG_RETURN_JSONB(in);

src/test/regress/expected/jsonb.out

@@ -3173,7 +3173,7 @@ select '[]'::jsonb - 'a';
 select '"a"'::jsonb - 1; -- error
 ERROR:  cannot delete from scalar
 select '{}'::jsonb -  1; -- error
-ERROR:  cannot delete from object using integer subscript
+ERROR:  cannot delete from object using integer index
 select '[]'::jsonb - 1;
  ?column? 
 ----------

src/test/regress/expected/object_address.out

@@ -39,7 +39,7 @@ CREATE TRANSFORM FOR int LANGUAGE SQL (
 SELECT pg_get_object_address('stone', '{}', '{}');
 ERROR:  unrecognized object type "stone"
 SELECT pg_get_object_address('table', '{}', '{}');
-ERROR:  name list must be of length at least 1
+ERROR:  name list length must be at least 1
 SELECT pg_get_object_address('table', '{NULL}', '{}');
 ERROR:  name or argument lists may not contain nulls
 -- unrecognized object types