Message style improvements

src/backend/parser/parse_utilcmd.c

@@ -672,7 +672,7 @@ transformTableLikeClause(CreateStmtContext *cxt, TableLikeClause *table_like_cla
 	if (cxt->isforeign)
 		ereport(ERROR,
 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-				 errmsg("LIKE is not supported for foreign tables")));
+				 errmsg("LIKE is not supported for creating foreign tables")));
 
 	relation = relation_openrv(table_like_clause->relation, AccessShareLock);
 

src/backend/port/sysv_shmem.c

@@ -174,7 +174,7 @@ InternalIpcMemoryCreate(IpcMemoryKey memKey, Size size)
 						 "memory configuration.") : 0,
 				 (errno == ENOMEM) ?
 				 errhint("This error usually means that PostgreSQL's request for a shared "
-						 "memory segment exceeded your kernel's SHMALL parameter.  You may need "
+						 "memory segment exceeded your kernel's SHMALL parameter.  You might need "
 						 "to reconfigure the kernel with larger SHMALL.\n"
 		"The PostgreSQL documentation contains more information about shared "
 						 "memory configuration.") : 0,

src/backend/postmaster/bgworker.c

@@ -255,7 +255,7 @@ BackgroundWorkerStateChange(void)
 
 		/* Log it! */
 		ereport(LOG,
-				(errmsg("registering background worker: %s",
+				(errmsg("registering background worker \"%s\"",
 					rw->rw_worker.bgw_name)));
 
 		slist_push_head(&BackgroundWorkerList, &rw->rw_lnode);
@@ -284,7 +284,7 @@ ForgetBackgroundWorker(slist_mutable_iter *cur)
 	slot->in_use = false;
 
 	ereport(LOG,
-			(errmsg("unregistering background worker: %s",
+			(errmsg("unregistering background worker \"%s\"",
 				rw->rw_worker.bgw_name)));
 
 	slist_delete_current(cur);
@@ -368,7 +368,7 @@ RegisterBackgroundWorker(BackgroundWorker *worker)
 
 	if (!IsUnderPostmaster)
 		ereport(LOG,
-			(errmsg("registering background worker: %s", worker->bgw_name)));
+			(errmsg("registering background worker \"%s\"", worker->bgw_name)));
 
 	if (!process_shared_preload_libraries_in_progress)
 	{

src/backend/postmaster/postmaster.c

@@ -5224,7 +5224,7 @@ BackgroundWorkerInitializeConnection(char *dbname, char *username)
 	/* it had better not gotten out of "init" mode yet */
 	if (!IsInitProcessingMode())
 		ereport(ERROR,
-				(errmsg("invalid processing mode in bgworker")));
+				(errmsg("invalid processing mode in background worker")));
 	SetProcessingMode(NormalProcessing);
 }
 

src/backend/utils/adt/jsonfuncs.c

@@ -1836,7 +1836,7 @@ populate_recordset_array_element_start(void *state, bool isnull)
 		_state->lex->token_type != JSON_TOKEN_OBJECT_START)
 		ereport(ERROR,
 				(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
-			 errmsg("must call populate_recordset on an array of objects")));
+			 errmsg("must call json_populate_recordset on an array of objects")));
 }
 
 static void

src/backend/utils/misc/guc.c

@@ -1607,7 +1607,7 @@ static struct config_int ConfigureNamesInt[] =
 
 	{
 		{"wal_receiver_timeout", PGC_SIGHUP, REPLICATION_STANDBY,
-			gettext_noop("Sets the maximum wait time to receive data from master."),
+			gettext_noop("Sets the maximum wait time to receive data from the primary."),
 			NULL,
 			GUC_UNIT_MS
 		},