Fix various typos in code and tests

Most of these are recent, and the documentation portions are new as of
v16 so there is no need for a backpatch.

Author: Justin Pryzby
Discussion: https://postgr.es/m/20230208155644.GM1653@telsasoft.com

contrib/postgres_fdw/deparse.c

@@ -2412,7 +2412,7 @@ deparseAnalyzeInfoSql(StringInfo buf, Relation rel)
  *
  * We could also do "ORDER BY random() LIMIT x", which would always pick
  * the expected number of rows, but it requires sorting so it may be much
- * more expensive (particularly on large tables, which is what what the
+ * more expensive (particularly on large tables, which is what the
  * remote sampling is meant to improve).
  */
 void

doc/src/sgml/config.sgml

@@ -718,7 +718,7 @@ include_dir 'conf.d'
        <para>
         Determines the number of connection <quote>slots</quote> that are
         reserved for connections by roles with privileges of the
-        <link linkend="predefined-roles-table"><literal>pg_used_reserved_connections</literal></link>
+        <link linkend="predefined-roles-table"><literal>pg_use_reserved_connections</literal></link>
         role.  Whenever the number of free connection slots is greater than
         <xref linkend="guc-superuser-reserved-connections"/> but less than or
         equal to the sum of <varname>superuser_reserved_connections</varname>

doc/src/sgml/ref/create_database.sgml

@@ -89,7 +89,7 @@ CREATE DATABASE <replaceable class="parameter">name</replaceable>
         The role name of the user who will own the new database,
         or <literal>DEFAULT</literal> to use the default (namely, the
         user executing the command).  To create a database owned by another
-        role, you must must be able to <literal>SET ROLE</literal> to that
+        role, you must be able to <literal>SET ROLE</literal> to that
         role.
        </para>
       </listitem>

doc/src/sgml/ref/create_schema.sgml

@@ -89,7 +89,7 @@ CREATE SCHEMA IF NOT EXISTS AUTHORIZATION <replaceable class="parameter">role_sp
        <para>
         The role name of the user who will own the new schema.  If omitted,
         defaults to the user executing the command.  To create a schema
-        owned by another role, you must must be able to
+        owned by another role, you must be able to
         <literal>SET ROLE</literal> to that role.
        </para>
       </listitem>

src/backend/commands/dbcommands.c

@@ -3090,7 +3090,7 @@ dbase_redo(XLogReaderState *record)
 
 		/*
 		 * There's a case where the copy source directory is missing for the
-		 * same reason above.  Create the emtpy source directory so that
+		 * same reason above.  Create the empty source directory so that
 		 * copydir below doesn't fail.  The directory will be dropped soon by
 		 * recovery.
 		 */

src/backend/executor/execMain.c

@@ -134,7 +134,7 @@ ExecutorStart(QueryDesc *queryDesc, int eflags)
 	/*
 	 * In some cases (e.g. an EXECUTE statement) a query execution will skip
 	 * parse analysis, which means that the query_id won't be reported.  Note
-	 * that it's harmless to report the query_id multiple time, as the call
+	 * that it's harmless to report the query_id multiple times, as the call
 	 * will be ignored if the top level query_id has already been reported.
 	 */
 	pgstat_report_query_id(queryDesc->plannedstmt->queryId, false);

src/backend/jit/llvm/llvmjit_inline.cpp

@@ -753,7 +753,7 @@ function_inlinable(llvm::Function &F,
 		/* import referenced function itself */
 		importVars.insert(referencedFunction->getName());
 
-		/* import referenced function and its dependants */
+		/* import referenced function and its dependents */
 		for (auto& recImportVar : recImportVars)
 			importVars.insert(recImportVar.first());
 	}

src/backend/replication/logical/snapbuild.c

@@ -1816,7 +1816,7 @@ SnapBuildSerialize(SnapBuild *builder, XLogRecPtr lsn)
 	fsync_fname("pg_logical/snapshots", true);
 
 	/*
-	 * Now there's no way we can loose the dumped state anymore, remember this
+	 * Now there's no way we can lose the dumped state anymore, remember this
 	 * as a serialization point.
 	 */
 	builder->last_serialized_snapshot = lsn;

src/backend/replication/walsender.c

@@ -2050,9 +2050,9 @@ PhysicalConfirmReceivedLocation(XLogRecPtr lsn)
 
 	/*
 	 * One could argue that the slot should be saved to disk now, but that'd
-	 * be energy wasted - the worst lost information can do here is give us
-	 * wrong information in a statistics view - we'll just potentially be more
-	 * conservative in removing files.
+	 * be energy wasted - the worst thing lost information could cause here is
+	 * to give wrong information in a statistics view - we'll just potentially
+	 * be more conservative in removing files.
 	 */
 }
 

src/bin/pg_basebackup/pg_basebackup.c

@@ -2015,8 +2015,9 @@ BaseBackup(char *compression_algorithm, char *compression_detail,
 			 * If we write the data out to a tar file, it will be named
 			 * base.tar if it's the main data directory or <tablespaceoid>.tar
 			 * if it's for another tablespace. CreateBackupStreamer() will
-			 * arrange to add .gz to the archive name if pg_basebackup is
-			 * performing compression.
+			 * arrange to add an extension to the archive name if
+			 * pg_basebackup is performing compression, depending on the
+			 * compression type.
 			 */
 			if (PQgetisnull(res, i, 0))
 			{

src/bin/pg_dump/pg_backup_custom.c

@@ -99,7 +99,7 @@ static size_t _CustomReadFunc(ArchiveHandle *AH, char **buf, size_t *buflen);
  *	It's task is to create any extra archive context (using AH->formatData),
  *	and to initialize the supported function pointers.
  *
- *	It should also prepare whatever it's input source is for reading/writing,
+ *	It should also prepare whatever its input source is for reading/writing,
  *	and in the case of a read mode connection, it should load the Header & TOC.
  */
 void

src/bin/pg_dump/pg_dumpall.c

@@ -995,7 +995,7 @@ dumpRoleMembership(PGconn *conn)
 		fprintf(OPF, "--\n-- Role memberships\n--\n\n");
 
 	/*
-	 * We can't dump these GRANT commands in arbitary order, because a role
+	 * We can't dump these GRANT commands in arbitrary order, because a role
 	 * that is named as a grantor must already have ADMIN OPTION on the
 	 * role for which it is granting permissions, except for the boostrap
 	 * superuser, who can always be named as the grantor.

src/include/lib/ilist.h

@@ -39,7 +39,7 @@
  * operations that can be done without branches (and thus faster) on lists
  * that use circular representation.  However, it is often convenient to
  * initialize list headers to zeroes rather than setting them up with an
- * explicit initialization function, so we also allow the NULL initalization.
+ * explicit initialization function, so we also allow the NULL initialization.
  *
  * EXAMPLES
  *

src/include/partitioning/partdesc.h

@@ -31,7 +31,7 @@ typedef struct PartitionDescData
 	int			nparts;			/* Number of partitions */
 	bool		detached_exist; /* Are there any detached partitions? */
 	Oid		   *oids;			/* Array of 'nparts' elements containing
-								 * partition OIDs in order of the their bounds */
+								 * partition OIDs in order of their bounds */
 	bool	   *is_leaf;		/* Array of 'nparts' elements storing whether
 								 * the corresponding 'oids' element belongs to
 								 * a leaf partition or not */

src/include/port/simd.h

@@ -345,7 +345,7 @@ vector8_ssub(const Vector8 v1, const Vector8 v2)
 #endif							/* ! USE_NO_SIMD */
 
 /*
- * Return a vector with all bits set in each lane where the the corresponding
+ * Return a vector with all bits set in each lane where the corresponding
  * lanes in the inputs are equal.
  */
 #ifndef USE_NO_SIMD

src/test/regress/expected/alter_table.out

@@ -2566,7 +2566,7 @@ select * from at_view_2;
 drop view at_view_2;
 drop view at_view_1;
 drop table at_base_table;
--- check adding a column not iself requiring a rewrite, together with
+-- check adding a column not itself requiring a rewrite, together with
 -- a column requiring a default (bug #16038)
 -- ensure that rewrites aren't silently optimized away, removing the
 -- value of the test

src/test/regress/expected/create_procedure.out

@@ -100,7 +100,7 @@ SELECT * FROM cp_test ORDER BY b COLLATE "C";
  1 | xyzzy
 (4 rows)
 
--- utitlity functions currently not supported here
+-- utility functions currently not supported here
 CREATE PROCEDURE ptestx()
 LANGUAGE SQL
 BEGIN ATOMIC

src/test/regress/sql/alter_table.sql

@@ -1635,7 +1635,7 @@ drop view at_view_2;
 drop view at_view_1;
 drop table at_base_table;
 
--- check adding a column not iself requiring a rewrite, together with
+-- check adding a column not itself requiring a rewrite, together with
 -- a column requiring a default (bug #16038)
 
 -- ensure that rewrites aren't silently optimized away, removing the

src/test/regress/sql/create_procedure.sql

@@ -42,7 +42,7 @@ CALL ptest1s('b');
 
 SELECT * FROM cp_test ORDER BY b COLLATE "C";
 
--- utitlity functions currently not supported here
+-- utility functions currently not supported here
 CREATE PROCEDURE ptestx()
 LANGUAGE SQL
 BEGIN ATOMIC

src/test/subscription/t/031_column_list.pl

@@ -1034,7 +1034,7 @@ is( $node_subscriber->safe_psql('postgres', "SELECT * FROM s1.t ORDER BY a"),
 4|5|6),
 	'two publications, publishing the same relation');
 
-# Now resync the subcription, but with publications in the opposite order.
+# Now resync the subscription, but with publications in the opposite order.
 # The result should be the same.
 
 $node_subscriber->safe_psql(