Remove tabs after spaces in C comments

This was not changed in HEAD, but will be done later as part of a
pgindent run.  Future pgindent runs will also do this.

Report by Tom Lane

Backpatch through all supported branches, but not HEAD

contrib/pg_upgrade/controldata.c

@@ -27,7 +27,7 @@
  * pg_control data.  pg_resetxlog cannot be run while the server is running
  * so we use pg_controldata;  pg_controldata doesn't provide all the fields
  * we need to actually perform the upgrade, but it provides enough for
- * check mode.	We do not implement pg_resetxlog -n because it is hard to
+ * check mode.  We do not implement pg_resetxlog -n because it is hard to
  * return valid xid data for a running server.
  */
 void

contrib/pg_upgrade/dump.c

@@ -34,7 +34,7 @@ generate_old_dump(void)
 
 	/*
 	 * Set umask for this function, all functions it calls, and all
-	 * subprocesses/threads it creates.	 We can't use fopen_priv()
+	 * subprocesses/threads it creates.  We can't use fopen_priv()
 	 * as Windows uses threads and umask is process-global.
 	 */
 	old_umask = umask(S_IRWXG | S_IRWXO);

contrib/pg_upgrade/exec.c

@@ -159,7 +159,7 @@ static DWORD       mainThreadId = 0;
 	 * We can't do this on Windows because it will keep the "pg_ctl start"
 	 * output filename open until the server stops, so we do the \n\n above on
 	 * that platform.  We use a unique filename for "pg_ctl start" that is
-	 * never reused while the server is running, so it works fine.	We could
+	 * never reused while the server is running, so it works fine.  We could
 	 * log these commands to a third file, but that just adds complexity.
 	 */
 	if ((log = fopen(log_file, "a")) == NULL)
@@ -240,7 +240,7 @@ win32_check_directory_write_permissions(void)
 	int			fd;
 
 	/*
-	 * We open a file we would normally create anyway.	We do this even in
+	 * We open a file we would normally create anyway.  We do this even in
 	 * 'check' mode, which isn't ideal, but this is the best we can do.
 	 */
 	if ((fd = open(GLOBALS_DUMP_FILE, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR)) < 0)
@@ -257,7 +257,7 @@ win32_check_directory_write_permissions(void)
  *
  *	This function validates the given cluster directory - we search for a
  *	small set of subdirectories that we expect to find in a valid $PGDATA
- *	directory.	If any of the subdirectories are missing (or secured against
+ *	directory.  If any of the subdirectories are missing (or secured against
  *	us) we display an error message and exit()
  *
  */
@@ -297,7 +297,7 @@ check_data_dir(const char *pg_data)
  * check_bin_dir()
  *
  *	This function searches for the executables that we expect to find
- *	in the binaries directory.	If we find that a required executable
+ *	in the binaries directory.  If we find that a required executable
  *	is missing (or secured against us), we display an error message and
  *	exit().
  */

contrib/pg_upgrade/function.c

@@ -297,7 +297,7 @@ check_loadable_libraries(void)
 		 * plpython2u language was created with library name plpython2.so as a
 		 * symbolic link to plpython.so.  In Postgres 9.1, only the
 		 * plpython2.so library was created, and both plpythonu and plpython2u
-		 * pointing to it.	For this reason, any reference to library name
+		 * pointing to it.  For this reason, any reference to library name
 		 * "plpython" in an old PG <= 9.1 cluster must look for "plpython2" in
 		 * the new cluster.
 		 *

contrib/pg_upgrade/option.c

@@ -363,7 +363,7 @@ adjust_data_dir(ClusterInfo *cluster)
 
 	/*
 	 * We don't have a data directory yet, so we can't check the PG version,
-	 * so this might fail --- only works for PG 9.2+.	If this fails,
+	 * so this might fail --- only works for PG 9.2+.   If this fails,
 	 * pg_upgrade will fail anyway because the data files will not be found.
 	 */
 	snprintf(cmd, sizeof(cmd), "\"%s/postmaster\" -D \"%s\" -C data_directory",

contrib/pg_upgrade/page.c

@@ -30,7 +30,7 @@ static pageCnvCtx *loadConverterPlugin(
  *	the PageLayoutVersion of the new cluster.  If the versions differ, this
  *	function loads a converter plugin and returns a pointer to a pageCnvCtx
  *	object (in *result) that knows how to convert pages from the old format
- *	to the new format.	If the versions are identical, this function just
+ *	to the new format.  If the versions are identical, this function just
  *	returns a NULL pageCnvCtx pointer to indicate that page-by-page conversion
  *	is not required.
  */
@@ -110,7 +110,7 @@ getPageVersion(uint16 *version, const char *pathName)
  *	This function loads a page-converter plugin library and grabs a
  *	pointer to each of the (interesting) functions provided by that
  *	plugin.  The name of the plugin library is derived from the given
- *	newPageVersion and oldPageVersion.	If a plugin is found, this
+ *	newPageVersion and oldPageVersion.  If a plugin is found, this
  *	function returns a pointer to a pageCnvCtx object (which will contain
  *	a collection of plugin function pointers). If the required plugin
  *	is not found, this function returns NULL.

contrib/pg_upgrade/pg_upgrade.c

@@ -18,7 +18,7 @@
  *	FYI, while pg_class.oid and pg_class.relfilenode are initially the same
  *	in a cluster, but they can diverge due to CLUSTER, REINDEX, or VACUUM
  *	FULL.  The new cluster will have matching pg_class.oid and
- *	pg_class.relfilenode values and be based on the old oid value.	This can
+ *	pg_class.relfilenode values and be based on the old oid value.  This can
  *	cause the old and new pg_class.relfilenode values to differ.  In summary,
  *	old and new pg_class.oid and new pg_class.relfilenode will have the
  *	same value, and old pg_class.relfilenode might differ.
@@ -126,7 +126,7 @@ main(int argc, char **argv)
 
 	/*
 	 * Most failures happen in create_new_objects(), which has completed at
-	 * this point.	We do this here because it is just before linking, which
+	 * this point.  We do this here because it is just before linking, which
 	 * will link the old and new cluster data files, preventing the old
 	 * cluster from being safely started once the new cluster is started.
 	 */
@@ -194,7 +194,7 @@ setup(char *argv0, bool *live_check)
 	{
 		/*
 		 * If we have a postmaster.pid file, try to start the server.  If it
-		 * starts, the pid file was stale, so stop the server.	If it doesn't
+		 * starts, the pid file was stale, so stop the server.  If it doesn't
 		 * start, assume the server is running.  If the pid file is left over
 		 * from a server crash, this also allows any committed transactions
 		 * stored in the WAL to be replayed so they are not lost, because WAL
@@ -280,8 +280,8 @@ prepare_new_databases(void)
 
 	/*
 	 * Install support functions in the global-object restore database to
-	 * preserve pg_authid.oid.	pg_dumpall uses 'template0' as its template
-	 * database so objects we add into 'template1' are not propogated.	They
+	 * preserve pg_authid.oid.  pg_dumpall uses 'template0' as its template
+	 * database so objects we add into 'template1' are not propogated.  They
 	 * are removed on pg_upgrade exit.
 	 */
 	install_support_functions_in_new_db("template1");

contrib/pg_upgrade/relfilenode.c

@@ -37,7 +37,7 @@ transfer_all_new_tablespaces(DbInfoArr *old_db_arr, DbInfoArr *new_db_arr,
 	/*
 	 * Transfering files by tablespace is tricky because a single database can
 	 * use multiple tablespaces.  For non-parallel mode, we just pass a NULL
-	 * tablespace path, which matches all tablespaces.	In parallel mode, we
+	 * tablespace path, which matches all tablespaces.  In parallel mode, we
 	 * pass the default tablespace and all user-created tablespaces and let
 	 * those operations happen in parallel.
 	 */
@@ -135,7 +135,7 @@ transfer_all_new_dbs(DbInfoArr *old_db_arr, DbInfoArr *new_db_arr,
 /*
  * get_pg_database_relfilenode()
  *
- *	Retrieves the relfilenode for a few system-catalog tables.	We need these
+ *	Retrieves the relfilenode for a few system-catalog tables.  We need these
  *	relfilenodes later in the upgrade process.
  */
 void

contrib/pg_upgrade/util.c

@@ -263,7 +263,7 @@ pg_putenv(const char *var, const char *val)
 
 		/*
 		 * Do not free envstr because it becomes part of the environment on
-		 * some operating systems.	See port/unsetenv.c::unsetenv.
+		 * some operating systems.  See port/unsetenv.c::unsetenv.
 		 */
 #else
 		SetEnvironmentVariableA(var, val);