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

src/interfaces/ecpg/include/sqlca.h

@@ -40,7 +40,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/pgtypeslib/dt.h

@@ -255,7 +255,7 @@ do { \
  *	DAYS_PER_MONTH is very imprecise.  The more accurate value is
  *	365.2425/12 = 30.436875, or '30 days 10:29:06'.  Right now we only
  *	return an integral number of days, but someday perhaps we should
- *	also return a 'time' value to be used as well.	ISO 8601 suggests
+ *	also return a 'time' value to be used as well.  ISO 8601 suggests
  *	30 days.
  */
 #define DAYS_PER_MONTH	30		/* assumes exactly 30 days per month */

src/interfaces/ecpg/pgtypeslib/interval.c

@@ -160,7 +160,7 @@ DecodeISO8601Interval(char *str,
 			return dterr;
 
 		/*
-		 * Note: we could step off the end of the string here.	Code below
+		 * Note: we could step off the end of the string here.  Code below
 		 * *must* exit the loop if unit == '\0'.
 		 */
 		unit = *str++;

src/interfaces/ecpg/pgtypeslib/numeric.c

@@ -974,7 +974,7 @@ PGTYPESnumeric_sub(numeric *var1, numeric *var2, numeric *result)
  * mul_var() -
  *
  *	Multiplication on variable level. Product of var1 * var2 is stored
- *	in result.	Accuracy of result is determined by global_rscale.
+ *	in result.  Accuracy of result is determined by global_rscale.
  * ----------
  */
 int

src/interfaces/ecpg/preproc/c_keywords.c

@@ -57,7 +57,7 @@ static const ScanKeyword ScanCKeywords[] = {
 
 
 /*
- * Do a binary search using plain strcmp() comparison.	This is much like
+ * Do a binary search using plain strcmp() comparison.  This is much like
  * ScanKeywordLookup(), except we want case-sensitive matching.
  */
 const ScanKeyword *

src/interfaces/ecpg/preproc/parser.c

@@ -35,7 +35,7 @@ static YYLTYPE lookahead_yylloc;	/* yylloc for lookahead token */
  * Intermediate filter between parser and base lexer (base_yylex in scan.l).
  *
  * The filter is needed because in some cases the standard SQL grammar
- * requires more than one token lookahead.	We reduce these cases to one-token
+ * requires more than one token lookahead.  We reduce these cases to one-token
  * lookahead by combining tokens here, in order to keep the grammar LALR(1).
  *
  * Using a filter is simpler than trying to recognize multiword tokens

src/interfaces/ecpg/test/expected/compat_informix-test_informix2.c

@@ -57,7 +57,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/preproc-init.c

@@ -51,7 +51,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-array.c

@@ -59,7 +59,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-code100.c

@@ -51,7 +51,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-copystdout.c

@@ -53,7 +53,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-define.c

@@ -51,7 +51,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-dynalloc.c

@@ -52,7 +52,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-dynalloc2.c

@@ -52,7 +52,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-dyntest.c

@@ -105,7 +105,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/sql-indicators.c

@@ -53,7 +53,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/thread-alloc.c

@@ -74,7 +74,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/thread-descriptor.c

@@ -65,7 +65,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/ecpg/test/expected/thread-prep.c

@@ -74,7 +74,7 @@ struct sqlca_t
 	/* Element 0: set to 'W' if at least one other is 'W'	*/
 	/* 1: if 'W' at least one character string		*/
 	/* value was truncated when it was			*/
-	/* stored into a host variable.				*/
+	/* stored into a host variable.             */
 
 	/*
 	 * 2: if 'W' a (hopefully) non-fatal notice occurred

src/interfaces/libpq/fe-auth.c

@@ -1023,7 +1023,7 @@ pg_fe_getauthname(PQExpBuffer errorMessage)
  *
  * This is intended to be used by client applications that wish to send
  * commands like ALTER USER joe PASSWORD 'pwd'.  The password need not
- * be sent in cleartext if it is encrypted on the client side.	This is
+ * be sent in cleartext if it is encrypted on the client side.  This is
  * good because it ensures the cleartext password won't end up in logs,
  * pg_stat displays, etc.  We export the function so that clients won't
  * be dependent on low-level details like whether the enceyption is MD5

src/interfaces/libpq/fe-connect.c

@@ -134,7 +134,7 @@ static int ldapServiceLookup(const char *purl, PQconninfoOption *options,
  *
  * PQconninfoOptions[] is a constant static array that we use to initialize
  * a dynamically allocated working copy.  All the "val" fields in
- * PQconninfoOptions[] *must* be NULL.	In a working copy, non-null "val"
+ * PQconninfoOptions[] *must* be NULL.  In a working copy, non-null "val"
  * fields point to malloc'd strings that should be freed when the working
  * array is freed (see PQconninfoFree).
  *
@@ -389,7 +389,7 @@ pgthreadlock_t pg_g_threadlock = default_threadlock;
  *		pqDropConnection
  *
  * Close any physical connection to the server, and reset associated
- * state inside the connection object.	We don't release state that
+ * state inside the connection object.  We don't release state that
  * would be needed to reconnect, though.
  */
 void
@@ -544,7 +544,7 @@ PQping(const char *conninfo)
  * See comment for PQconnectdbParams for the definition of the string format.
  *
  * Returns a PGconn*.  If NULL is returned, a malloc error has occurred, and
- * you should not attempt to proceed with this connection.	If the status
+ * you should not attempt to proceed with this connection.  If the status
  * field of the connection returned is CONNECTION_BAD, an error has
  * occurred. In this case you should call PQfinish on the result, (perhaps
  * inspecting the error message first).  Other fields of the structure may not
@@ -619,7 +619,7 @@ PQconnectStartParams(const char *const * keywords,
  * See comment for PQconnectdb for the definition of the string format.
  *
  * Returns a PGconn*.  If NULL is returned, a malloc error has occurred, and
- * you should not attempt to proceed with this connection.	If the status
+ * you should not attempt to proceed with this connection.  If the status
  * field of the connection returned is CONNECTION_BAD, an error has
  * occurred. In this case you should call PQfinish on the result, (perhaps
  * inspecting the error message first).  Other fields of the structure may not
@@ -856,7 +856,7 @@ connectOptions2(PGconn *conn)
  * and their current default values.
  *
  * NOTE: as of PostgreSQL 7.0, the returned array is dynamically allocated
- * and should be freed when no longer needed via PQconninfoFree().	(In prior
+ * and should be freed when no longer needed via PQconninfoFree().  (In prior
  * versions, the returned array was static, but that's not thread-safe.)
  * Pre-7.0 applications that use this function will see a small memory leak
  * until they are updated to call PQconninfoFree.
@@ -1479,7 +1479,7 @@ connectDBComplete(PGconn *conn)
 	for (;;)
 	{
 		/*
-		 * Wait, if necessary.	Note that the initial state (just after
+		 * Wait, if necessary.  Note that the initial state (just after
 		 * PQconnectStart) is to wait for the socket to select for writing.
 		 */
 		switch (flag)
@@ -1541,7 +1541,7 @@ connectDBComplete(PGconn *conn)
  *		will not block.
  *	 o	If you do not supply an IP address for the remote host (i.e. you
  *		supply a host name instead) then PQconnectStart will block on
- *		gethostbyname.	You will be fine if using Unix sockets (i.e. by
+ *		gethostbyname.  You will be fine if using Unix sockets (i.e. by
  *		supplying neither a host name nor a host address).
  *	 o	If your backend wants to use Kerberos authentication then you must
  *		supply both a host name and a host address, otherwise this function
@@ -1824,7 +1824,7 @@ keep_going:						/* We will come back to here until there is
 					/*
 					 * This connection failed --- set up error report, then
 					 * close socket (do it this way in case close() affects
-					 * the value of errno...).	We will ignore the connect()
+					 * the value of errno...).  We will ignore the connect()
 					 * failure and keep going if there are more addresses.
 					 */
 					connectFailureMessage(conn, SOCK_ERRNO);
@@ -2112,7 +2112,7 @@ keep_going:						/* We will come back to here until there is
 					{
 						/*
 						 * Server failure of some sort, such as failure to
-						 * fork a backend process.	We need to process and
+						 * fork a backend process.  We need to process and
 						 * report the error message, which might be formatted
 						 * according to either protocol 2 or protocol 3.
 						 * Rather than duplicate the code for that, we flip
@@ -2493,7 +2493,7 @@ keep_going:						/* We will come back to here until there is
 						/*
 						 * If we tried to send application_name, check to see
 						 * if the error is about that --- pre-9.0 servers will
-						 * reject it at this stage of the process.	If so,
+						 * reject it at this stage of the process.  If so,
 						 * close the connection and retry without sending
 						 * application_name.  We could possibly get a false
 						 * SQLSTATE match here and retry uselessly, but there
@@ -2639,9 +2639,9 @@ internal_ping(PGconn *conn)
 
 	/*
 	 * If we failed to get any ERROR response from the postmaster, report
-	 * PQPING_NO_RESPONSE.	This result could be somewhat misleading for a
+	 * PQPING_NO_RESPONSE.  This result could be somewhat misleading for a
 	 * pre-7.4 server, since it won't send back a SQLSTATE, but those are long
-	 * out of support.	Another corner case where the server could return a
+	 * out of support.  Another corner case where the server could return a
 	 * failure without a SQLSTATE is fork failure, but NO_RESPONSE isn't
 	 * totally unreasonable for that anyway.  We expect that every other
 	 * failure case in a modern server will produce a report with a SQLSTATE.
@@ -2869,7 +2869,7 @@ freePGconn(PGconn *conn)
  *	 - properly close a connection to the backend
  *
  * This should reset or release all transient state, but NOT the connection
- * parameters.	On exit, the PGconn should be in condition to start a fresh
+ * parameters.  On exit, the PGconn should be in condition to start a fresh
  * connection with the same parameters (see PQreset()).
  */
 static void
@@ -2998,7 +2998,7 @@ PQreset(PGconn *conn)
 		if (connectDBStart(conn) && connectDBComplete(conn))
 		{
 			/*
-			 * Notify event procs of successful reset.	We treat an event proc
+			 * Notify event procs of successful reset.  We treat an event proc
 			 * failure as disabling the connection ... good idea?
 			 */
 			int			i;
@@ -3058,7 +3058,7 @@ PQresetPoll(PGconn *conn)
 		if (status == PGRES_POLLING_OK)
 		{
 			/*
-			 * Notify event procs of successful reset.	We treat an event proc
+			 * Notify event procs of successful reset.  We treat an event proc
 			 * failure as disabling the connection ... good idea?
 			 */
 			int			i;
@@ -3247,7 +3247,7 @@ cancel_errReturn:
  * Returns TRUE if able to send the cancel request, FALSE if not.
  *
  * On failure, an error message is stored in *errbuf, which must be of size
- * errbufsize (recommended size is 256 bytes).	*errbuf is not changed on
+ * errbufsize (recommended size is 256 bytes).  *errbuf is not changed on
  * success return.
  */
 int
@@ -4024,7 +4024,7 @@ parseServiceFile(const char *serviceFile,
  *		PQconninfoParse
  *
  * Parse a string like PQconnectdb() would do and return the
- * resulting connection options array.	NULL is returned on failure.
+ * resulting connection options array.  NULL is returned on failure.
  * The result contains only options specified directly in the string,
  * not any possible default values.
  *
@@ -4797,7 +4797,7 @@ cleanup:
  * Connection URI parameters parser routine
  *
  * If successful, returns true while connOptions is filled with parsed
- * parameters.	Otherwise, returns false and fills errorMessage appropriately.
+ * parameters.  Otherwise, returns false and fills errorMessage appropriately.
  *
  * Destructively modifies 'params' buffer.
  */

src/interfaces/libpq/fe-exec.c

@@ -94,7 +94,7 @@ static int	check_field_number(const PGresult *res, int field_num);
  * doesn't tell us up front how many tuples will be returned.)
  * All other subsidiary storage for a PGresult is kept in PGresult_data blocks
  * of size PGRESULT_DATA_BLOCKSIZE.  The overhead at the start of each block
- * is just a link to the next one, if any.	Free-space management info is
+ * is just a link to the next one, if any.  Free-space management info is
  * kept in the owning PGresult.
  * A query returning a small amount of data will thus require three malloc
  * calls: one for the PGresult, one for the tuples pointer array, and one
@@ -113,7 +113,7 @@ static int	check_field_number(const PGresult *res, int field_num);
  *	 blocks, instead of being crammed into a regular allocation block.
  * Requirements for correct function are:
  * PGRESULT_ALIGN_BOUNDARY must be a multiple of the alignment requirements
- *		of all machine data types.	(Currently this is set from configure
+ *		of all machine data types.  (Currently this is set from configure
  *		tests, so it should be OK automatically.)
  * PGRESULT_SEP_ALLOC_THRESHOLD + PGRESULT_BLOCK_OVERHEAD <=
  *			PGRESULT_DATA_BLOCKSIZE
@@ -268,10 +268,10 @@ PQsetResultAttrs(PGresult *res, int numAttributes, PGresAttDesc *attDescs)
  * Returns a deep copy of the provided 'src' PGresult, which cannot be NULL.
  * The 'flags' argument controls which portions of the result will or will
  * NOT be copied.  The created result is always put into the
- * PGRES_TUPLES_OK status.	The source result error message is not copied,
+ * PGRES_TUPLES_OK status.  The source result error message is not copied,
  * although cmdStatus is.
  *
- * To set custom attributes, use PQsetResultAttrs.	That function requires
+ * To set custom attributes, use PQsetResultAttrs.  That function requires
  * that there are no attrs contained in the result, so to use that
  * function you cannot use the PG_COPYRES_ATTRS or PG_COPYRES_TUPLES
  * options with this function.
@@ -299,7 +299,7 @@ PQcopyResult(const PGresult *src, int flags)
 	if (!dest)
 		return NULL;
 
-	/* Always copy these over.	Is cmdStatus really useful here? */
+	/* Always copy these over.  Is cmdStatus really useful here? */
 	dest->client_encoding = src->client_encoding;
 	strcpy(dest->cmdStatus, src->cmdStatus);
 
@@ -757,7 +757,7 @@ pqPrepareAsyncResult(PGconn *conn)
 	PGresult   *res;
 
 	/*
-	 * conn->result is the PGresult to return.	If it is NULL (which probably
+	 * conn->result is the PGresult to return.  If it is NULL (which probably
 	 * shouldn't happen) we assume there is an appropriate error message in
 	 * conn->errorMessage.
 	 */
@@ -778,7 +778,7 @@ pqPrepareAsyncResult(PGconn *conn)
 	/*
 	 * Replace conn->result with next_result, if any.  In the normal case
 	 * there isn't a next result and we're just dropping ownership of the
-	 * current result.	In single-row mode this restores the situation to what
+	 * current result.  In single-row mode this restores the situation to what
 	 * it was before we created the current single-row result.
 	 */
 	conn->result = conn->next_result;
@@ -1569,7 +1569,7 @@ pqHandleSendFailure(PGconn *conn)
 		 /* loop until no more data readable */ ;
 
 	/*
-	 * Parse any available input messages.	Since we are in PGASYNC_IDLE
+	 * Parse any available input messages.  Since we are in PGASYNC_IDLE
 	 * state, only NOTICE and NOTIFY messages will be eaten.
 	 */
 	parseInput(conn);
@@ -1789,7 +1789,7 @@ getCopyResult(PGconn *conn, ExecStatusType copytype)
 	 * If the server connection has been lost, don't pretend everything is
 	 * hunky-dory; instead return a PGRES_FATAL_ERROR result, and reset the
 	 * asyncStatus to idle (corresponding to what we'd do if we'd detected I/O
-	 * error in the earlier steps in PQgetResult).	The text returned in the
+	 * error in the earlier steps in PQgetResult).  The text returned in the
 	 * result is whatever is in conn->errorMessage; we hope that was filled
 	 * with something relevant when the lost connection was detected.
 	 */
@@ -2031,7 +2031,7 @@ PQexecFinish(PGconn *conn)
  * If the query was not even sent, return NULL; conn->errorMessage is set to
  * a relevant message.
  * If the query was sent, a new PGresult is returned (which could indicate
- * either success or failure).	On success, the PGresult contains status
+ * either success or failure).  On success, the PGresult contains status
  * PGRES_COMMAND_OK, and its parameter and column-heading fields describe
  * the statement's inputs and outputs respectively.
  * The user is responsible for freeing the PGresult via PQclear()
@@ -2374,7 +2374,7 @@ PQgetCopyData(PGconn *conn, char **buffer, int async)
  * PQgetline - gets a newline-terminated string from the backend.
  *
  * Chiefly here so that applications can use "COPY <rel> to stdout"
- * and read the output string.	Returns a null-terminated string in s.
+ * and read the output string.  Returns a null-terminated string in s.
  *
  * XXX this routine is now deprecated, because it can't handle binary data.
  * If called during a COPY BINARY we return EOF.
@@ -2488,7 +2488,7 @@ PQputnbytes(PGconn *conn, const char *buffer, int nbytes)
  *		the application must call this routine to finish the command protocol.
  *
  * When using protocol 3.0 this is deprecated; it's cleaner to use PQgetResult
- * to get the transfer status.	Note however that when using 2.0 protocol,
+ * to get the transfer status.  Note however that when using 2.0 protocol,
  * recovering from a copy failure often requires a PQreset.  PQendcopy will
  * take care of that, PQgetResult won't.
  *
@@ -2716,7 +2716,7 @@ PQfname(const PGresult *res, int field_num)
  * downcasing in the frontend might follow different locale rules than
  * downcasing in the backend...
  *
- * Returns -1 if no match.	In the present backend it is also possible
+ * Returns -1 if no match.  In the present backend it is also possible
  * to have multiple matches, in which case the first one is found.
  */
 int
@@ -3127,7 +3127,7 @@ PQfreemem(void *ptr)
  *
  * This function is here only for binary backward compatibility.
  * New code should use PQfreemem().  A macro will automatically map
- * calls to PQfreemem.	It should be removed in the future.  bjm 2003-03-24
+ * calls to PQfreemem.  It should be removed in the future.  bjm 2003-03-24
  */
 
 #undef PQfreeNotify
@@ -3322,7 +3322,7 @@ PQescapeInternal(PGconn *conn, const char *str, size_t len, bool as_ident)
 	/*
 	 * If we are escaping a literal that contains backslashes, we use the
 	 * escape string syntax so that the result is correct under either value
-	 * of standard_conforming_strings.	We also emit a leading space in this
+	 * of standard_conforming_strings.  We also emit a leading space in this
 	 * case, to guard against the possibility that the result might be
 	 * interpolated immediately following an identifier.
 	 */

src/interfaces/libpq/fe-lobj.c

@@ -899,7 +899,7 @@ lo_initialize(PGconn *conn)
 	MemSet((char *) lobjfuncs, 0, sizeof(PGlobjfuncs));
 
 	/*
-	 * Execute the query to get all the functions at once.	In 7.3 and later
+	 * Execute the query to get all the functions at once.  In 7.3 and later
 	 * we need to be schema-safe.  lo_create only exists in 8.1 and up.
 	 * lo_truncate only exists in 8.3 and up.
 	 */

src/interfaces/libpq/fe-misc.c

@@ -681,13 +681,13 @@ retry3:
 		/*
 		 * Hack to deal with the fact that some kernels will only give us back
 		 * 1 packet per recv() call, even if we asked for more and there is
-		 * more available.	If it looks like we are reading a long message,
+		 * more available.  If it looks like we are reading a long message,
 		 * loop back to recv() again immediately, until we run out of data or
 		 * buffer space.  Without this, the block-and-restart behavior of
 		 * libpq's higher levels leads to O(N^2) performance on long messages.
 		 *
 		 * Since we left-justified the data above, conn->inEnd gives the
-		 * amount of data already read in the current message.	We consider
+		 * amount of data already read in the current message.  We consider
 		 * the message "long" once we have acquired 32k ...
 		 */
 		if (conn->inEnd > 32768 &&

src/interfaces/libpq/fe-protocol2.c

@@ -231,7 +231,7 @@ pqSetenvPoll(PGconn *conn)
 			case SETENV_STATE_QUERY1_SEND:
 				{
 					/*
-					 * Issue query to get information we need.	Here we must
+					 * Issue query to get information we need.  Here we must
 					 * use begin/commit in case autocommit is off by default
 					 * in a 7.3 server.
 					 *
@@ -725,7 +725,7 @@ getRowDescriptions(PGconn *conn)
 advance_and_error:
 
 	/*
-	 * Discard the failed message.	Unfortunately we don't know for sure where
+	 * Discard the failed message.  Unfortunately we don't know for sure where
 	 * the end is, so just throw away everything in the input buffer. This is
 	 * not very desirable but it's the best we can do in protocol v2.
 	 */
@@ -898,7 +898,7 @@ getAnotherTuple(PGconn *conn, bool binary)
 advance_and_error:
 
 	/*
-	 * Discard the failed message.	Unfortunately we don't know for sure where
+	 * Discard the failed message.  Unfortunately we don't know for sure where
 	 * the end is, so just throw away everything in the input buffer. This is
 	 * not very desirable but it's the best we can do in protocol v2.
 	 */
@@ -954,7 +954,7 @@ pqGetErrorNotice2(PGconn *conn, bool isError)
 
 	/*
 	 * Since the message might be pretty long, we create a temporary
-	 * PQExpBuffer rather than using conn->workBuffer.	workBuffer is intended
+	 * PQExpBuffer rather than using conn->workBuffer.  workBuffer is intended
 	 * for stuff that is expected to be short.
 	 */
 	initPQExpBuffer(&workBuf);
@@ -1048,10 +1048,10 @@ failure:
 /*
  * checkXactStatus - attempt to track transaction-block status of server
  *
- * This is called each time we receive a command-complete message.	By
+ * This is called each time we receive a command-complete message.  By
  * watching for messages from BEGIN/COMMIT/ROLLBACK commands, we can do
  * a passable job of tracking the server's xact status.  BUT: this does
- * not work at all on 7.3 servers with AUTOCOMMIT OFF.	(Man, was that
+ * not work at all on 7.3 servers with AUTOCOMMIT OFF.  (Man, was that
  * feature ever a mistake.)  Caveat user.
  *
  * The tags known here are all those used as far back as 7.0; is it worth

src/interfaces/libpq/fe-protocol3.c

@@ -166,7 +166,7 @@ pqParseInput3(PGconn *conn)
 			 * ERROR messages are displayed using the notice processor;
 			 * ParameterStatus is handled normally; anything else is just
 			 * dropped on the floor after displaying a suitable warning
-			 * notice.	(An ERROR is very possibly the backend telling us why
+			 * notice.  (An ERROR is very possibly the backend telling us why
 			 * it is about to close the connection, so we don't want to just
 			 * discard it...)
 			 */
@@ -364,7 +364,7 @@ pqParseInput3(PGconn *conn)
 				case 'd':		/* Copy Data */
 
 					/*
-					 * If we see Copy Data, just silently drop it.	This would
+					 * If we see Copy Data, just silently drop it.  This would
 					 * only occur if application exits COPY OUT mode too
 					 * early.
 					 */
@@ -373,7 +373,7 @@ pqParseInput3(PGconn *conn)
 				case 'c':		/* Copy Done */
 
 					/*
-					 * If we see Copy Done, just silently drop it.	This is
+					 * If we see Copy Done, just silently drop it.  This is
 					 * the normal case during PQendcopy.  We will keep
 					 * swallowing data, expecting to see command-complete for
 					 * the COPY command.
@@ -603,7 +603,7 @@ advance_and_error:
 	pqSaveErrorResult(conn);
 
 	/*
-	 * Return zero to allow input parsing to continue.	Subsequent "D"
+	 * Return zero to allow input parsing to continue.  Subsequent "D"
 	 * messages will be ignored until we get to end of data, since an error
 	 * result is already set up.
 	 */
@@ -785,7 +785,7 @@ set_error_result:
 	pqSaveErrorResult(conn);
 
 	/*
-	 * Return zero to allow input parsing to continue.	Subsequent "D"
+	 * Return zero to allow input parsing to continue.  Subsequent "D"
 	 * messages will be ignored until we get to end of data, since an error
 	 * result is already set up.
 	 */
@@ -812,14 +812,14 @@ pqGetErrorNotice3(PGconn *conn, bool isError)
 
 	/*
 	 * Since the fields might be pretty long, we create a temporary
-	 * PQExpBuffer rather than using conn->workBuffer.	workBuffer is intended
-	 * for stuff that is expected to be short.	We shouldn't use
+	 * PQExpBuffer rather than using conn->workBuffer.  workBuffer is intended
+	 * for stuff that is expected to be short.  We shouldn't use
 	 * conn->errorMessage either, since this might be only a notice.
 	 */
 	initPQExpBuffer(&workBuf);
 
 	/*
-	 * Make a PGresult to hold the accumulated fields.	We temporarily lie
+	 * Make a PGresult to hold the accumulated fields.  We temporarily lie
 	 * about the result status, so that PQmakeEmptyPGresult doesn't uselessly
 	 * copy conn->errorMessage.
 	 */
@@ -1031,7 +1031,7 @@ reportErrorPosition(PQExpBuffer msg, const char *query, int loc, int encoding)
 	/*
 	 * Each character might occupy multiple physical bytes in the string, and
 	 * in some Far Eastern character sets it might take more than one screen
-	 * column as well.	We compute the starting byte offset and starting
+	 * column as well.  We compute the starting byte offset and starting
 	 * screen column of each logical character, and store these in qidx[] and
 	 * scridx[] respectively.
 	 */
@@ -1059,8 +1059,8 @@ reportErrorPosition(PQExpBuffer msg, const char *query, int loc, int encoding)
 	/*
 	 * Within the scanning loop, cno is the current character's logical
 	 * number, qoffset is its offset in wquery, and scroffset is its starting
-	 * logical screen column (all indexed from 0).	"loc" is the logical
-	 * character number of the error location.	We scan to determine loc_line
+	 * logical screen column (all indexed from 0).  "loc" is the logical
+	 * character number of the error location.  We scan to determine loc_line
 	 * (the 1-based line number containing loc) and ibeg/iend (first character
 	 * number and last+1 character number of the line containing loc). Note
 	 * that qidx[] and scridx[] are filled only as far as iend.
@@ -1511,7 +1511,7 @@ pqGetCopyData3(PGconn *conn, char **buffer, int async)
 	for (;;)
 	{
 		/*
-		 * Collect the next input message.	To make life simpler for async
+		 * Collect the next input message.  To make life simpler for async
 		 * callers, we keep returning 0 until the next message is fully
 		 * available, even if it is not Copy Data.
 		 */
@@ -1718,7 +1718,7 @@ pqEndcopy3(PGconn *conn)
 	/*
 	 * Non blocking connections may have to abort at this point.  If everyone
 	 * played the game there should be no problem, but in error scenarios the
-	 * expected messages may not have arrived yet.	(We are assuming that the
+	 * expected messages may not have arrived yet.  (We are assuming that the
 	 * backend's packetizing will ensure that CommandComplete arrives along
 	 * with the CopyDone; are there corner cases where that doesn't happen?)
 	 */

src/interfaces/libpq/fe-secure.c

@@ -1040,7 +1040,7 @@ destroy_ssl_system(void)
  *	Initialize (potentially) per-connection SSL data, namely the
  *	client certificate, private key, and trusted CA certs.
  *
- *	conn->ssl must already be created.	It receives the connection's client
+ *	conn->ssl must already be created.  It receives the connection's client
  *	certificate and private key.  Note however that certificates also get
  *	loaded into the SSL_context object, and are therefore accessible to all
  *	connections in this process.  This should be OK as long as there aren't
@@ -1405,7 +1405,7 @@ initialize_SSL(PGconn *conn)
 	{
 		/*
 		 * stat() failed; assume root file doesn't exist.  If sslmode is
-		 * verify-ca or verify-full, this is an error.	Otherwise, continue
+		 * verify-ca or verify-full, this is an error.  Otherwise, continue
 		 * without performing any server cert verification.
 		 */
 		if (conn->sslmode[0] == 'v')	/* "verify-ca" or "verify-full" */
@@ -1654,7 +1654,7 @@ PQgetssl(PGconn *conn)
 #if defined(ENABLE_THREAD_SAFETY) && !defined(WIN32)
 
 /*
- *	Block SIGPIPE for this thread.	This prevents send()/write() from exiting
+ *	Block SIGPIPE for this thread.  This prevents send()/write() from exiting
  *	the application.
  */
 int
@@ -1693,7 +1693,7 @@ pq_block_sigpipe(sigset_t *osigset, bool *sigpipe_pending)
  *	Discard any pending SIGPIPE and reset the signal mask.
  *
  * Note: we are effectively assuming here that the C library doesn't queue
- * up multiple SIGPIPE events.	If it did, then we'd accidentally leave
+ * up multiple SIGPIPE events.  If it did, then we'd accidentally leave
  * ours in the queue when an event was already pending and we got another.
  * As long as it doesn't queue multiple events, we're OK because the caller
  * can't tell the difference.
@@ -1704,7 +1704,7 @@ pq_block_sigpipe(sigset_t *osigset, bool *sigpipe_pending)
  * gotten one, pass got_epipe = TRUE.
  *
  * We do not want this to change errno, since if it did that could lose
- * the error code from a preceding send().	We essentially assume that if
+ * the error code from a preceding send().  We essentially assume that if
  * we were able to do pq_block_sigpipe(), this can't fail.
  */
 void

src/interfaces/libpq/libpq-fe.h

@@ -55,9 +55,9 @@ typedef enum
 	 * be used for user feedback or similar purposes.
 	 */
 	CONNECTION_STARTED,			/* Waiting for connection to be made.  */
-	CONNECTION_MADE,			/* Connection OK; waiting to send.	   */
+	CONNECTION_MADE,			/* Connection OK; waiting to send.     */
 	CONNECTION_AWAITING_RESPONSE,		/* Waiting for a response from the
-										 * postmaster.		  */
+										 * postmaster.        */
 	CONNECTION_AUTH_OK,			/* Received authentication; waiting for
 								 * backend startup. */
 	CONNECTION_SETENV,			/* Negotiating environment. */

src/interfaces/libpq/pqexpbuffer.c

@@ -161,7 +161,7 @@ resetPQExpBuffer(PQExpBuffer str)
  * Make sure there is enough space for 'needed' more bytes in the buffer
  * ('needed' does not include the terminating null).
  *
- * Returns 1 if OK, 0 if failed to enlarge buffer.	(In the latter case
+ * Returns 1 if OK, 0 if failed to enlarge buffer.  (In the latter case
  * the buffer is left in "broken" state.)
  */
 int
@@ -175,7 +175,7 @@ enlargePQExpBuffer(PQExpBuffer str, size_t needed)
 
 	/*
 	 * Guard against ridiculous "needed" values, which can occur if we're fed
-	 * bogus data.	Without this, we can get an overflow or infinite loop in
+	 * bogus data.  Without this, we can get an overflow or infinite loop in
 	 * the following.
 	 */
 	if (needed >= ((size_t) INT_MAX - str->len))
@@ -202,7 +202,7 @@ enlargePQExpBuffer(PQExpBuffer str, size_t needed)
 
 	/*
 	 * Clamp to INT_MAX in case we went past it.  Note we are assuming here
-	 * that INT_MAX <= UINT_MAX/2, else the above loop could overflow.	We
+	 * that INT_MAX <= UINT_MAX/2, else the above loop could overflow.  We
 	 * will still have newlen >= needed.
 	 */
 	if (newlen > (size_t) INT_MAX)
@@ -223,7 +223,7 @@ enlargePQExpBuffer(PQExpBuffer str, size_t needed)
 /*
  * printfPQExpBuffer
  * Format text data under the control of fmt (an sprintf-like format string)
- * and insert it into str.	More space is allocated to str if necessary.
+ * and insert it into str.  More space is allocated to str if necessary.
  * This is a convenience routine that does the same thing as
  * resetPQExpBuffer() followed by appendPQExpBuffer().
  */

src/interfaces/libpq/pqexpbuffer.h

@@ -37,7 +37,7 @@
  *				more space.  We must always have maxlen > len.
  *
  * An exception occurs if we failed to allocate enough memory for the string
- * buffer.	In that case data points to a statically allocated empty string,
+ * buffer.  In that case data points to a statically allocated empty string,
  * and len = maxlen = 0.
  *-------------------------
  */
@@ -115,7 +115,7 @@ extern void initPQExpBuffer(PQExpBuffer str);
  *
  * NOTE: some routines build up a string using PQExpBuffer, and then
  * release the PQExpBufferData but return the data string itself to their
- * caller.	At that point the data string looks like a plain malloc'd
+ * caller.  At that point the data string looks like a plain malloc'd
  * string.
  */
 extern void destroyPQExpBuffer(PQExpBuffer str);
@@ -134,7 +134,7 @@ extern void resetPQExpBuffer(PQExpBuffer str);
  * Make sure there is enough space for 'needed' more bytes in the buffer
  * ('needed' does not include the terminating null).
  *
- * Returns 1 if OK, 0 if failed to enlarge buffer.	(In the latter case
+ * Returns 1 if OK, 0 if failed to enlarge buffer.  (In the latter case
  * the buffer is left in "broken" state.)
  */
 extern int	enlargePQExpBuffer(PQExpBuffer str, size_t needed);
@@ -142,7 +142,7 @@ extern int	enlargePQExpBuffer(PQExpBuffer str, size_t needed);
 /*------------------------
  * printfPQExpBuffer
  * Format text data under the control of fmt (an sprintf-like format string)
- * and insert it into str.	More space is allocated to str if necessary.
+ * and insert it into str.  More space is allocated to str if necessary.
  * This is a convenience routine that does the same thing as
  * resetPQExpBuffer() followed by appendPQExpBuffer().
  */

src/interfaces/libpq/test/uri-regress.c

@@ -2,7 +2,7 @@
  * uri-regress.c
  *		A test program for libpq URI format
  *
- * This is a helper for libpq conninfo regression testing.	It takes a single
+ * This is a helper for libpq conninfo regression testing.  It takes a single
  * conninfo string as a parameter, parses it using PQconninfoParse, and then
  * prints out the values from the parsed PQconninfoOption struct that differ
  * from the defaults (obtained from PQconndefaults).