Phase 2 of pgindent updates.

Change pg_bsd_indent to follow upstream rules for placement of comments
to the right of code, and remove pgindent hack that caused comments
following #endif to not obey the general rule.

Commit e3860ffa4d wasn't actually using
the published version of pg_bsd_indent, but a hacked-up version that
tried to minimize the amount of movement of comments to the right of
code.  The situation of interest is where such a comment has to be
moved to the right of its default placement at column 33 because there's
code there.  BSD indent has always moved right in units of tab stops
in such cases --- but in the previous incarnation, indent was working
in 8-space tab stops, while now it knows we use 4-space tabs.  So the
net result is that in about half the cases, such comments are placed
one tab stop left of before.  This is better all around: it leaves
more room on the line for comment text, and it means that in such
cases the comment uniformly starts at the next 4-space tab stop after
the code, rather than sometimes one and sometimes two tabs after.

Also, ensure that comments following #endif are indented the same
as comments following other preprocessor commands such as #else.
That inconsistency turns out to have been self-inflicted damage
from a poorly-thought-through post-indent "fixup" in pgindent.

This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.

Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us

src/backend/commands/copy.c

@@ -102,7 +102,7 @@ typedef struct CopyStateData
 	bool		fe_eof;			/* true if detected end of copy data */
 	EolType		eol_type;		/* EOL type of input */
 	int			file_encoding;	/* file or remote side's character encoding */
-	bool		need_transcoding;		/* file encoding diff from server? */
+	bool		need_transcoding;	/* file encoding diff from server? */
 	bool		encoding_embeds_ascii;	/* ASCII can be non-first byte? */
 
 	/* parameters from the COPY command */
@@ -119,17 +119,17 @@ typedef struct CopyStateData
 	bool		header_line;	/* CSV header line? */
 	char	   *null_print;		/* NULL marker string (server encoding!) */
 	int			null_print_len; /* length of same */
-	char	   *null_print_client;		/* same converted to file encoding */
+	char	   *null_print_client;	/* same converted to file encoding */
 	char	   *delim;			/* column delimiter (must be 1 byte) */
 	char	   *quote;			/* CSV quote char (must be 1 byte) */
 	char	   *escape;			/* CSV escape char (must be 1 byte) */
 	List	   *force_quote;	/* list of column names */
 	bool		force_quote_all;	/* FORCE_QUOTE *? */
-	bool	   *force_quote_flags;		/* per-column CSV FQ flags */
+	bool	   *force_quote_flags;	/* per-column CSV FQ flags */
 	List	   *force_notnull;	/* list of column names */
 	bool	   *force_notnull_flags;	/* per-column CSV FNN flags */
 	List	   *force_null;		/* list of column names */
-	bool	   *force_null_flags;		/* per-column CSV FN flags */
+	bool	   *force_null_flags;	/* per-column CSV FN flags */
 	bool		convert_selectively;	/* do selective binary conversion? */
 	List	   *convert_select; /* list of column names (can be NIL) */
 	bool	   *convert_select_flags;	/* per-column CSV/TEXT CS flags */
@@ -162,7 +162,7 @@ typedef struct CopyStateData
 	Oid		   *typioparams;	/* array of element types for in_functions */
 	int		   *defmap;			/* array of default att numbers */
 	ExprState **defexprs;		/* array of default att expressions */
-	bool		volatile_defexprs;		/* is any of defexprs volatile? */
+	bool		volatile_defexprs;	/* is any of defexprs volatile? */
 	List	   *range_table;
 
 	PartitionDispatch *partition_dispatch_info;
@@ -195,7 +195,7 @@ typedef struct CopyStateData
 	 * can display it in error messages if appropriate.
 	 */
 	StringInfoData line_buf;
-	bool		line_buf_converted;		/* converted to server encoding? */
+	bool		line_buf_converted; /* converted to server encoding? */
 	bool		line_buf_valid; /* contains the row being processed? */
 
 	/*
@@ -355,10 +355,10 @@ SendCopyBegin(CopyState cstate)
 		int			i;
 
 		pq_beginmessage(&buf, 'H');
-		pq_sendbyte(&buf, format);		/* overall format */
+		pq_sendbyte(&buf, format);	/* overall format */
 		pq_sendint(&buf, natts, 2);
 		for (i = 0; i < natts; i++)
-			pq_sendint(&buf, format, 2);		/* per-column formats */
+			pq_sendint(&buf, format, 2);	/* per-column formats */
 		pq_endmessage(&buf);
 		cstate->copy_dest = COPY_NEW_FE;
 	}
@@ -388,10 +388,10 @@ ReceiveCopyBegin(CopyState cstate)
 		int			i;
 
 		pq_beginmessage(&buf, 'G');
-		pq_sendbyte(&buf, format);		/* overall format */
+		pq_sendbyte(&buf, format);	/* overall format */
 		pq_sendint(&buf, natts, 2);
 		for (i = 0; i < natts; i++)
-			pq_sendint(&buf, format, 2);		/* per-column formats */
+			pq_sendint(&buf, format, 2);	/* per-column formats */
 		pq_endmessage(&buf);
 		cstate->copy_dest = COPY_NEW_FE;
 		cstate->fe_msgbuf = makeStringInfo();
@@ -609,20 +609,20 @@ CopyGetData(CopyState cstate, void *databuf, int minread, int maxread)
 					RESUME_CANCEL_INTERRUPTS();
 					switch (mtype)
 					{
-						case 'd':		/* CopyData */
+						case 'd':	/* CopyData */
 							break;
-						case 'c':		/* CopyDone */
+						case 'c':	/* CopyDone */
 							/* COPY IN correctly terminated by frontend */
 							cstate->fe_eof = true;
 							return bytesread;
-						case 'f':		/* CopyFail */
+						case 'f':	/* CopyFail */
 							ereport(ERROR,
 									(errcode(ERRCODE_QUERY_CANCELED),
 									 errmsg("COPY from stdin failed: %s",
 									   pq_getmsgstring(cstate->fe_msgbuf))));
 							break;
-						case 'H':		/* Flush */
-						case 'S':		/* Sync */
+						case 'H':	/* Flush */
+						case 'S':	/* Sync */
 
 							/*
 							 * Ignore Flush/Sync for the convenience of client
@@ -1697,7 +1697,7 @@ BeginCopy(ParseState *pstate,
 	/* See Multibyte encoding comment above */
 	cstate->encoding_embeds_ascii = PG_ENCODING_IS_CLIENT_ONLY(cstate->file_encoding);
 
-	cstate->copy_dest = COPY_FILE;		/* default */
+	cstate->copy_dest = COPY_FILE;	/* default */
 
 	MemoryContextSwitchTo(oldcontext);
 
@@ -1951,7 +1951,7 @@ CopyTo(CopyState cstate)
 		tupDesc = cstate->queryDesc->tupDesc;
 	attr = tupDesc->attrs;
 	num_phys_attrs = tupDesc->natts;
-	cstate->null_print_client = cstate->null_print;		/* default */
+	cstate->null_print_client = cstate->null_print; /* default */
 
 	/* We use fe_msgbuf as a per-row buffer regardless of copy_dest */
 	cstate->fe_msgbuf = makeStringInfo();
@@ -3707,8 +3707,8 @@ CopyReadLineText(CopyState cstate)
 
 				if (c == '\n')
 				{
-					raw_buf_ptr++;		/* eat newline */
-					cstate->eol_type = EOL_CRNL;		/* in case not set yet */
+					raw_buf_ptr++;	/* eat newline */
+					cstate->eol_type = EOL_CRNL;	/* in case not set yet */
 				}
 				else
 				{
@@ -4458,7 +4458,7 @@ CopyAttributeOutText(CopyState cstate, char *string)
 							break;
 						/* All ASCII control chars are length 1 */
 						ptr++;
-						continue;		/* fall to end of loop */
+						continue;	/* fall to end of loop */
 				}
 				/* if we get here, we need to convert the control char */
 				DUMPSOFAR();
@@ -4518,7 +4518,7 @@ CopyAttributeOutText(CopyState cstate, char *string)
 							break;
 						/* All ASCII control chars are length 1 */
 						ptr++;
-						continue;		/* fall to end of loop */
+						continue;	/* fall to end of loop */
 				}
 				/* if we get here, we need to convert the control char */
 				DUMPSOFAR();