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/backend/commands/copy.c

@@ -187,7 +187,7 @@ typedef struct CopyStateData
 
 	/*
 	 * Finally, raw_buf holds raw data read from the data source (file or
-	 * client connection).	CopyReadLine parses this data sufficiently to
+	 * client connection).  CopyReadLine parses this data sufficiently to
 	 * locate line boundaries, then transfers the data to line_buf and
 	 * converts it.  Note: we guarantee that there is a \0 at
 	 * raw_buf[raw_buf_len].
@@ -213,7 +213,7 @@ typedef struct
  * function call overhead in tight COPY loops.
  *
  * We must use "if (1)" because the usual "do {...} while(0)" wrapper would
- * prevent the continue/break processing from working.	We end the "if (1)"
+ * prevent the continue/break processing from working.  We end the "if (1)"
  * with "else ((void) 0)" to ensure the "if" does not unintentionally match
  * any "else" in the calling code, and to avoid any compiler warnings about
  * empty statements.  See http://www.cit.gu.edu.au/~anthony/info/C/C.macros.
@@ -547,7 +547,7 @@ CopySendEndOfRow(CopyState cstate)
  * CopyGetData reads data from the source (file or frontend)
  *
  * We attempt to read at least minread, and at most maxread, bytes from
- * the source.	The actual number of bytes read is returned; if this is
+ * the source.  The actual number of bytes read is returned; if this is
  * less than minread, EOF was detected.
  *
  * Note: when copying from the frontend, we expect a proper EOF mark per
@@ -764,7 +764,7 @@ CopyLoadRawBuf(CopyState cstate)
  * we also support copying the output of an arbitrary SELECT query.
  *
  * If <pipe> is false, transfer is between the table and the file named
- * <filename>.	Otherwise, transfer is between the table and our regular
+ * <filename>.  Otherwise, transfer is between the table and our regular
  * input/output stream. The latter could be either stdin/stdout or a
  * socket, depending on whether we're running under Postmaster control.
  *
@@ -1271,7 +1271,7 @@ BeginCopy(bool is_from,
 					 errmsg("COPY (SELECT) WITH OIDS is not supported")));
 
 		/*
-		 * Run parse analysis and rewrite.	Note this also acquires sufficient
+		 * Run parse analysis and rewrite.  Note this also acquires sufficient
 		 * locks on the source table(s).
 		 *
 		 * Because the parser and planner tend to scribble on their input, we
@@ -1681,7 +1681,7 @@ CopyTo(CopyState cstate)
 	 * Create a temporary memory context that we can reset once per row to
 	 * recover palloc'd memory.  This avoids any problems with leaks inside
 	 * datatype output routines, and should be faster than retail pfree's
-	 * anyway.	(We don't need a whole econtext as CopyFrom does.)
+	 * anyway.  (We don't need a whole econtext as CopyFrom does.)
 	 */
 	cstate->rowcontext = AllocSetContextCreate(CurrentMemoryContext,
 											   "COPY TO",
@@ -2837,7 +2837,7 @@ NextCopyFrom(CopyState cstate, ExprContext *econtext,
 			 * if client chooses to send that now.
 			 *
 			 * Note that we MUST NOT try to read more data in an old-protocol
-			 * copy, since there is no protocol-level EOF marker then.	We
+			 * copy, since there is no protocol-level EOF marker then.  We
 			 * could go either way for copy from file, but choose to throw
 			 * error if there's data after the EOF marker, for consistency
 			 * with the new-protocol case.
@@ -2899,7 +2899,7 @@ NextCopyFrom(CopyState cstate, ExprContext *econtext,
 
 	/*
 	 * Now compute and insert any defaults available for the columns not
-	 * provided by the input data.	Anything not processed here or above will
+	 * provided by the input data.  Anything not processed here or above will
 	 * remain NULL.
 	 */
 	for (i = 0; i < num_defaults; i++)
@@ -2934,7 +2934,7 @@ EndCopyFrom(CopyState cstate)
  * server encoding.
  *
  * Result is true if read was terminated by EOF, false if terminated
- * by newline.	The terminating newline or EOF marker is not included
+ * by newline.  The terminating newline or EOF marker is not included
  * in the final value of line_buf.
  */
 static bool
@@ -3090,7 +3090,7 @@ CopyReadLineText(CopyState cstate)
 		 * of read-ahead and avoid the many calls to
 		 * IF_NEED_REFILL_AND_NOT_EOF_CONTINUE(), but the COPY_OLD_FE protocol
 		 * does not allow us to read too far ahead or we might read into the
-		 * next data, so we read-ahead only as far we know we can.	One
+		 * next data, so we read-ahead only as far we know we can.  One
 		 * optimization would be to read-ahead four byte here if
 		 * cstate->copy_dest != COPY_OLD_FE, but it hardly seems worth it,
 		 * considering the size of the buffer.
@@ -3100,7 +3100,7 @@ CopyReadLineText(CopyState cstate)
 			REFILL_LINEBUF;
 
 			/*
-			 * Try to read some more data.	This will certainly reset
+			 * Try to read some more data.  This will certainly reset
 			 * raw_buf_index to zero, and raw_buf_ptr must go with it.
 			 */
 			if (!CopyLoadRawBuf(cstate))
@@ -3158,7 +3158,7 @@ CopyReadLineText(CopyState cstate)
 			/*
 			 * Updating the line count for embedded CR and/or LF chars is
 			 * necessarily a little fragile - this test is probably about the
-			 * best we can do.	(XXX it's arguable whether we should do this
+			 * best we can do.  (XXX it's arguable whether we should do this
 			 * at all --- is cur_lineno a physical or logical count?)
 			 */
 			if (in_quote && c == (cstate->eol_type == EOL_NL ? '\n' : '\r'))
@@ -3337,7 +3337,7 @@ CopyReadLineText(CopyState cstate)
 				 * after a backslash is special, so we skip over that second
 				 * character too.  If we didn't do that \\. would be
 				 * considered an eof-of copy, while in non-CSV mode it is a
-				 * literal backslash followed by a period.	In CSV mode,
+				 * literal backslash followed by a period.  In CSV mode,
 				 * backslashes are not special, so we want to process the
 				 * character after the backslash just like a normal character,
 				 * so we don't increment in those cases.
@@ -3440,7 +3440,7 @@ CopyReadAttributesText(CopyState cstate)
 	/*
 	 * The de-escaped attributes will certainly not be longer than the input
 	 * data line, so we can just force attribute_buf to be large enough and
-	 * then transfer data without any checks for enough space.	We need to do
+	 * then transfer data without any checks for enough space.  We need to do
 	 * it this way because enlarging attribute_buf mid-stream would invalidate
 	 * pointers already stored into cstate->raw_fields[].
 	 */
@@ -3670,7 +3670,7 @@ CopyReadAttributesCSV(CopyState cstate)
 	/*
 	 * The de-escaped attributes will certainly not be longer than the input
 	 * data line, so we can just force attribute_buf to be large enough and
-	 * then transfer data without any checks for enough space.	We need to do
+	 * then transfer data without any checks for enough space.  We need to do
 	 * it this way because enlarging attribute_buf mid-stream would invalidate
 	 * pointers already stored into cstate->raw_fields[].
 	 */
@@ -3885,7 +3885,7 @@ CopyAttributeOutText(CopyState cstate, char *string)
 	/*
 	 * We have to grovel through the string searching for control characters
 	 * and instances of the delimiter character.  In most cases, though, these
-	 * are infrequent.	To avoid overhead from calling CopySendData once per
+	 * are infrequent.  To avoid overhead from calling CopySendData once per
 	 * character, we dump out all characters between escaped characters in a
 	 * single call.  The loop invariant is that the data from "start" to "ptr"
 	 * can be sent literally, but hasn't yet been.