Clarify code to double \\ and '.

Author: bmomjian

src/bin/initdb/initdb.c

@@ -42,7 +42,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  * Portions taken from FreeBSD.
  *
- * $PostgreSQL: pgsql/src/bin/initdb/initdb.c,v 1.88 2005/06/28 15:38:12 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/initdb/initdb.c,v 1.89 2005/07/01 17:40:28 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1986,10 +1986,8 @@ escape_quotes(const char *src)
 
 	for (i = 0, j = 0; i < len; i++)
 	{
-		if (src[i] == '\\')
-			result[j++] = '\\';
-		if (src[i] == '\'')		/* ANSI standard, '' */
-			result[j++] = '\'';
+		if (src[i] == '\\' || src[i] == '\'')
+			result[j++] = src[i];	/* double these */
 		result[j++] = src[i];
 	}
 	result[j] = '\0';

src/bin/psql/describe.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2005, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.118 2005/06/26 03:03:56 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.119 2005/07/01 17:40:28 momjian Exp $
  */
 #include "postgres_fe.h"
 #include "describe.h"
@@ -1899,7 +1899,7 @@ processNamePattern(PQExpBuffer buf, const char *pattern,
 
 			/* Ensure chars special to string literals are passed properly */
 			if (*cp == '\'' || *cp == '\\')
-				appendPQExpBufferChar(&namebuf, *cp);
+				appendPQExpBufferChar(&namebuf, *cp);	/* double these */
 
 			i = PQmblen(cp, pset.encoding);
 			while (i--)

src/bin/psql/large_obj.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2005, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/large_obj.c,v 1.37 2005/06/14 02:57:41 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/large_obj.c,v 1.38 2005/07/01 17:40:28 momjian Exp $
  */
 #include "postgres_fe.h"
 #include "large_obj.h"
@@ -178,7 +178,7 @@ do_lo_import(const char *filename_arg, const char *comment_arg)
 		for (i = 0; i < slen; i++)
 		{
 			if (comment_arg[i] == '\'' || comment_arg[i] == '\\')
-				*bufptr++ = '\\';
+				*bufptr++ = comment_arg[i];	/* double these */
 			*bufptr++ = comment_arg[i];
 		}
 		strcpy(bufptr, "'");

src/pl/plpgsql/src/gram.y

@@ -4,7 +4,7 @@
  *						  procedural language
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/pl/plpgsql/src/gram.y,v 1.77 2005/06/22 01:35:02 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/pl/plpgsql/src/gram.y,v 1.78 2005/07/01 17:40:29 momjian Exp $
  *
  *	  This software is copyrighted by Jan Wieck - Hamburg.
  *
@@ -387,7 +387,7 @@ decl_statement	: decl_varname decl_const decl_datatype decl_notnull decl_defval
 						while (*cp1 != '\0')
 						{
 							if (*cp1 == '\\' || *cp1 == '\'')
-								*cp2++ = '\\';
+								*cp2++ = *cp1;	/* double these */
 							*cp2++ = *cp1++;
 						}
 						strcpy(cp2, "'::refcursor");