Escape processing patch:

        o  turns off escape_string_warning in pg_dumpall.c
        o  optionally use E'' for \password (undocumented option?)
        o  honor standard_conforming-strings for \copy (but not
           support literal E'' strings)
        o  optionally use E'' for \d commands
        o  turn off escape_string_warning for createdb, createuser,
           droplang

src/bin/pg_dump/pg_dumpall.c

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  *
- * $PostgreSQL: pgsql/src/bin/pg_dump/pg_dumpall.c,v 1.77 2006/05/28 21:13:54 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/pg_dump/pg_dumpall.c,v 1.78 2006/05/31 11:02:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -338,6 +338,8 @@ main(int argc, char *argv[])
 		printf("SET client_encoding = '%s';\n",
 			   pg_encoding_to_char(encoding));
 		printf("SET standard_conforming_strings = %s;\n", std_strings);
+		if (strcmp(std_strings, "off") == 0)
+			printf("SET escape_string_warning = 'off';\n");
 		printf("\n");
 
 		/* Dump roles (users) */

src/bin/psql/command.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2006, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/command.c,v 1.166 2006/04/02 20:08:22 neilc Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/command.c,v 1.167 2006/05/31 11:02:42 momjian Exp $
  */
 #include "postgres_fe.h"
 #include "command.h"
@@ -681,8 +681,9 @@ exec_command(const char *cmd,
 				PGresult   *res;
 
 				initPQExpBuffer(&buf);
-				printfPQExpBuffer(&buf, "ALTER USER %s PASSWORD '%s';",
-								  fmtId(user), encrypted_password);
+				printfPQExpBuffer(&buf, "ALTER USER %s PASSWORD %c'%s';",
+								  fmtId(user), NEED_E_STR(encrypted_password),
+								  encrypted_password);
 				res = PSQLexec(buf.data, false);
 				termPQExpBuffer(&buf);
 				if (!res)

src/bin/psql/common.h

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2006, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/common.h,v 1.47 2006/03/06 19:49:20 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/common.h,v 1.48 2006/05/31 11:02:42 momjian Exp $
  */
 #ifndef COMMON_H
 #define COMMON_H
@@ -22,6 +22,12 @@
 
 #define atooid(x)  ((Oid) strtoul((x), NULL, 10))
 
+/*
+ *	We use this to prefix strings with E'' that we know are already safe,
+ *	so we don't get an escape_string_warning.
+ */
+#define	NEED_E_STR(str)		((strchr(str, '\\') && !standard_strings()) ? ESCAPE_STRING_SYNTAX : ' ')
+
 /*
  * Safer versions of some standard C library functions. If an
  * out-of-memory condition occurs, these functions will bail out

src/bin/psql/copy.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2006, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/copy.c,v 1.61 2006/05/26 19:51:29 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/copy.c,v 1.62 2006/05/31 11:02:42 momjian Exp $
  */
 #include "postgres_fe.h"
 #include "copy.h"
@@ -216,7 +216,7 @@ parse_slash_copy(const char *args)
 		goto error;
 
 	token = strtokx(NULL, whitespace, NULL, "'",
-					'\\', true, pset.encoding);
+					standard_strings() ? 0 : '\\', true, pset.encoding);
 	if (!token)
 		goto error;
 
@@ -255,7 +255,7 @@ parse_slash_copy(const char *args)
 	if (token && pg_strcasecmp(token, "delimiters") == 0)
 	{
 		token = strtokx(NULL, whitespace, NULL, "'",
-						'\\', false, pset.encoding);
+						standard_strings() ? 0 : '\\', false, pset.encoding);
 		if (!token)
 			goto error;
 		result->delim = pg_strdup(token);
@@ -290,10 +290,10 @@ parse_slash_copy(const char *args)
 			else if (pg_strcasecmp(token, "delimiter") == 0)
 			{
 				token = strtokx(NULL, whitespace, NULL, "'",
-								'\\', false, pset.encoding);
+								standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token && pg_strcasecmp(token, "as") == 0)
 					token = strtokx(NULL, whitespace, NULL, "'",
-									'\\', false, pset.encoding);
+									standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token)
 					result->delim = pg_strdup(token);
 				else
@@ -302,10 +302,10 @@ parse_slash_copy(const char *args)
 			else if (pg_strcasecmp(token, "null") == 0)
 			{
 				token = strtokx(NULL, whitespace, NULL, "'",
-								'\\', false, pset.encoding);
+								standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token && pg_strcasecmp(token, "as") == 0)
 					token = strtokx(NULL, whitespace, NULL, "'",
-									'\\', false, pset.encoding);
+									standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token)
 					result->null = pg_strdup(token);
 				else
@@ -314,10 +314,10 @@ parse_slash_copy(const char *args)
 			else if (pg_strcasecmp(token, "quote") == 0)
 			{
 				token = strtokx(NULL, whitespace, NULL, "'",
-								'\\', false, pset.encoding);
+								standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token && pg_strcasecmp(token, "as") == 0)
 					token = strtokx(NULL, whitespace, NULL, "'",
-									'\\', false, pset.encoding);
+									standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token)
 					result->quote = pg_strdup(token);
 				else
@@ -326,10 +326,10 @@ parse_slash_copy(const char *args)
 			else if (pg_strcasecmp(token, "escape") == 0)
 			{
 				token = strtokx(NULL, whitespace, NULL, "'",
-								'\\', false, pset.encoding);
+								standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token && pg_strcasecmp(token, "as") == 0)
 					token = strtokx(NULL, whitespace, NULL, "'",
-									'\\', false, pset.encoding);
+									standard_strings() ? 0 : '\\', false, pset.encoding);
 				if (token)
 					result->escape = pg_strdup(token);
 				else
@@ -462,20 +462,22 @@ do_copy(const char *args)
 	if (options->delim)
 	{
 		if (options->delim[0] == '\'')
-			appendPQExpBuffer(&query, " USING DELIMITERS %s",
-							  options->delim);
+			appendPQExpBuffer(&query, " USING DELIMITERS %c%s",
+							  NEED_E_STR(options->delim), options->delim);
 		else
-			appendPQExpBuffer(&query, " USING DELIMITERS '%s'",
-							  options->delim);
+			appendPQExpBuffer(&query, " USING DELIMITERS %c'%s'",
+							  NEED_E_STR(options->delim), options->delim);
 	}
 
 	/* There is no backward-compatible CSV syntax */
 	if (options->null)
 	{
 		if (options->null[0] == '\'')
-			appendPQExpBuffer(&query, " WITH NULL AS %s", options->null);
+			appendPQExpBuffer(&query, " WITH NULL AS %c%s",
+							  NEED_E_STR(options->null), options->null);
 		else
-			appendPQExpBuffer(&query, " WITH NULL AS '%s'", options->null);
+			appendPQExpBuffer(&query, " WITH NULL AS %c'%s'",
+							  NEED_E_STR(options->null), options->null);
 	}
 
 	if (options->csv_mode)
@@ -487,17 +489,21 @@ do_copy(const char *args)
 	if (options->quote)
 	{
 		if (options->quote[0] == '\'')
-			appendPQExpBuffer(&query, " QUOTE AS %s", options->quote);
+			appendPQExpBuffer(&query, " QUOTE AS %c%s",
+							  NEED_E_STR(options->quote), options->quote);
 		else
-			appendPQExpBuffer(&query, " QUOTE AS '%s'", options->quote);
+			appendPQExpBuffer(&query, " QUOTE AS %c'%s'",
+							  NEED_E_STR(options->quote), options->quote);
 	}
 
 	if (options->escape)
 	{
 		if (options->escape[0] == '\'')
-			appendPQExpBuffer(&query, " ESCAPE AS %s", options->escape);
+			appendPQExpBuffer(&query, " ESCAPE AS %c%s",
+							  NEED_E_STR(options->escape), options->escape);
 		else
-			appendPQExpBuffer(&query, " ESCAPE AS '%s'", options->escape);
+			appendPQExpBuffer(&query, " ESCAPE AS %c'%s'",
+							  NEED_E_STR(options->escape), options->escape);
 	}
 
 	if (options->force_quote_list)

src/bin/psql/describe.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2006, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.137 2006/05/28 21:13:54 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.138 2006/05/31 11:02:42 momjian Exp $
  */
 #include "postgres_fe.h"
 #include "describe.h"
@@ -1907,14 +1907,17 @@ processNamePattern(PQExpBuffer buf, const char *pattern,
 			if (altnamevar)
 			{
 				appendPQExpBuffer(buf, "(%s ~ ", namevar);
+				appendPQExpBufferChar(buf, NEED_E_STR(namebuf.data));
 				appendStringLiteralConn(buf, namebuf.data, pset.db);
 				appendPQExpBuffer(buf, "\n        OR %s ~ ", altnamevar);
+				appendPQExpBufferChar(buf, NEED_E_STR(namebuf.data));
 				appendStringLiteralConn(buf, namebuf.data, pset.db);
 				appendPQExpBuffer(buf, ")\n");
 			}
 			else
 			{
 				appendPQExpBuffer(buf, "%s ~ ", namevar);
+				appendPQExpBufferChar(buf, NEED_E_STR(namebuf.data));
 				appendStringLiteralConn(buf, namebuf.data, pset.db);
 				appendPQExpBufferChar(buf, '\n');
 			}
@@ -1938,6 +1941,7 @@ processNamePattern(PQExpBuffer buf, const char *pattern,
 		{
 			WHEREAND();
 			appendPQExpBuffer(buf, "%s ~ ", schemavar);
+			appendPQExpBufferChar(buf, NEED_E_STR(schemabuf.data));
 			appendStringLiteralConn(buf, schemabuf.data, pset.db);
 			appendPQExpBufferChar(buf, '\n');
 		}

src/bin/scripts/createdb.c

@@ -5,7 +5,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/bin/scripts/createdb.c,v 1.19 2006/05/29 19:52:46 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/scripts/createdb.c,v 1.20 2006/05/31 11:02:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -185,6 +185,8 @@ main(int argc, char *argv[])
 	{
 		conn = connectDatabase(dbname, host, port, username, password, progname);
 
+		executeCommand(conn, "SET escape_string_warning TO 'off'", progname, false);
+
 		printfPQExpBuffer(&sql, "COMMENT ON DATABASE %s IS ", fmtId(dbname));
 		appendStringLiteralConn(&sql, comment, conn);
 		appendPQExpBuffer(&sql, ";\n");

src/bin/scripts/createuser.c

@@ -5,7 +5,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/bin/scripts/createuser.c,v 1.30 2006/05/29 19:52:46 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/scripts/createuser.c,v 1.31 2006/05/31 11:02:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -243,6 +243,8 @@ main(int argc, char *argv[])
 	printfPQExpBuffer(&sql, "CREATE ROLE %s", fmtId(newuser));
 	if (newpassword)
 	{
+		executeCommand(conn, "SET escape_string_warning TO 'off'", progname, false);
+
 		if (encrypted == TRI_YES)
 			appendPQExpBuffer(&sql, " ENCRYPTED");
 		if (encrypted == TRI_NO)

src/bin/scripts/droplang.c

@@ -5,7 +5,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/bin/scripts/droplang.c,v 1.20 2006/05/29 19:52:46 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/scripts/droplang.c,v 1.21 2006/05/31 11:02:42 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -176,8 +176,7 @@ main(int argc, char *argv[])
 	 * Force schema search path to be just pg_catalog, so that we don't have
 	 * to be paranoid about search paths below.
 	 */
-	executeCommand(conn, "SET search_path = pg_catalog;",
-				   progname, echo);
+	executeCommand(conn, "SET search_path = pg_catalog;", progname, echo);
 
 	/*
 	 * Make sure the language is installed and find the OIDs of the handler