From 038c4114b555cc5a0560a5ddef6c86bf9ffc7679 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sat, 7 Oct 2006 22:21:50 +0000
Subject: [PATCH] Fix ancient oversight in psql's \d pattern processing code:
 when seeing two quote chars inside quote marks, should emit one quote *and
 stay in inquotes mode*.  No doubt the lack of reports of this have something
 to do with the poor documentation of the feature ...

---
 src/bin/psql/describe.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index 266d321653..37b3e00ea5 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -1815,34 +1815,37 @@ processNamePattern(PQExpBuffer buf, const char *pattern,
 
 	while (*cp)
 	{
-		if (*cp == '"')
+		char	ch = *cp;
+
+		if (ch == '"')
 		{
 			if (inquotes && cp[1] == '"')
 			{
-				/* emit one quote */
+				/* emit one quote, stay in inquotes mode */
 				appendPQExpBufferChar(&namebuf, '"');
 				cp++;
 			}
-			inquotes = !inquotes;
+			else
+				inquotes = !inquotes;
 			cp++;
 		}
-		else if (!inquotes && isupper((unsigned char) *cp))
+		else if (!inquotes && isupper((unsigned char) ch))
 		{
 			appendPQExpBufferChar(&namebuf,
-								  pg_tolower((unsigned char) *cp));
+								  pg_tolower((unsigned char) ch));
 			cp++;
 		}
-		else if (!inquotes && *cp == '*')
+		else if (!inquotes && ch == '*')
 		{
 			appendPQExpBuffer(&namebuf, ".*");
 			cp++;
 		}
-		else if (!inquotes && *cp == '?')
+		else if (!inquotes && ch == '?')
 		{
 			appendPQExpBufferChar(&namebuf, '.');
 			cp++;
 		}
-		else if (!inquotes && *cp == '.')
+		else if (!inquotes && ch == '.')
 		{
 			/* Found schema/name separator, move current pattern to schema */
 			resetPQExpBuffer(&schemabuf);
-- 
2.39.5