Sorry, guys. Here is the ultimate patch which keeps the entire

bmomjian · bmomjian · commit 341e360d67e1 · 1999-09-27T21:02:54.000Z
behavior as it was, apart from forbidding minus-terminated
operators. Seems that I have to break the habit of doing before
thinking properly :-/  The point is that my second patch breaks
constructs like a &amp; b  or   a ! b. This patch is to be applied
instead of any of two other today's patches.

Leon
diff --git a/src/backend/parser/scan.l b/src/backend/parser/scan.l
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.55 1999/09/27 19:40:40 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.56 1999/09/27 21:02:54 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -151,7 +151,7 @@ typecast		"::"
 
 self			[,()\[\].;$\:\+\-\*\/\%\^\<\>\=\|]
 op_and_self		[\~\!\@\#\^\&\|\`\?\$\:\+\-\*\/\%\<\>\=]
-operator		{op_and_self}+
+operator	{op_and_self}|({op_and_self}+[\~\!\@\#\^\&\|\`\?\$\:\+\*\/\%\<\>\=])
 
 /* we do not allow unary minus in numbers. 
  * instead we pass it verbatim to parser. there it gets

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.55 1999/09/27 19:40:40 momjian Exp $`
	`11`	`+ * $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.56 1999/09/27 21:02:54 momjian Exp $`
`12`	`12`	`*`
`13`	`13`	`*-------------------------------------------------------------------------`
`14`	`14`	`*/`
`@@ -151,7 +151,7 @@ typecast "::"`
`151`	`151`
`152`	`152`	`self [,()\[\].;$\:\+\-\*\/\%\^\<\>\=\\|]`
`153`	`153`	op_and_self [\~\!\@\#\^\&\\|\`\?\$\:\+\-\*\/\%\<\>\=]
`154`		`-operator {op_and_self}+`
	`154`	+operator {op_and_self}\|({op_and_self}+[\~\!\@\#\^\&\\|\`\?\$\:\+\*\/\%\<\>\=])
`155`	`155`
`156`	`156`	`/* we do not allow unary minus in numbers.`
`157`	`157`	`* instead we pass it verbatim to parser. there it gets`