plsql.sgml patch

I sent a patch to plsql.sgml to Peter a four days ago and the
message is bouncing, so I am sending this to the list. The patch corrects
a bug in my instr function and has the third instr function in PL/pgSQL
instead of PL/Tcl.

Thanks,

-Roberto

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From: Roberto Mello <rmello@cc.usu.edu>
To: Peter Eisentraut <peter_e@gmx.net>
Subject: Patch to plsql.sgml

Hi Peter,

Robert Gaszewski made some modifications to my instr functions,
including porting the last function
(instr(varchar,varchar,integer,integer)) to PL/pgSQL (instead of PL/Tcl).
He also found a small bug on my first PG/pgSQL port of instr.

I am attaching a patch, made against the current plsql.sgml from CVS.

Thanks,

-Roberto
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