The following bug has been logged online:

bmomjian · bmomjian · commit 1d567aee070b · 2004-02-20T20:42:29.000Z
Bug reference:      1081
Logged by:          Aarjav Trivedi

Email address:      aarjav@cc.gatech.edu

PostgreSQL version: 7.4

Operating system:   Linux

Description:        Spelling error in tsearch2.sql leading to problems
with
tsearch

Details:

On line 620 of tsearch2.sql which is required to install and run
TSEARCH,

REATE FUNCTION tsstat_in(cstring)

should be

CREATE FUNCTION tsstat_in(cstring)

because of this error, TSEARCH fails to work as specified,
diff --git a/contrib/tsearch2/tsearch.sql.in b/contrib/tsearch2/tsearch.sql.in
@@ -610,7 +610,7 @@ AS
 CREATE TYPE statinfo 
 	as (word text, ndoc int4, nentry int4);
 
---REATE FUNCTION tsstat_in(cstring)
+--CREATE FUNCTION tsstat_in(cstring)
 --RETURNS tsstat
 --AS 'MODULE_PATHNAME'
 --LANGUAGE 'C' with (isstrict);
