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Fix psql's copy of utf2ucs() to match the backend's copy exactly;

in particular, propagate a fix in the test to see whether a UTF8 character haslength 4 bytes. This is likely of little real-world consequence because5-or-more-byte UTF8 sequences are not supported by Postgres nor seen anywherein the wild, but still we may as well get it right. Problem found by JosephAdams.Bug is aboriginal, so back-patch all the way.

1 parent1207827 commit9217deeCopy full SHA for 9217dee

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src/bin/psql
- mbprint.c

1 file changed

-10

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`‎src/bin/psql/mbprint.c`

Lines changed: 2 additions & 10 deletions

Original file line number	Diff line number	Diff line change
`@@ -3,7 +3,7 @@`
`3`	`3`	`*`
`4`	`4`	`* Copyright (c) 2000-2003, PostgreSQL Global Development Group`
`5`	`5`	`*`
`6`		`- * $Header: /cvsroot/pgsql/src/bin/psql/mbprint.c,v 1.12 2003/09/12 02:40:09 momjian Exp $`
	`6`	`+ * $Header: /cvsroot/pgsql/src/bin/psql/mbprint.c,v 1.12.2.1 2010/08/16 00:07:00 tgl Exp $`
`7`	`7`	`*/`
`8`	`8`
`9`	`9`	`#include"postgres_fe.h"`
`@@ -172,28 +172,20 @@ utf2ucs(const unsigned char *c)`
`172`	`172`	`if ((*c&0x80)==0)`
`173`	`173`	`return (pg_wchar)c[0];`
`174`	`174`	`elseif ((*c&0xe0)==0xc0)`
`175`		`-{`
`176`	`175`	`return (pg_wchar) (((c[0]&0x1f) <<6) \|`
`177`	`176`	`(c[1]&0x3f));`
`178`		`-}`
`179`	`177`	`elseif ((*c&0xf0)==0xe0)`
`180`		`-{`
`181`	`178`	`return (pg_wchar) (((c[0]&0x0f) <<12) \|`
`182`	`179`	`((c[1]&0x3f) <<6) \|`
`183`	`180`	`(c[2]&0x3f));`
`184`		`-}`
`185`		`-elseif ((*c&0xf0)==0xf0)`
`186`		`-{`
	`181`	`+elseif ((*c&0xf8)==0xf0)`
`187`	`182`	`return (pg_wchar) (((c[0]&0x07) <<18) \|`
`188`	`183`	`((c[1]&0x3f) <<12) \|`
`189`	`184`	`((c[2]&0x3f) <<6) \|`
`190`	`185`	`(c[3]&0x3f));`
`191`		`-}`
`192`	`186`	`else`
`193`		`-{`
`194`	`187`	`/* that is an invalid code on purpose */`
`195`	`188`	`return0xffffffff;`
`196`		`-}`
`197`	`189`	`}`
`198`	`190`
`199`	`191`	`/* mb_utf_wcwidth : calculate column length for the utf8 string pwcs`

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`‎src/bin/psql/mbprint.c`

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