# This set of tests is for UTF-16 and UTF-32 support, including Unicode
# properties. It is relevant only to the 16-bit and 32-bit libraries. The
# output is different for each library, so there are separate output files.

/ÃÃÃxxx/IB,utf,no_utf_check
** Failed: invalid UTF-8 string cannot be converted to 16-bit string

/abc/utf
    Ã]
** Failed: invalid UTF-8 string cannot be used as input in UTF mode

# Check maximum character size 

/\x{ffff}/IB,utf
------------------------------------------------------------------
        Bra
        \x{ffff}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{ffff}
Subject length lower bound = 1

/\x{10000}/IB,utf
------------------------------------------------------------------
        Bra
        \x{10000}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{d800}
Last code unit = \x{dc00}
Subject length lower bound = 1

/\x{100}/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{100}
Subject length lower bound = 1

/\x{1000}/IB,utf
------------------------------------------------------------------
        Bra
        \x{1000}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{1000}
Subject length lower bound = 1

/\x{10000}/IB,utf
------------------------------------------------------------------
        Bra
        \x{10000}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{d800}
Last code unit = \x{dc00}
Subject length lower bound = 1

/\x{100000}/IB,utf
------------------------------------------------------------------
        Bra
        \x{100000}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{dbc0}
Last code unit = \x{dc00}
Subject length lower bound = 1

/\x{10ffff}/IB,utf
------------------------------------------------------------------
        Bra
        \x{10ffff}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{dbff}
Last code unit = \x{dfff}
Subject length lower bound = 1

/[\x{ff}]/IB,utf
------------------------------------------------------------------
        Bra
        \x{ff}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \xff
Subject length lower bound = 1

/[\x{100}]/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{100}
Subject length lower bound = 1

/\x80/IB,utf
------------------------------------------------------------------
        Bra
        \x{80}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x80
Subject length lower bound = 1

/\xff/IB,utf
------------------------------------------------------------------
        Bra
        \x{ff}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \xff
Subject length lower bound = 1

/\x{D55c}\x{ad6d}\x{C5B4}/IB,utf
------------------------------------------------------------------
        Bra
        \x{d55c}\x{ad6d}\x{c5b4}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{d55c}
Last code unit = \x{c5b4}
Subject length lower bound = 3
    \x{D55c}\x{ad6d}\x{C5B4}
 0: \x{d55c}\x{ad6d}\x{c5b4}

/\x{65e5}\x{672c}\x{8a9e}/IB,utf
------------------------------------------------------------------
        Bra
        \x{65e5}\x{672c}\x{8a9e}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{65e5}
Last code unit = \x{8a9e}
Subject length lower bound = 3
    \x{65e5}\x{672c}\x{8a9e}
 0: \x{65e5}\x{672c}\x{8a9e}

/\x{80}/IB,utf
------------------------------------------------------------------
        Bra
        \x{80}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x80
Subject length lower bound = 1

/\x{084}/IB,utf
------------------------------------------------------------------
        Bra
        \x{84}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x84
Subject length lower bound = 1

/\x{104}/IB,utf
------------------------------------------------------------------
        Bra
        \x{104}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{104}
Subject length lower bound = 1

/\x{861}/IB,utf
------------------------------------------------------------------
        Bra
        \x{861}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{861}
Subject length lower bound = 1

/\x{212ab}/IB,utf
------------------------------------------------------------------
        Bra
        \x{212ab}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{d844}
Last code unit = \x{deab}
Subject length lower bound = 1

/[^ab\xC0-\xF0]/IB,utf
------------------------------------------------------------------
        Bra
        [\x00-`c-\xbf\xf1-\xff] (neg)
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0a 
  \x0b \x0c \x0d \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 
  \x1a \x1b \x1c \x1d \x1e \x1f \x20 ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 
  5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y 
  Z [ \ ] ^ _ ` c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ \x7f 
  \x80 \x81 \x82 \x83 \x84 \x85 \x86 \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e 
  \x8f \x90 \x91 \x92 \x93 \x94 \x95 \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d 
  \x9e \x9f \xa0 \xa1 \xa2 \xa3 \xa4 \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac 
  \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb 
  \xbc \xbd \xbe \xbf \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb 
  \xfc \xfd \xfe \xff 
Subject length lower bound = 1
    \x{f1}
 0: \x{f1}
    \x{bf}
 0: \x{bf}
    \x{100}
 0: \x{100}
    \x{1000}
 0: \x{1000}
\= Expect no match
    \x{c0}
No match
    \x{f0}
No match

/Ä€{3,4}/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}{3}
        \x{100}?+
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{100}
Last code unit = \x{100}
Subject length lower bound = 3
  \x{100}\x{100}\x{100}\x{100\x{100}
 0: \x{100}\x{100}\x{100}

/(\x{100}+|x)/IB,utf
------------------------------------------------------------------
        Bra
        CBra 1
        \x{100}++
        Alt
        x
        Ket
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: utf
Starting code units: x \xff 
Subject length lower bound = 1

/(\x{100}*a|x)/IB,utf
------------------------------------------------------------------
        Bra
        CBra 1
        \x{100}*+
        a
        Alt
        x
        Ket
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: utf
Starting code units: a x \xff 
Subject length lower bound = 1

/(\x{100}{0,2}a|x)/IB,utf
------------------------------------------------------------------
        Bra
        CBra 1
        \x{100}{0,2}+
        a
        Alt
        x
        Ket
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: utf
Starting code units: a x \xff 
Subject length lower bound = 1

/(\x{100}{1,2}a|x)/IB,utf
------------------------------------------------------------------
        Bra
        CBra 1
        \x{100}
        \x{100}{0,1}+
        a
        Alt
        x
        Ket
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: utf
Starting code units: x \xff 
Subject length lower bound = 1

/\x{100}/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{100}
Subject length lower bound = 1

/a\x{100}\x{101}*/IB,utf
------------------------------------------------------------------
        Bra
        a\x{100}
        \x{101}*+
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = 'a'
Last code unit = \x{100}
Subject length lower bound = 2

/a\x{100}\x{101}+/IB,utf
------------------------------------------------------------------
        Bra
        a\x{100}
        \x{101}++
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = 'a'
Last code unit = \x{101}
Subject length lower bound = 3

/[^\x{c4}]/IB
------------------------------------------------------------------
        Bra
        [^\x{c4}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Subject length lower bound = 1

/[\x{100}]/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{100}
Subject length lower bound = 1
    \x{100}
 0: \x{100}
    Z\x{100}
 0: \x{100}
    \x{100}Z
 0: \x{100}

/[\xff]/IB,utf
------------------------------------------------------------------
        Bra
        \x{ff}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \xff
Subject length lower bound = 1
    >\x{ff}<
 0: \x{ff}

/[^\xff]/IB,utf
------------------------------------------------------------------
        Bra
        [^\x{ff}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Subject length lower bound = 1

/\x{100}abc(xyz(?1))/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}abc
        CBra 1
        xyz
        Recurse
        Ket
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: utf
First code unit = \x{100}
Last code unit = 'z'
Subject length lower bound = 7

/\777/I,utf
Capturing subpattern count = 0
Options: utf
First code unit = \x{1ff}
Subject length lower bound = 1
  \x{1ff}
 0: \x{1ff}
  \777
 0: \x{1ff}

/\x{100}+\x{200}/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}++
        \x{200}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{100}
Last code unit = \x{200}
Subject length lower bound = 2

/\x{100}+X/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}++
        X
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = \x{100}
Last code unit = 'X'
Subject length lower bound = 2

/^[\QĀ\E-\Q�\E/B,utf
Failed: error 106 at offset 13: missing terminating ] for character class

/X/utf
    XX\x{d800}\=no_utf_check
 0: X
    XX\x{da00}\=no_utf_check
 0: X
    XX\x{dc00}\=no_utf_check
 0: X
    XX\x{de00}\=no_utf_check
 0: X
    XX\x{dfff}\=no_utf_check
 0: X
\= Expect UTF error
    XX\x{d800}
Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
    XX\x{da00}
Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2
    XX\x{dc00}
Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
    XX\x{de00}
Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
    XX\x{dfff}
Failed: error -26: UTF-16 error: isolated low surrogate at offset 2
    XX\x{110000}
** Failed: character \x{110000} is greater than 0x10ffff and so cannot be converted to UTF-16
    XX\x{d800}\x{1234}
Failed: error -25: UTF-16 error: invalid low surrogate at offset 3
\= Expect no match
    XX\x{d800}\=offset=3
No match
    
/(?<=.)X/utf
    XX\x{d800}\=offset=3
Failed: error -24: UTF-16 error: missing low surrogate at end at offset 2

/(*UTF16)\x{11234}/
  abcd\x{11234}pqr
 0: \x{11234}

/(*UTF)\x{11234}/I
Capturing subpattern count = 0
Compile options: <none>
Overall options: utf
First code unit = \x{d804}
Last code unit = \x{de34}
Subject length lower bound = 1
  abcd\x{11234}pqr
 0: \x{11234}

/(*UTF-32)\x{11234}/
Failed: error 160 at offset 5: (*VERB) not recognized or malformed
  abcd\x{11234}pqr

/(*UTF-32)\x{112}/
Failed: error 160 at offset 5: (*VERB) not recognized or malformed
  abcd\x{11234}pqr

/(*CRLF)(*UTF16)(*BSR_UNICODE)a\Rb/I
Capturing subpattern count = 0
Compile options: <none>
Overall options: utf
\R matches any Unicode newline
Forced newline is CRLF
First code unit = 'a'
Last code unit = 'b'
Subject length lower bound = 3

/(*CRLF)(*UTF32)(*BSR_UNICODE)a\Rb/I
Failed: error 160 at offset 14: (*VERB) not recognized or malformed

/\h/I,utf
Capturing subpattern count = 0
Options: utf
Starting code units: \x09 \x20 \xa0 \xff 
Subject length lower bound = 1
    ABC\x{09}
 0: \x{09}
    ABC\x{20}
 0:  
    ABC\x{a0}
 0: \x{a0}
    ABC\x{1680}
 0: \x{1680}
    ABC\x{180e}
 0: \x{180e}
    ABC\x{2000}
 0: \x{2000}
    ABC\x{202f}
 0: \x{202f}
    ABC\x{205f}
 0: \x{205f}
    ABC\x{3000}
 0: \x{3000}

/\v/I,utf
Capturing subpattern count = 0
Options: utf
Starting code units: \x0a \x0b \x0c \x0d \x85 \xff 
Subject length lower bound = 1
    ABC\x{0a}
 0: \x{0a}
    ABC\x{0b}
 0: \x{0b}
    ABC\x{0c}
 0: \x{0c}
    ABC\x{0d}
 0: \x{0d}
    ABC\x{85}
 0: \x{85}
    ABC\x{2028}
 0: \x{2028}

/\h*A/I,utf
Capturing subpattern count = 0
Options: utf
Starting code units: \x09 \x20 A \xa0 \xff 
Last code unit = 'A'
Subject length lower bound = 1
    CDBABC
 0: A
    \x{2000}ABC
 0: \x{2000}A

/\R*A/I,bsr=unicode,utf
Capturing subpattern count = 0
Options: utf
\R matches any Unicode newline
Starting code units: \x0a \x0b \x0c \x0d A \x85 \xff 
Last code unit = 'A'
Subject length lower bound = 1
    CDBABC
 0: A
    \x{2028}A
 0: \x{2028}A

/\v+A/I,utf
Capturing subpattern count = 0
Options: utf
Starting code units: \x0a \x0b \x0c \x0d \x85 \xff 
Last code unit = 'A'
Subject length lower bound = 2

/\s?xxx\s/I,utf
Capturing subpattern count = 0
Options: utf
Starting code units: \x09 \x0a \x0b \x0c \x0d \x20 x 
Last code unit = 'x'
Subject length lower bound = 4

/\sxxx\s/I,utf,tables=2
Capturing subpattern count = 0
Options: utf
Starting code units: \x09 \x0a \x0b \x0c \x0d \x20 \x85 \xa0 
Last code unit = 'x'
Subject length lower bound = 5
    AB\x{85}xxx\x{a0}XYZ
 0: \x{85}xxx\x{a0}
    AB\x{a0}xxx\x{85}XYZ
 0: \x{a0}xxx\x{85}

/\S \S/I,utf,tables=2
Capturing subpattern count = 0
Options: utf
Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x0e \x0f 
  \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 \x1a \x1b \x1c \x1d \x1e 
  \x1f ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C 
  D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h 
  i j k l m n o p q r s t u v w x y z { | } ~ \x7f \x80 \x81 \x82 \x83 \x84 
  \x86 \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 \x93 \x94 
  \x95 \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa1 \xa2 \xa3 \xa4 
  \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 
  \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf \xc0 \xc1 \xc2 
  \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf \xd0 \xd1 
  \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde \xdf \xe0 
  \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed \xee \xef 
  \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb \xfc \xfd \xfe 
  \xff 
Last code unit = ' '
Subject length lower bound = 3
    \x{a2} \x{84}
 0: \x{a2} \x{84}
    A Z
 0: A Z

/a+/utf
    a\x{123}aa\=offset=1
 0: aa
    a\x{123}aa\=offset=2
 0: aa
    a\x{123}aa\=offset=3
 0: a
\= Expect no match
    a\x{123}aa\=offset=4
No match
\= Expect bad offset error     
    a\x{123}aa\=offset=5
Failed: error -33: bad offset value
    a\x{123}aa\=offset=6
Failed: error -33: bad offset value

/\x{1234}+/Ii,utf
Capturing subpattern count = 0
Options: caseless utf
First code unit = \x{1234}
Subject length lower bound = 1

/\x{1234}+?/Ii,utf
Capturing subpattern count = 0
Options: caseless utf
First code unit = \x{1234}
Subject length lower bound = 1

/\x{1234}++/Ii,utf
Capturing subpattern count = 0
Options: caseless utf
First code unit = \x{1234}
Subject length lower bound = 1

/\x{1234}{2}/Ii,utf
Capturing subpattern count = 0
Options: caseless utf
First code unit = \x{1234}
Last code unit = \x{1234}
Subject length lower bound = 2

/[^\x{c4}]/IB,utf
------------------------------------------------------------------
        Bra
        [^\x{c4}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Subject length lower bound = 1

/X+\x{200}/IB,utf
------------------------------------------------------------------
        Bra
        X++
        \x{200}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = 'X'
Last code unit = \x{200}
Subject length lower bound = 2

/\R/I,utf
Capturing subpattern count = 0
Options: utf
Starting code units: \x0a \x0b \x0c \x0d \x85 \xff 
Subject length lower bound = 1

# Check bad offset 

/a/utf
\= Expect bad UTF-16 offset, or no match in 32-bit
    \x{10000}\=offset=1
Error -36 (bad UTF-16 offset)
    \x{10000}ab\=offset=1
Error -36 (bad UTF-16 offset)
\= Expect 16-bit match, 32-bit no match
    \x{10000}ab\=offset=2
 0: a
\= Expect no match     
    \x{10000}ab\=offset=3
No match
\= Expect no match in 16-bit, bad offset in 32-bit    
    \x{10000}ab\=offset=4
No match
\= Expect bad offset     
    \x{10000}ab\=offset=5
Failed: error -33: bad offset value

/í¼€/utf
Failed: error -26 at offset 0: UTF-16 error: isolated low surrogate

/\w+\x{C4}/B,utf
------------------------------------------------------------------
        Bra
        \w++
        \x{c4}
        Ket
        End
------------------------------------------------------------------
    a\x{C4}\x{C4}
 0: a\x{c4}

/\w+\x{C4}/B,utf,tables=2
------------------------------------------------------------------
        Bra
        \w+
        \x{c4}
        Ket
        End
------------------------------------------------------------------
    a\x{C4}\x{C4}
 0: a\x{c4}\x{c4}
    
/\W+\x{C4}/B,utf
------------------------------------------------------------------
        Bra
        \W+
        \x{c4}
        Ket
        End
------------------------------------------------------------------
    !\x{C4}
 0: !\x{c4}
 
/\W+\x{C4}/B,utf,tables=2
------------------------------------------------------------------
        Bra
        \W++
        \x{c4}
        Ket
        End
------------------------------------------------------------------
    !\x{C4}
 0: !\x{c4}

/\W+\x{A1}/B,utf
------------------------------------------------------------------
        Bra
        \W+
        \x{a1}
        Ket
        End
------------------------------------------------------------------
    !\x{A1}
 0: !\x{a1}
 
/\W+\x{A1}/B,utf,tables=2
------------------------------------------------------------------
        Bra
        \W+
        \x{a1}
        Ket
        End
------------------------------------------------------------------
    !\x{A1}
 0: !\x{a1}

/X\s+\x{A0}/B,utf
------------------------------------------------------------------
        Bra
        X
        \s++
        \x{a0}
        Ket
        End
------------------------------------------------------------------
    X\x20\x{A0}\x{A0}
 0: X \x{a0}

/X\s+\x{A0}/B,utf,tables=2
------------------------------------------------------------------
        Bra
        X
        \s+
        \x{a0}
        Ket
        End
------------------------------------------------------------------
    X\x20\x{A0}\x{A0}
 0: X \x{a0}\x{a0}

/\S+\x{A0}/B,utf
------------------------------------------------------------------
        Bra
        \S+
        \x{a0}
        Ket
        End
------------------------------------------------------------------
    X\x{A0}\x{A0}
 0: X\x{a0}\x{a0}

/\S+\x{A0}/B,utf,tables=2
------------------------------------------------------------------
        Bra
        \S++
        \x{a0}
        Ket
        End
------------------------------------------------------------------
    X\x{A0}\x{A0}
 0: X\x{a0}

/\x{a0}+\s!/B,utf
------------------------------------------------------------------
        Bra
        \x{a0}++
        \s
        !
        Ket
        End
------------------------------------------------------------------
    \x{a0}\x20!
 0: \x{a0} !

/\x{a0}+\s!/B,utf,tables=2
------------------------------------------------------------------
        Bra
        \x{a0}+
        \s
        !
        Ket
        End
------------------------------------------------------------------
    \x{a0}\x20!
 0: \x{a0} !

/(*UTF)abc/never_utf
Failed: error 174 at offset 6: using UTF is disabled by the application

/abc/utf,never_utf
Failed: error 174 at offset 0: using UTF is disabled by the application

/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/IBi,utf
------------------------------------------------------------------
        Bra
     /i A\x{391}\x{10427}\x{ff3a}\x{1fb0}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless utf
First code unit = 'A' (caseless)
Last code unit = \x{1fb0} (caseless)
Subject length lower bound = 5

/A\x{391}\x{10427}\x{ff3a}\x{1fb0}/IB,utf
------------------------------------------------------------------
        Bra
        A\x{391}\x{10427}\x{ff3a}\x{1fb0}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = 'A'
Last code unit = \x{1fb0}
Subject length lower bound = 5

/AB\x{1fb0}/IB,utf
------------------------------------------------------------------
        Bra
        AB\x{1fb0}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
First code unit = 'A'
Last code unit = \x{1fb0}
Subject length lower bound = 3

/AB\x{1fb0}/IBi,utf
------------------------------------------------------------------
        Bra
     /i AB\x{1fb0}
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless utf
First code unit = 'A' (caseless)
Last code unit = \x{1fb0} (caseless)
Subject length lower bound = 3

/\x{401}\x{420}\x{421}\x{422}\x{423}\x{424}\x{425}\x{426}\x{427}\x{428}\x{429}\x{42a}\x{42b}\x{42c}\x{42d}\x{42e}\x{42f}/Ii,utf
Capturing subpattern count = 0
Options: caseless utf
First code unit = \x{401} (caseless)
Last code unit = \x{42f} (caseless)
Subject length lower bound = 17
    \x{401}\x{420}\x{421}\x{422}\x{423}\x{424}\x{425}\x{426}\x{427}\x{428}\x{429}\x{42a}\x{42b}\x{42c}\x{42d}\x{42e}\x{42f}
 0: \x{401}\x{420}\x{421}\x{422}\x{423}\x{424}\x{425}\x{426}\x{427}\x{428}\x{429}\x{42a}\x{42b}\x{42c}\x{42d}\x{42e}\x{42f}
    \x{451}\x{440}\x{441}\x{442}\x{443}\x{444}\x{445}\x{446}\x{447}\x{448}\x{449}\x{44a}\x{44b}\x{44c}\x{44d}\x{44e}\x{44f}
 0: \x{451}\x{440}\x{441}\x{442}\x{443}\x{444}\x{445}\x{446}\x{447}\x{448}\x{449}\x{44a}\x{44b}\x{44c}\x{44d}\x{44e}\x{44f}

/[â±¥]/Bi,utf
------------------------------------------------------------------
        Bra
     /i \x{2c65}
        Ket
        End
------------------------------------------------------------------

/[^â±¥]/Bi,utf
------------------------------------------------------------------
        Bra
     /i [^\x{2c65}]
        Ket
        End
------------------------------------------------------------------

/[[:blank:]]/B,ucp
------------------------------------------------------------------
        Bra
        [\x09 \xa0\x{1680}\x{180e}\x{2000}-\x{200a}\x{202f}\x{205f}\x{3000}]
        Ket
        End
------------------------------------------------------------------

/\x{212a}+/Ii,utf
Capturing subpattern count = 0
Options: caseless utf
Starting code units: K k \xff 
Subject length lower bound = 1
    KKkk\x{212a}
 0: KKkk\x{212a}

/s+/Ii,utf
Capturing subpattern count = 0
Options: caseless utf
Starting code units: S s \xff 
Subject length lower bound = 1
    SSss\x{17f}
 0: SSss\x{17f}

# Non-UTF characters should give errors in both 16-bit and 32-bit modes.

/\x{110000}/utf
Failed: error 134 at offset 9: character code point value in \x{} or \o{} is too large

/\o{4200000}/utf
Failed: error 134 at offset 10: character code point value in \x{} or \o{} is too large

/\x{100}*A/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*+
        A
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: A \xff 
Last code unit = 'A'
Subject length lower bound = 1
    A
 0: A

/\x{100}*\d(?R)/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*+
        \d
        Recurse
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: 0 1 2 3 4 5 6 7 8 9 \xff 
Subject length lower bound = 1

/[Z\x{100}]/IB,utf
------------------------------------------------------------------
        Bra
        [Z\x{100}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: Z \xff 
Subject length lower bound = 1
    Z\x{100}
 0: Z
    \x{100}
 0: \x{100}
    \x{100}Z
 0: \x{100}

/[z-\x{100}]/IB,utf
------------------------------------------------------------------
        Bra
        [z-\xff\x{100}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: z { | } ~ \x7f \x80 \x81 \x82 \x83 \x84 \x85 \x86 \x87 
  \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 \x93 \x94 \x95 \x96 
  \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 \xa1 \xa2 \xa3 \xa4 \xa5 
  \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 \xb4 
  \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf \xc0 \xc1 \xc2 \xc3 
  \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf \xd0 \xd1 \xd2 
  \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde \xdf \xe0 \xe1 
  \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed \xee \xef \xf0 
  \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb \xfc \xfd \xfe \xff 
Subject length lower bound = 1

/[z\Qa-d]Ä€\E]/IB,utf
------------------------------------------------------------------
        Bra
        [\-\]adz\x{100}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: - ] a d z \xff 
Subject length lower bound = 1
    \x{100}
 0: \x{100}
    Ā 
 0: \x{100}

/[ab\x{100}]abc(xyz(?1))/IB,utf
------------------------------------------------------------------
        Bra
        [ab\x{100}]
        abc
        CBra 1
        xyz
        Recurse
        Ket
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: utf
Starting code units: a b \xff 
Last code unit = 'z'
Subject length lower bound = 7

/\x{100}*\s/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*+
        \s
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: \x09 \x0a \x0b \x0c \x0d \x20 \xff 
Subject length lower bound = 1

/\x{100}*\d/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*+
        \d
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: 0 1 2 3 4 5 6 7 8 9 \xff 
Subject length lower bound = 1

/\x{100}*\w/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*+
        \w
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P 
  Q R S T U V W X Y Z _ a b c d e f g h i j k l m n o p q r s t u v w x y z 
  \xff 
Subject length lower bound = 1

/\x{100}*\D/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*
        \D
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0a 
  \x0b \x0c \x0d \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 
  \x1a \x1b \x1c \x1d \x1e \x1f \x20 ! " # $ % & ' ( ) * + , - . / : ; < = > 
  ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c 
  d e f g h i j k l m n o p q r s t u v w x y z { | } ~ \x7f \x80 \x81 \x82 
  \x83 \x84 \x85 \x86 \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 
  \x92 \x93 \x94 \x95 \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 
  \xa1 \xa2 \xa3 \xa4 \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf 
  \xb0 \xb1 \xb2 \xb3 \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe 
  \xbf \xc0 \xc1 \xc2 \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd 
  \xce \xcf \xd0 \xd1 \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc 
  \xdd \xde \xdf \xe0 \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb 
  \xec \xed \xee \xef \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa 
  \xfb \xfc \xfd \xfe \xff 
Subject length lower bound = 1

/\x{100}*\S/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*
        \S
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x0e \x0f 
  \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 \x1a \x1b \x1c \x1d \x1e 
  \x1f ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C 
  D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h 
  i j k l m n o p q r s t u v w x y z { | } ~ \x7f \x80 \x81 \x82 \x83 \x84 
  \x85 \x86 \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 \x93 
  \x94 \x95 \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 \xa1 \xa2 
  \xa3 \xa4 \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 \xb1 
  \xb2 \xb3 \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf \xc0 
  \xc1 \xc2 \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf 
  \xd0 \xd1 \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde 
  \xdf \xe0 \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed 
  \xee \xef \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb \xfc 
  \xfd \xfe \xff 
Subject length lower bound = 1

/\x{100}*\W/IB,utf
------------------------------------------------------------------
        Bra
        \x{100}*
        \W
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: utf
Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0a 
  \x0b \x0c \x0d \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 
  \x1a \x1b \x1c \x1d \x1e \x1f \x20 ! " # $ % & ' ( ) * + , - . / : ; < = > 
  ? @ [ \ ] ^ ` { | } ~ \x7f \x80 \x81 \x82 \x83 \x84 \x85 \x86 \x87 \x88 \x89 
  \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 \x93 \x94 \x95 \x96 \x97 \x98 
  \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 \xa1 \xa2 \xa3 \xa4 \xa5 \xa6 \xa7 
  \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 \xb4 \xb5 \xb6 
  \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf \xc0 \xc1 \xc2 \xc3 \xc4 \xc5 
  \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf \xd0 \xd1 \xd2 \xd3 \xd4 
  \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde \xdf \xe0 \xe1 \xe2 \xe3 
  \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed \xee \xef \xf0 \xf1 \xf2 
  \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb \xfc \xfd \xfe \xff 
Subject length lower bound = 1

/[\x{105}-\x{109}]/IBi,utf
------------------------------------------------------------------
        Bra
        [\x{104}-\x{109}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless utf
Starting code units: \xff 
Subject length lower bound = 1
    \x{104}
 0: \x{104}
    \x{105}
 0: \x{105}
    \x{109}  
 0: \x{109}
\= Expect no match
    \x{100}
No match
    \x{10a} 
No match
    
/[z-\x{100}]/IBi,utf
------------------------------------------------------------------
        Bra
        [Zz-\xff\x{39c}\x{3bc}\x{212b}\x{1e9e}\x{212b}\x{178}\x{100}-\x{101}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless utf
Starting code units: Z z { | } ~ \x7f \x80 \x81 \x82 \x83 \x84 \x85 \x86 
  \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 \x93 \x94 \x95 
  \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 \xa1 \xa2 \xa3 \xa4 
  \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 
  \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf \xc0 \xc1 \xc2 
  \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf \xd0 \xd1 
  \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde \xdf \xe0 
  \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed \xee \xef 
  \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb \xfc \xfd \xfe 
  \xff 
Subject length lower bound = 1
    Z
 0: Z
    z
 0: z
    \x{39c}
 0: \x{39c}
    \x{178}
 0: \x{178}
    |
 0: |
    \x{80}
 0: \x{80}
    \x{ff}
 0: \x{ff}
    \x{100}
 0: \x{100}
    \x{101} 
 0: \x{101}
\= Expect no match
    \x{102}
No match
    Y
No match
    y           
No match

/[z-\x{100}]/IBi,utf
------------------------------------------------------------------
        Bra
        [Zz-\xff\x{39c}\x{3bc}\x{212b}\x{1e9e}\x{212b}\x{178}\x{100}-\x{101}]
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless utf
Starting code units: Z z { | } ~ \x7f \x80 \x81 \x82 \x83 \x84 \x85 \x86 
  \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 \x93 \x94 \x95 
  \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 \xa1 \xa2 \xa3 \xa4 
  \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 
  \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf \xc0 \xc1 \xc2 
  \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf \xd0 \xd1 
  \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde \xdf \xe0 
  \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed \xee \xef 
  \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb \xfc \xfd \xfe 
  \xff 
Subject length lower bound = 1

/\x{3a3}B/IBi,utf
------------------------------------------------------------------
        Bra
        clist 03a3 03c2 03c3
     /i B
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless utf
Starting code units: \xff 
Last code unit = 'B' (caseless)
Subject length lower bound = 2

/./utf
    \x{110000}
** Failed: character \x{110000} is greater than 0x10ffff and so cannot be converted to UTF-16

/(*UTF)abý¿¿¿¿¿z/B
------------------------------------------------------------------
        Bra
        ab\x{fd}\x{bf}\x{bf}\x{bf}\x{bf}\x{bf}z
        Ket
        End
------------------------------------------------------------------

/abý¿¿¿¿¿z/utf
** Failed: character value greater than 0x10ffff cannot be converted to UTF

/[\W\p{Any}]/B
------------------------------------------------------------------
        Bra
        [\x00-/:-@[-^`{-\xff\p{Any}\x{100}-\x{ffff}]
        Ket
        End
------------------------------------------------------------------
    abc
 0: a
    123 
 0: 1

/[\W\pL]/B
------------------------------------------------------------------
        Bra
        [\x00-/:-@[-^`{-\xff\p{L}\x{100}-\x{ffff}]
        Ket
        End
------------------------------------------------------------------
    abc
 0: a
    \x{100}
 0: \x{100}
    \x{308}  
 0: \x{308}
\= Expect no match
    123     
No match

/[\s[:^ascii:]]/B,ucp
------------------------------------------------------------------
        Bra
        [\x80-\xff\p{Xsp}\x{100}-\x{ffff}]
        Ket
        End
------------------------------------------------------------------

/\pP/ucp
    \x{7fffffff}
** Character \x{7fffffff} is greater than 0xffff and UTF-16 mode is not enabled.
** Truncation will probably give the wrong result.
No match

# A special extra option allows excaped surrogate code points in 32-bit mode,
# but subjects containing them must not be UTF-checked. These patterns give
# errors in 16-bit mode.

/\x{d800}/I,utf,allow_surrogate_escapes
Failed: error 191 at offset 0: PCRE2_EXTRA_ALLOW_SURROGATE_ESCAPES is not allowed in UTF-16 mode
    \x{d800}\=no_utf_check

/\udfff\o{157401}/utf,alt_bsux,allow_surrogate_escapes
Failed: error 191 at offset 0: PCRE2_EXTRA_ALLOW_SURROGATE_ESCAPES is not allowed in UTF-16 mode
    \x{dfff}\x{df01}\=no_utf_check

# This has different starting code units in 8-bit mode. 

/^[^ab]/IB,utf
------------------------------------------------------------------
        Bra
        ^
        [\x00-`c-\xff] (neg)
        Ket
        End
------------------------------------------------------------------
Capturing subpattern count = 0
Compile options: utf
Overall options: anchored utf
Starting code units: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0a 
  \x0b \x0c \x0d \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 
  \x1a \x1b \x1c \x1d \x1e \x1f \x20 ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 
  5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y 
  Z [ \ ] ^ _ ` c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ \x7f 
  \x80 \x81 \x82 \x83 \x84 \x85 \x86 \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e 
  \x8f \x90 \x91 \x92 \x93 \x94 \x95 \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d 
  \x9e \x9f \xa0 \xa1 \xa2 \xa3 \xa4 \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac 
  \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb 
  \xbc \xbd \xbe \xbf \xc0 \xc1 \xc2 \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca 
  \xcb \xcc \xcd \xce \xcf \xd0 \xd1 \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 
  \xda \xdb \xdc \xdd \xde \xdf \xe0 \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 
  \xe9 \xea \xeb \xec \xed \xee \xef \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 
  \xf8 \xf9 \xfa \xfb \xfc \xfd \xfe \xff 
Subject length lower bound = 1
    c
 0: c
    \x{ff}
 0: \x{ff}
    \x{100}
 0: \x{100}
\= Expect no match
    aaa
No match
    
# Offsets are different in 8-bit mode. 

/(?<=abc)(|def)/g,utf,replace=<$0>,substitute_callout
    123abcáyzabcdef789abcሴqr
 1(2) Old 6 6 "" New 6 8 "<>"
 2(2) Old 12 12 "" New 14 16 "<>"
 3(2) Old 12 15 "def" New 16 21 "<def>"
 4(2) Old 21 21 "" New 27 29 "<>"
 4: 123abc<>\x{e1}yzabc<><def>789abc<>\x{1234}qr
    
# A few script run tests in non-UTF mode (but they need Unicode support)

/^(*script_run:.{4})/
    \x{3041}\x{30a1}\x{3007}\x{3007}   Hiragana Katakana Han Han
 0: \x{3041}\x{30a1}\x{3007}\x{3007}
    \x{30a1}\x{3041}\x{3007}\x{3007}   Katakana Hiragana Han Han
 0: \x{30a1}\x{3041}\x{3007}\x{3007}
    \x{1100}\x{2e80}\x{2e80}\x{1101}   Hangul Han Han Hangul
 0: \x{1100}\x{2e80}\x{2e80}\x{1101}
 
/^(*sr:.*)/utf,allow_surrogate_escapes
Failed: error 191 at offset 0: PCRE2_EXTRA_ALLOW_SURROGATE_ESCAPES is not allowed in UTF-16 mode
    \x{2e80}\x{3105}\x{2e80}\x{30a1}   Han Bopomofo Han Katakana
    \x{d800}\x{dfff}                   Surrogates (Unknown) \=no_utf_check

# End of testinput12