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[wxWidgets.git] / tests / regex / reg.test

# reg.test --
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands.  Sourcing this file into Tcl runs the tests and
# generates output for errors.  No output means no errors were found.
# (Don't panic if you are seeing this as part of the reg distribution
# and aren't using Tcl -- reg's own regression tester also knows how
# to read this file, ignoring the Tcl-isms.)
#
# Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
#
# RCS: @(#) $Id$

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest 2
    namespace import -force ::tcltest::*
}

# All tests require the testregexp command, return if this
# command doesn't exist

::tcltest::testConstraint testregexp \
        [expr {[info commands testregexp] != {}}]
::tcltest::testConstraint localeRegexp 0

# This file uses some custom procedures, defined below, for regexp regression
# testing.  The name of the procedure indicates the general nature of the
# test:
#       e       compile error expected
#       f       match failure expected
#       m       successful match
#       i       successful match with -indices (used in checking things like
#               nonparticipating subexpressions)
#       p       unsuccessful match with -indices (!!) (used in checking
#               partial-match reporting)
# There is also "doing" which sets up title and major test number for each
# block of tests.

# The first 3 arguments are constant:  a minor number (which often gets
# a letter or two suffixed to it internally), some flags, and the RE itself.
# For e, the remaining argument is the name of the compile error expected,
# less the leading "REG_".  For the rest, the next argument is the string
# to try the match against.  Remaining arguments are the substring expected
# to be matched, and any substrings expected to be matched by subexpressions.
# (For f, these arguments are optional, and if present are ignored except
# that they indicate how many subexpressions should be present in the RE.)
# It is an error for the number of subexpression arguments to be wrong.
# Cases involving nonparticipating subexpressions, checking where empty
# substrings are located, etc. should be done using i and p.

# The flag characters are complex and a bit eclectic.  Generally speaking, 
# lowercase letters are compile options, uppercase are expected re_info
# bits, and nonalphabetics are match options, controls for how the test is 
# run, or testing options.  The one small surprise is that AREs are the
# default, and you must explicitly request lesser flavors of RE.  The flags
# are as follows.  It is admitted that some are not very mnemonic.
# There are some others which are purely debugging tools and are not
# useful in this file.
#
#       -       no-op (placeholder)
#       +       provide fake xy equivalence class and ch collating element
#       %       force small state-set cache in matcher (to test cache replace)
#       ^       beginning of string is not beginning of line
#       $       end of string is not end of line
#       *       test is Unicode-specific, needs big character set
#
#       &       test as both ARE and BRE
#       b       BRE
#       e       ERE
#       a       turn advanced-features bit on (error unless ERE already)
#       q       literal string, no metacharacters at all
#
#       i       case-independent matching
#       o       ("opaque") no subexpression capture
#       p       newlines are half-magic, excluded from . and [^ only
#       w       newlines are half-magic, significant to ^ and $ only
#       n       newlines are fully magic, both effects
#       x       expanded RE syntax
#       t       incomplete-match reporting
#
#       A       backslash-_a_lphanumeric seen
#       B       ERE/ARE literal-_b_race heuristic used
#       E       backslash (_e_scape) seen within []
#       H       looka_h_ead constraint seen
#       I       _i_mpossible to match
#       L       _l_ocale-specific construct seen
#       M       unportable (_m_achine-specific) construct seen
#       N       RE can match empty (_n_ull) string
#       P       non-_P_OSIX construct seen
#       Q       {} _q_uantifier seen
#       R       back _r_eference seen
#       S       POSIX-un_s_pecified syntax seen
#       T       prefers shortest (_t_iny)
#       U       saw original-POSIX botch:  unmatched right paren in ERE (_u_gh)

# The one area we can't easily test is memory-allocation failures (which
# are hard to provoke on command).  Embedded NULs also are not tested at
# the moment, but this is a historical accident which should be fixed.



# test procedures and related

set ask "about"
set xflags "xflags"
set testbypassed 0

# re_info abbreviation mapping table
set infonames(A) "REG_UBSALNUM"
set infonames(B) "REG_UBRACES"
set infonames(E) "REG_UBBS"
set infonames(H) "REG_ULOOKAHEAD"
set infonames(I) "REG_UIMPOSSIBLE"
set infonames(L) "REG_ULOCALE"
set infonames(M) "REG_UUNPORT"
set infonames(N) "REG_UEMPTYMATCH"
set infonames(P) "REG_UNONPOSIX"
set infonames(Q) "REG_UBOUNDS"
set infonames(R) "REG_UBACKREF"
set infonames(S) "REG_UUNSPEC"
set infonames(T) "REG_USHORTEST"
set infonames(U) "REG_UPBOTCH"
set infonameorder "RHQBAUEPSMLNIT"      ;# must match bit order, lsb first

# set major test number and description
proc doing {major desc} {
        global prefix description testbypassed

        if {$testbypassed != 0} {
                puts stdout "!!! bypassed $testbypassed tests in\
                                         $prefix, `$description'"
        }

        set prefix reg-$major
        set description "reg $desc"
        set testbypassed 0
}

# build test number (internal)
proc tno {testid} {
        return [join $testid .]
}

# build description, with possible modifiers (internal)
proc desc {testid} {
        global description

        set d $description
        if {[llength $testid] > 1} {
                set d "([lreplace $testid 0 0]) $d"
        }
        return $d
}

# build trailing options and flags argument from a flags string (internal)
proc flags {fl} {
        global xflags

        set args [list]
        set flags ""
        foreach f [split $fl ""] {
                switch -exact -- $f {
                "i" { lappend args "-nocase" }
                "x" { lappend args "-expanded" }
                "n" { lappend args "-line" }
                "p" { lappend args "-linestop" }
                "w" { lappend args "-lineanchor" }
                "-" { }
                default { append flags $f }
                }
        }
        if {[string compare $flags ""] != 0} {
                lappend args -$xflags $flags
        }
        return $args
}

# build info-flags list from a flags string (internal)
proc infoflags {fl} {
        global infonames infonameorder

        set ret [list]
        foreach f [split $infonameorder ""] {
                if {[string first $f $fl] >= 0} {
                        lappend ret $infonames($f)
                }
        }
        return $ret
}

# compilation error expected
proc e {testid flags re err} {
        global prefix ask errorCode

        # Tcl locale stuff doesn't do the ch/xy test fakery yet
        if {[string first "+" $flags] >= 0} {
            # This will register as a skipped test
            test $prefix.[tno $testid] [desc $testid] localeRegexp {} {}
            return
        }

        # if &, test as both ARE and BRE
        set amp [string first "&" $flags]
        if {$amp >= 0} {
                set f [string range $flags 0 [expr $amp - 1]]
                append f [string range $flags [expr $amp + 1] end]
                e [linsert $testid end ARE] ${f} $re $err
                e [linsert $testid end BRE] ${f}b $re $err
                return
        }

        set cmd [concat [list testregexp -$ask] [flags $flags] [list $re]]
        set run "list \[catch \{$cmd\}\] \[lindex \$errorCode 1\]"
        test $prefix.[tno $testid] [desc $testid] \
                {testregexp} $run [list 1 REG_$err]
}

# match failure expected
proc f {testid flags re target args} {
        global prefix description ask

        # Tcl locale stuff doesn't do the ch/xy test fakery yet
        if {[string first "+" $flags] >= 0} {
            # This will register as a skipped test
            test $prefix.[tno $testid] [desc $testid] localeRegexp {} {}
            return
        }

        # if &, test as both ARE and BRE
        set amp [string first "&" $flags]
        if {$amp >= 0} {
                set f [string range $flags 0 [expr $amp - 1]]
                append f [string range $flags [expr $amp + 1] end]
                eval [linsert $args 0 f [linsert $testid end ARE] ${f} $re \
                                                                $target]
                eval [linsert $args 0 f [linsert $testid end BRE] ${f}b $re \
                                                                $target]
                return
        }

        set f [flags $flags]
        set infoflags [infoflags $flags]
        set ccmd [concat [list testregexp -$ask] $f [list $re]]
        set nsub [expr [llength $args] - 1]
        if {$nsub == -1} {
                # didn't tell us number of subexps
                set ccmd "lreplace \[$ccmd\] 0 0"
                set info [list $infoflags]
        } else {
                set info [list $nsub $infoflags]
        }
        lappend testid "compile"
        test $prefix.[tno $testid] [desc $testid] {testregexp} $ccmd $info

        set testid [lreplace $testid end end "execute"]
        set ecmd [concat [list testregexp] $f [list $re $target]]
        test $prefix.[tno $testid] [desc $testid] {testregexp} $ecmd 0
}

# match expected, internal routine that does the work
# parameters like the "real" routines except they don't have "opts",
#  which is a possibly-empty list of switches for the regexp match attempt
# The ! flag is used to indicate expected match failure (for REG_EXPECT,
#  which wants argument testing even in the event of failure).
proc matchexpected {opts testid flags re target args} {
        global prefix description ask regBug

    if {[info exists regBug] && $regBug} {
        # This will register as a skipped test
        test $prefix.[tno $testid] [desc $testid] knownBug {format 0} {1}
        return
    }

        # Tcl locale stuff doesn't do the ch/xy test fakery yet
        if {[string first "+" $flags] >= 0} {
            # This will register as a skipped test
            test $prefix.[tno $testid] [desc $testid] localeRegexp {} {}
            return
        }

        # if &, test as both BRE and ARE
        set amp [string first "&" $flags]
        if {$amp >= 0} {
                set f [string range $flags 0 [expr $amp - 1]]
                append f [string range $flags [expr $amp + 1] end]
                eval [concat [list matchexpected $opts \
                        [linsert $testid end ARE] ${f} $re $target] $args]
                eval [concat [list matchexpected $opts \
                        [linsert $testid end BRE] ${f}b $re $target] $args]
                return
        }

        set f [flags $flags]
        set infoflags [infoflags $flags]
        set ccmd [concat [list testregexp -$ask] $f [list $re]]
        set ecmd [concat [list testregexp] $opts $f [list $re $target]]

        set nsub [expr [llength $args] - 1]
        set names [list]
        set refs ""
        for {set i 0} {$i <= $nsub} {incr i} {
                if {$i == 0} {
                        set name match
                } else {
                        set name sub$i
                }
                lappend names $name
                append refs " \$$name"
                set $name ""
        }
        if {[string first "o" $flags] >= 0} {   ;# REG_NOSUB kludge
                set nsub 0              ;# unsigned value cannot be -1
        }
        if {[string first "t" $flags] >= 0} {   ;# REG_EXPECT
                incr nsub -1            ;# the extra does not count
        }
        set ecmd [concat $ecmd $names]
        set erun "list \[$ecmd\] $refs"
        set retcode [list 1]
        if {[string first "!" $flags] >= 0} {
                set retcode [list 0]
        }
        set result [concat $retcode $args]

        set info [list $nsub $infoflags]
        lappend testid "compile"
        test $prefix.[tno $testid] [desc $testid] {testregexp} $ccmd $info
        set testid [lreplace $testid end end "execute"]
        test $prefix.[tno $testid] [desc $testid] {testregexp} $erun $result
}

# match expected (no missing, empty, or ambiguous submatches)
# m testno flags re target mat submat ...
proc m {args} {
        eval matchexpected [linsert $args 0 [list]]
}

# match expected (full fanciness)
# i testno flags re target mat submat ...
proc i {args} {
        eval matchexpected [linsert $args 0 [list "-indices"]]
}

# partial match expected
# p testno flags re target mat "" ...
# Quirk:  number of ""s must be one more than number of subREs.
proc p {args} {
        set f [lindex $args 1]                  ;# add ! flag
        set args [lreplace $args 1 1 "!$f"]
        eval matchexpected [linsert $args 0 [list "-indices"]]
}

# test is a knownBug
proc knownBug {args} {
    set ::regBug 1
    uplevel #0 $args
    set ::regBug 0
}



# the tests themselves



# support functions and preliminary misc.
# This is sensitive to changes in message wording, but we really have to
# test the code->message expansion at least once.
test reg-0.1 "regexp error reporting" {
        list [catch {regexp (*) ign} msg] $msg
} {1 {couldn't compile regular expression pattern: quantifier operand invalid}}



doing 1 "basic sanity checks"
m  1    &       abc             abc     abc
f  2    &       abc             def
m  3    &       abc             xyabxabce       abc



doing 2 "invalid option combinations"
e  1    qe      a               INVARG
e  2    qa      a               INVARG
e  3    qx      a               INVARG
e  4    qn      a               INVARG
e  5    ba      a               INVARG



doing 3 "basic syntax"
i  1    &NS     ""              a       {0 -1}
m  2    NS      a|              a       a
m  3    -       a|b             a       a
m  4    -       a|b             b       b
m  5    NS      a||b            b       b
m  6    &       ab              ab      ab



doing 4 "parentheses"
m  1    -       (a)e            ae      ae      a
m  2    o       (a)e            ae
m  3    b       {\(a\)b}        ab      ab      a
m  4    -       a((b)c)         abc     abc     bc      b
m  5    -       a(b)(c)         abc     abc     b       c
e  6    -       a(b             EPAREN
e  7    b       {a\(b}          EPAREN
# sigh, we blew it on the specs here... someday this will be fixed in POSIX,
#  but meanwhile, it's fixed in AREs
m  8    eU      a)b             a)b     a)b
e  9    -       a)b             EPAREN
e 10    b       {a\)b}          EPAREN
m 11    P       a(?:b)c         abc     abc
e 12    e       a(?:b)c         BADRPT
i 13    S       a()b            ab      {0 1}   {1 0}
m 14    SP      a(?:)b          ab      ab
i 15    S       a(|b)c          ac      {0 1}   {1 0}
m 16    S       a(b|)c          abc     abc     b



doing 5 "simple one-char matching"
# general case of brackets done later
m  1    &       a.b             axb     axb
f  2    &n      "a.b"           "a\nb"
m  3    &       {a[bc]d}        abd     abd
m  4    &       {a[bc]d}        acd     acd
f  5    &       {a[bc]d}        aed
f  6    &       {a[^bc]d}       abd
m  7    &       {a[^bc]d}       aed     aed
f  8    &p      "a\[^bc]d"      "a\nd"



doing 6 "context-dependent syntax"
# plus odds and ends
e  1    -       *               BADRPT
m  2    b       *               *       *
m  3    b       {\(*\)}         *       *       *
e  4    -       (*)             BADRPT
m  5    b       ^*              *       *
e  6    -       ^*              BADRPT
f  7    &       ^b              ^b
m  8    b       x^              x^      x^
f  9    I       x^              x
m 10    n       "\n^"           "x\nb"  "\n"
f 11    bS      {\(^b\)}        ^b
m 12    -       (^b)            b       b       b
m 13    &       {x$}            x       x
m 14    bS      {\(x$\)}        x       x       x
m 15    -       {(x$)}          x       x       x
m 16    b       {x$y}           "x\$y"  "x\$y"
f 17    I       {x$y}           xy
m 18    n       "x\$\n"         "x\n"   "x\n"
e 19    -       +               BADRPT
e 20    -       ?               BADRPT



doing 7 "simple quantifiers"
m  1    &N      a*              aa      aa
i  2    &N      a*              b       {0 -1}
m  3    -       a+              aa      aa
m  4    -       a?b             ab      ab
m  5    -       a?b             b       b
e  6    -       **              BADRPT
m  7    bN      **              ***     ***
e  8    &       a**             BADRPT
e  9    &       a**b            BADRPT
e 10    &       ***             BADRPT
e 11    -       a++             BADRPT
e 12    -       a?+             BADRPT
e 13    -       a?*             BADRPT
e 14    -       a+*             BADRPT
e 15    -       a*+             BADRPT



doing 8 "braces"
m  1    NQ      "a{0,1}"        ""      ""
m  2    NQ      "a{0,1}"        ac      a
e  3    -       "a{1,0}"        BADBR
e  4    -       "a{1,2,3}"      BADBR
e  5    -       "a{257}"        BADBR
e  6    -       "a{1000}"       BADBR
e  7    -       "a{1"           EBRACE
e  8    -       "a{1n}"         BADBR
m  9    BS      "a{b"           "a\{b"  "a\{b"
m 10    BS      "a{"            "a\{"   "a\{"
m 11    bQ      "a\\{0,1\\}b"   cb      b
e 12    b       "a\\{0,1"       EBRACE
e 13    -       "a{0,1\\"       BADBR
m 14    Q       "a{0}b"         ab      b
m 15    Q       "a{0,0}b"       ab      b
m 16    Q       "a{0,1}b"       ab      ab
m 17    Q       "a{0,2}b"       b       b
m 18    Q       "a{0,2}b"       aab     aab
m 19    Q       "a{0,}b"        aab     aab
m 20    Q       "a{1,1}b"       aab     ab
m 21    Q       "a{1,3}b"       aaaab   aaab
f 22    Q       "a{1,3}b"       b
m 23    Q       "a{1,}b"        aab     aab
f 24    Q       "a{2,3}b"       ab
m 25    Q       "a{2,3}b"       aaaab   aaab
f 26    Q       "a{2,}b"        ab
m 27    Q       "a{2,}b"        aaaab   aaaab



doing 9 "brackets"
m  1    &       {a[bc]}         ac      ac
m  2    &       {a[-]}          a-      a-
m  3    &       {a[[.-.]]}      a-      a-
m  4    &L      {a[[.zero.]]}   a0      a0
m  5    &LM     {a[[.zero.]-9]} a2      a2
m  6    &M      {a[0-[.9.]]}    a2      a2
m  7    &+L     {a[[=x=]]}      ax      ax
m  8    &+L     {a[[=x=]]}      ay      ay
f  9    &+L     {a[[=x=]]}      az
e 10    &       {a[0-[=x=]]}    ERANGE
m 11    &L      {a[[:digit:]]}  a0      a0
e 12    &       {a[[:woopsie:]]}        ECTYPE
f 13    &L      {a[[:digit:]]}  ab
e 14    &       {a[0-[:digit:]]}        ERANGE
m 15    &LP     {[[:<:]]a}      a       a
m 16    &LP     {a[[:>:]]}      a       a
e 17    &       {a[[..]]b}      ECOLLATE
e 18    &       {a[[==]]b}      ECOLLATE
e 19    &       {a[[::]]b}      ECTYPE
e 20    &       {a[[.a}         EBRACK
e 21    &       {a[[=a}         EBRACK
e 22    &       {a[[:a}         EBRACK
e 23    &       {a[}            EBRACK
e 24    &       {a[b}           EBRACK
e 25    &       {a[b-}          EBRACK
e 26    &       {a[b-c}         EBRACK
m 27    &M      {a[b-c]}        ab      ab
m 28    &       {a[b-b]}        ab      ab
m 29    &M      {a[1-2]}        a2      a2
e 30    &       {a[c-b]}        ERANGE
e 31    &       {a[a-b-c]}      ERANGE
m 32    &M      {a[--?]b}       a?b     a?b
m 33    &       {a[---]b}       a-b     a-b
m 34    &       {a[]b]c}        a]c     a]c
m 35    EP      {a[\]]b}        a]b     a]b
f 36    bE      {a[\]]b}        a]b
m 37    bE      {a[\]]b}        "a\\]b" "a\\]b"
m 38    eE      {a[\]]b}        "a\\]b" "a\\]b"
m 39    EP      {a[\\]b}        "a\\b"  "a\\b"
m 40    eE      {a[\\]b}        "a\\b"  "a\\b"
m 41    bE      {a[\\]b}        "a\\b"  "a\\b"
e 42    -       {a[\Z]b}        EESCAPE
m 43    &       {a[[b]c}        "a\[c"  "a\[c"
m 44    EMP*    {a[\u00fe-\u0507][\u00ff-\u0300]b} \
                        "a\u0102\u02ffb"        "a\u0102\u02ffb"



doing 10 "anchors and newlines"
m  1    &       ^a              a       a
f  2    &^      ^a              a
i  3    &N      ^               a       {0 -1}
i  4    &       {a$}            aba     {2 2}
f  5    {&$}    {a$}            a
i  6    &N      {$}             ab      {2 1}
m  7    &n      ^a              a       a
m  8    &n      "^a"            "b\na"  "a"
i  9    &w      "^a"            "a\na"  {0 0}
i 10    &n^     "^a"            "a\na"  {2 2}
m 11    &n      {a$}            a       a
m 12    &n      "a\$"           "a\nb"  "a"
i 13    &n      "a\$"           "a\na"  {0 0}
i 14    N       ^^              a       {0 -1}
m 15    b       ^^              ^       ^
i 16    N       {$$}            a       {1 0}
m 17    b       {$$}            "\$"    "\$"
m 18    &N      {^$}            ""      ""
f 19    &N      {^$}            a
i 20    &nN     "^\$"           "a\n\nb"        {2 1}
m 21    N       {$^}            ""      ""
m 22    b       {$^}            "\$^"   "\$^"
m 23    P       {\Aa}           a       a
m 24    ^P      {\Aa}           a       a
f 25    ^nP     {\Aa}           "b\na"
m 26    P       {a\Z}           a       a
m 27    {$P}    {a\Z}           a       a
f 28    {$nP}   {a\Z}           "a\nb"
e 29    -       ^*              BADRPT
e 30    -       {$*}            BADRPT
e 31    -       {\A*}           BADRPT
e 32    -       {\Z*}           BADRPT



doing 11 "boundary constraints"
m  1    &LP     {[[:<:]]a}      a       a
m  2    &LP     {[[:<:]]a}      -a      a
f  3    &LP     {[[:<:]]a}      ba
m  4    &LP     {a[[:>:]]}      a       a
m  5    &LP     {a[[:>:]]}      a-      a
f  6    &LP     {a[[:>:]]}      ab
m  7    bLP     {\<a}           a       a
f  8    bLP     {\<a}           ba
m  9    bLP     {a\>}           a       a
f 10    bLP     {a\>}           ab
m 11    LP      {\ya}           a       a
f 12    LP      {\ya}           ba
m 13    LP      {a\y}           a       a
f 14    LP      {a\y}           ab
m 15    LP      {a\Y}           ab      a
f 16    LP      {a\Y}           a-
f 17    LP      {a\Y}           a
f 18    LP      {-\Y}           -a
m 19    LP      {-\Y}           -%      -
f 20    LP      {\Y-}           a-
e 21    -       {[[:<:]]*}      BADRPT
e 22    -       {[[:>:]]*}      BADRPT
e 23    b       {\<*}           BADRPT
e 24    b       {\>*}           BADRPT
e 25    -       {\y*}           BADRPT
e 26    -       {\Y*}           BADRPT
m 27    LP      {\ma}           a       a
f 28    LP      {\ma}           ba
m 29    LP      {a\M}           a       a
f 30    LP      {a\M}           ab
f 31    ILP     {\Ma}           a
f 32    ILP     {a\m}           a



doing 12 "character classes"
m  1    LP      {a\db}          a0b     a0b
f  2    LP      {a\db}          axb
f  3    LP      {a\Db}          a0b
m  4    LP      {a\Db}          axb     axb
m  5    LP      "a\\sb"         "a b"   "a b"
m  6    LP      "a\\sb"         "a\tb"  "a\tb"
m  7    LP      "a\\sb"         "a\nb"  "a\nb"
f  8    LP      {a\sb}          axb
m  9    LP      {a\Sb}          axb     axb
f 10    LP      "a\\Sb"         "a b"
m 11    LP      {a\wb}          axb     axb
f 12    LP      {a\wb}          a-b
f 13    LP      {a\Wb}          axb
m 14    LP      {a\Wb}          a-b     a-b
m 15    LP      {\y\w+z\y}      adze-guz        guz
m 16    LPE     {a[\d]b}        a1b     a1b
m 17    LPE     "a\[\\s]b"      "a b"   "a b"
m 18    LPE     {a[\w]b}        axb     axb



doing 13 "escapes"
e  1    &       "a\\"           EESCAPE
m  2    -       {a\<b}          a<b     a<b
m  3    e       {a\<b}          a<b     a<b
m  4    bAS     {a\wb}          awb     awb
m  5    eAS     {a\wb}          awb     awb
m  6    PL      "a\\ab"         "a\007b"        "a\007b"
m  7    P       "a\\bb"         "a\bb"  "a\bb"
m  8    P       {a\Bb}          "a\\b"  "a\\b"
m  9    MP      "a\\chb"        "a\bb"  "a\bb"
m 10    MP      "a\\cHb"        "a\bb"  "a\bb"
m 11    LMP     "a\\e"          "a\033" "a\033"
m 12    P       "a\\fb"         "a\fb"  "a\fb"
m 13    P       "a\\nb"         "a\nb"  "a\nb"
m 14    P       "a\\rb"         "a\rb"  "a\rb"
m 15    P       "a\\tb"         "a\tb"  "a\tb"
m 16    P       "a\\u0008x"     "a\bx"  "a\bx"
e 17    -       {a\u008x}       EESCAPE
m 18    P       "a\\u00088x"    "a\b8x" "a\b8x"
m 19    P       "a\\U00000008x" "a\bx"  "a\bx"
e 20    -       {a\U0000008x}   EESCAPE
m 21    P       "a\\vb"         "a\vb"  "a\vb"
m 22    MP      "a\\x08x"       "a\bx"  "a\bx"
e 23    -       {a\xq}          EESCAPE
m 24    MP      "a\\x0008x"     "a\bx"  "a\bx"
e 25    -       {a\z}           EESCAPE
m 26    MP      "a\\010b"       "a\bb"  "a\bb"



doing 14 "back references"
# ugh
m  1    RP      {a(b*)c\1}      abbcbb  abbcbb  bb
m  2    RP      {a(b*)c\1}      ac      ac      ""
f  3    RP      {a(b*)c\1}      abbcb
m  4    RP      {a(b*)\1}       abbcbb  abb     b
m  5    RP      {a(b|bb)\1}     abbcbb  abb     b
m  6    RP      {a([bc])\1}     abb     abb     b
f  7    RP      {a([bc])\1}     abc
m  8    RP      {a([bc])\1}     abcabb  abb     b
f  9    RP      {a([bc])*\1}    abc
f 10    RP      {a([bc])\1}     abB
m 11    iRP     {a([bc])\1}     abB     abB     b
m 12    RP      {a([bc])\1+}    abbb    abbb    b
m 13    QRP     "a(\[bc])\\1{3,4}"      abbbb   abbbb   b
f 14    QRP     "a(\[bc])\\1{3,4}"      abbb
m 15    RP      {a([bc])\1*}    abbb    abbb    b
m 16    RP      {a([bc])\1*}    ab      ab      b
m 17    RP      {a([bc])(\1*)}  ab      ab      b       ""
e 18    -       {a((b)\1)}      ESUBREG
e 19    -       {a(b)c\2}       ESUBREG
m 20    bR      {a\(b*\)c\1}    abbcbb  abbcbb  bb



doing 15 "octal escapes vs back references"
# initial zero is always octal
m  1    MP      "a\\010b"       "a\bb"  "a\bb"
m  2    MP      "a\\0070b"      "a\0070b"       "a\0070b"
m  3    MP      "a\\07b"        "a\007b"        "a\007b"
m  4    MP      "a(b)(b)(b)(b)(b)(b)(b)(b)(b)(b)\\07c"  "abbbbbbbbbb\007c" \
        "abbbbbbbbbb\007c"      "b"     "b"     "b"     "b"     "b"     "b" \
        "b"     "b"     "b"     "b"
# a single digit is always a backref
e  5    -       {a\7b}          ESUBREG
# otherwise it's a backref only if within range (barf!)
m  6    MP      "a\\10b"        "a\bb"  "a\bb"
m  7    MP      {a\101b}        aAb     aAb
m  8    RP      {a(b)(b)(b)(b)(b)(b)(b)(b)(b)(b)\10c}   abbbbbbbbbbbc \
        abbbbbbbbbbbc   b       b       b       b       b       b       b \
        b       b       b
# but we're fussy about border cases -- guys who want octal should use the zero
e  9    -       {a((((((((((b\10))))))))))c}    ESUBREG
# BREs don't have octal, EREs don't have backrefs
m 10    MP      "a\\12b"        "a\nb"  "a\nb"
e 11    b       {a\12b}         ESUBREG
m 12    eAS     {a\12b}         a12b    a12b



doing 16 "expanded syntax"
m  1    xP      "a b c"         "abc"   "abc"
m  2    xP      "a b #oops\nc\td"       "abcd"  "abcd"
m  3    x       "a\\ b\\\tc"    "a b\tc"        "a b\tc"
m  4    xP      "a b\\#c"       "ab#c"  "ab#c"
m  5    xP      "a b\[c d]e"    "ab e"  "ab e"
m  6    xP      "a b\[c#d]e"    "ab#e"  "ab#e"
m  7    xP      "a b\[c#d]e"    "abde"  "abde"
m  8    xSPB    "ab{ d"         "ab\{d" "ab\{d"
m  9    xPQ     "ab{ 1 , 2 }c"  "abc"   "abc"



doing 17 "misc syntax"
m  1    P       a(?#comment)b   ab      ab



doing 18 "unmatchable REs"
f  1    I       a^b             ab



doing 19 "case independence"
m  1    &i      ab              Ab      Ab
m  2    &i      {a[bc]}         aC      aC
f  3    &i      {a[^bc]}        aB
m  4    &iM     {a[b-d]}        aC      aC
f  5    &iM     {a[^b-d]}       aC



doing 20 "directors and embedded options"
e  1    &       ***?            BADPAT
m  2    q       ***?            ***?    ***?
m  3    &P      ***=a*b         a*b     a*b
m  4    q       ***=a*b         ***=a*b ***=a*b
m  5    bLP     {***:\w+}       ab      ab
m  6    eLP     {***:\w+}       ab      ab
e  7    &       ***:***=a*b     BADRPT
m  8    &P      ***:(?b)a+b     a+b     a+b
m  9    P       (?b)a+b         a+b     a+b
e 10    e       {(?b)\w+}       BADRPT
m 11    bAS     {(?b)\w+}       (?b)w+  (?b)w+
m 12    iP      (?c)a           a       a
f 13    iP      (?c)a           A
m 14    APS     {(?e)\W+}       WW      WW
m 15    P       (?i)a+          Aa      Aa
f 16    P       "(?m)a.b"       "a\nb"
m 17    P       "(?m)^b"        "a\nb"  "b"
f 18    P       "(?n)a.b"       "a\nb"
m 19    P       "(?n)^b"        "a\nb"  "b"
f 20    P       "(?p)a.b"       "a\nb"
f 21    P       "(?p)^b"        "a\nb"
m 22    P       (?q)a+b         a+b     a+b
m 23    nP      "(?s)a.b"       "a\nb"  "a\nb"
m 24    xP      "(?t)a b"       "a b"   "a b"
m 25    P       "(?w)a.b"       "a\nb"  "a\nb"
m 26    P       "(?w)^b"        "a\nb"  "b"
m 27    P       "(?x)a b"       "ab"    "ab"
e 28    -       (?z)ab          BADOPT
m 29    P       (?ici)a+        Aa      Aa
e 30    P       (?i)(?q)a+      BADRPT
m 31    P       (?q)(?i)a+      (?i)a+  (?i)a+
m 32    P       (?qe)a+         a       a
m 33    xP      "(?q)a b"       "a b"   "a b"
m 34    P       "(?qx)a b"      "a b"   "a b"
m 35    P       (?qi)ab         Ab      Ab



doing 21 "capturing"
m  1    -       a(b)c           abc     abc     b
m  2    P       a(?:b)c         xabc    abc
m  3    -       a((b))c         xabcy   abc     b       b
m  4    P       a(?:(b))c       abcy    abc     b
m  5    P       a((?:b))c       abc     abc     b
m  6    P       a(?:(?:b))c     abc     abc
i  7    Q       "a(b){0}c"      ac      {0 1}   {-1 -1}
m  8    -       a(b)c(d)e       abcde   abcde   b       d
m  9    -       (b)c(d)e        bcde    bcde    b       d
m 10    -       a(b)(d)e        abde    abde    b       d
m 11    -       a(b)c(d)        abcd    abcd    b       d
m 12    -       (ab)(cd)        xabcdy  abcd    ab      cd
m 13    -       a(b)?c          xabcy   abc     b
i 14    -       a(b)?c          xacy    {1 2}   {-1 -1}
m 15    -       a(b)?c(d)?e     xabcdey abcde   b       d
i 16    -       a(b)?c(d)?e     xacdey  {1 4}   {-1 -1} {3 3}
i 17    -       a(b)?c(d)?e     xabcey  {1 4}   {2 2}   {-1 -1}
i 18    -       a(b)?c(d)?e     xacey   {1 3}   {-1 -1} {-1 -1}
m 19    -       a(b)*c          xabcy   abc     b
i 20    -       a(b)*c          xabbbcy {1 5}   {4 4}
i 21    -       a(b)*c          xacy    {1 2}   {-1 -1}
m 22    -       a(b*)c          xabbbcy abbbc   bbb
m 23    -       a(b*)c          xacy    ac      ""
f 24    -       a(b)+c          xacy
m 25    -       a(b)+c          xabcy   abc     b
i 26    -       a(b)+c          xabbbcy {1 5}   {4 4}
m 27    -       a(b+)c          xabbbcy abbbc   bbb
i 28    Q       "a(b){2,3}c"    xabbbcy {1 5}   {4 4}
i 29    Q       "a(b){2,3}c"    xabbcy  {1 4}   {3 3}
f 30    Q       "a(b){2,3}c"    xabcy
m 31    LP      "\\y(\\w+)\\y"  "-- abc-"       "abc"   "abc"
m 32    -       a((b|c)d+)+     abacdbd acdbd   bd      b
m 33    N       (.*).*          abc     abc     abc
m 34    N       (a*)*           bc      ""      ""



doing 22 "multicharacter collating elements"
# again ugh
m  1    &+L     {a[c]e}         ace     ace
f  2    &+IL    {a[c]h}         ach
m  3    &+L     {a[[.ch.]]}     ach     ach
f  4    &+L     {a[[.ch.]]}     ace
m  5    &+L     {a[c[.ch.]]}    ac      ac
m  6    &+L     {a[c[.ch.]]}    ace     ac
m  7    &+L     {a[c[.ch.]]}    ache    ach
f  8    &+L     {a[^c]e}        ace
m  9    &+L     {a[^c]e}        abe     abe
m 10    &+L     {a[^c]e}        ache    ache
f 11    &+L     {a[^[.ch.]]}    ach
m 12    &+L     {a[^[.ch.]]}    ace     ac
m 13    &+L     {a[^[.ch.]]}    ac      ac
m 14    &+L     {a[^[.ch.]]}    abe     ab
f 15    &+L     {a[^c[.ch.]]}   ach
f 16    &+L     {a[^c[.ch.]]}   ace
f 17    &+L     {a[^c[.ch.]]}   ac
m 18    &+L     {a[^c[.ch.]]}   abe     ab
m 19    &+L     {a[^b]}         ac      ac
m 20    &+L     {a[^b]}         ace     ac
m 21    &+L     {a[^b]}         ach     ach
f 22    &+L     {a[^b]}         abe



doing 23 "lookahead constraints"
m  1    HP      a(?=b)b*        ab      ab
f  2    HP      a(?=b)b*        a
m  3    HP      a(?=b)b*(?=c)c* abc     abc
f  4    HP      a(?=b)b*(?=c)c* ab
f  5    HP      a(?!b)b*        ab
m  6    HP      a(?!b)b*        a       a
m  7    HP      (?=b)b          b       b
f  8    HP      (?=b)b          a



doing 24 "non-greedy quantifiers"
m  1    PT      ab+?            abb     ab
m  2    PT      ab+?c           abbc    abbc
m  3    PT      ab*?            abb     a
m  4    PT      ab*?c           abbc    abbc
m  5    PT      ab??            ab      a
m  6    PT      ab??c           abc     abc
m  7    PQT     "ab{2,4}?"      abbbb   abb
m  8    PQT     "ab{2,4}?c"     abbbbc  abbbbc
m  9    -       3z*             123zzzz456      3zzzz
m 10    PT      3z*?            123zzzz456      3
m 11    -       z*4             123zzzz456      zzzz4
m 12    PT      z*?4            123zzzz456      zzzz4



doing 25 "mixed quantifiers"
# this is very incomplete as yet
# should include |
m  1    PNT     {^(.*?)(a*)$}   xyza    xyza    xyz     a
m  2    PNT     {^(.*?)(a*)$}   xyzaa   xyzaa   xyz     aa
m  3    PNT     {^(.*?)(a*)$}   xyz     xyz     xyz     ""



doing 26 "tricky cases"
# attempts to trick the matcher into accepting a short match
m  1    -       (week|wee)(night|knights)       weeknights      weeknights \
        wee     knights
m  2    RP      {a(bc*).*\1}    abccbccb        abccbccb        b
m  3    -       {a(b.[bc]*)+}   abcbd   abcbd   bd



doing 27 "implementation misc."
# duplicate arcs are suppressed
m  1    P       a(?:b|b)c       abc     abc
# make color/subcolor relationship go back and forth
m  2    &       {[ab][ab][ab]}  aba     aba
m  3    &       {[ab][ab][ab][ab][ab][ab][ab]}  abababa abababa



doing 28 "boundary busters etc."
# color-descriptor allocation changes at 10
m  1    &       abcdefghijkl    abcdefghijkl    abcdefghijkl
# so does arc allocation
m  2    P       a(?:b|c|d|e|f|g|h|i|j|k|l|m)n   agn     agn
# subexpression tracking also at 10
m  3    -       a(((((((((((((b)))))))))))))c   abc     abc     b       b       b       b       b       b       b       b       b       b       b       b       b
# state-set handling changes slightly at unsigned size (might be 64...)
# (also stresses arc allocation)
m  4    Q       "ab{1,100}c"    abbc    abbc
m  5    Q       "ab{1,100}c"    abbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbc \
        abbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbc
m  6    Q       "ab{1,100}c" \
        abbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbc \
        abbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbc
# force small cache and bust it, several ways
m  7    LP      {\w+abcdefgh}   xyzabcdefgh     xyzabcdefgh
m  8    %LP     {\w+abcdefgh}   xyzabcdefgh     xyzabcdefgh
m  9    %LP     {\w+abcdefghijklmnopqrst}       xyzabcdefghijklmnopqrst \
        xyzabcdefghijklmnopqrst
i 10    %LP     {\w+(abcdefgh)?}        xyz     {0 2}   {-1 -1}
i 11    %LP     {\w+(abcdefgh)?}        xyzabcdefg      {0 9}   {-1 -1}
i 12    %LP     {\w+(abcdefghijklmnopqrst)?}    xyzabcdefghijklmnopqrs \
        {0 21}  {-1 -1}



doing 29 "incomplete matches"
p  1    t       def             abc     {3 2}   ""
p  2    t       bcd             abc     {1 2}   ""
p  3    t       abc             abab    {0 3}   ""
p  4    t       abc             abdab   {3 4}   ""
i  5    t       abc             abc     {0 2}   {0 2}
i  6    t       abc             xyabc   {2 4}   {2 4}
p  7    t       abc+            xyab    {2 3}   ""
i  8    t       abc+            xyabc   {2 4}   {2 4}
knownBug i  9   t       abc+            xyabcd  {2 4}   {6 5}
i  10   t       abc+            xyabcdd {2 4}   {7 6}
p  11   tPT     abc+?           xyab    {2 3}   ""
# the retain numbers in these two may look wrong, but they aren't
i  12   tPT     abc+?           xyabc   {2 4}   {5 4}
i  13   tPT     abc+?           xyabcc  {2 4}   {6 5}
i  14   tPT     abc+?           xyabcd  {2 4}   {6 5}
i  15   tPT     abc+?           xyabcdd {2 4}   {7 6}
i  16   t       abcd|bc         xyabc   {3 4}   {2 4}
p  17   tn      .*k             "xx\nyyy"       {3 5}   ""


doing 30 "misc. oddities and old bugs"
e  1    &       ***             BADRPT
m  2    N       a?b*            abb     abb
m  3    N       a?b*            bb      bb
m  4    &       a*b             aab     aab
m  5    &       ^a*b            aaaab   aaaab
m  6    &M      {[0-6][1-2][0-3][0-6][1-6][0-6]}        010010  010010
# temporary REG_BOSONLY kludge
m  7    s       abc             abcd    abc
f  8    s       abc             xabcd
# back to normal stuff
m  9    HLP     {(?n)^(?![t#])\S+}      "tk\n\n#\n#\nit0"       it0


# flush any leftover complaints
doing 0 "flush"

# Tests resulting from bugs reported by users
test reg-31.1 {[[:xdigit:]] behaves correctly when followed by [[:space:]]} {
    set str {2:::DebugWin32}
    set re {([[:xdigit:]])([[:space:]]*)}
    list [regexp $re $str match xdigit spaces] $match $xdigit $spaces
    # Code used to produce {1 2:::DebugWin32 2 :::DebugWin32} !!!
} {1 2 2 {}}

test reg-32.1 {canmatch functionality -- at end} {
    set pat {blah}
    set line "asd asd"
    # can match at the final d, if '%' follows
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 7}

test reg-32.2 {canmatch functionality -- at end} {
    set pat {s%$}
    set line "asd asd"
    # can only match after the end of the string
    set res [testregexp -xflags -- c $pat $line resvar] 
    lappend res $resvar
} {0 7}

test reg-32.3 {canmatch functionality -- not last char} {
    set pat {[^d]%$}
    set line "asd asd"
    # can only match after the end of the string
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 7}

test reg-32.3.1 {canmatch functionality -- no match} {
    set pat {\Zx}
    set line "asd asd"
    # can match the last char, if followed by x
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 -1}

test reg-32.4 {canmatch functionality -- last char} {knownBug} {
    set pat {.x}
    set line "asd asd"
    # can match the last char, if followed by x
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 6}

test reg-32.4.1 {canmatch functionality -- last char} {knownBug} {
    set pat {.x$}
    set line "asd asd"
    # can match the last char, if followed by x
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 6}

test reg-32.5 {canmatch functionality -- last char} {knownBug} {
    set pat {.[^d]x$}
    set line "asd asd"
    # can match the last char, if followed by not-d and x.
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 6}

test reg-32.6 {canmatch functionality -- last char} {knownBug} {
    set pat {[^a]%[^\r\n]*$}
    set line "asd asd"
    # can match at the final d, if '%' follows
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 6}

test reg-32.7 {canmatch functionality -- last char} {knownBug} {
    set pat {[^a]%$}
    set line "asd asd"
    # can match at the final d, if '%' follows
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 6}

test reg-32.8 {canmatch functionality -- last char} {knownBug} {
    set pat {[^x]%$}
    set line "asd asd"
    # can match at the final d, if '%' follows
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 6}

test reg-32.9 {canmatch functionality -- more complex case} {knownBug} {
    set pat {((\B\B|\Bh+line)[ \t]*|[^\B]%[^\r\n]*)$}
    set line "asd asd"
    # can match at the final d, if '%' follows
    set res [testregexp -xflags -- c $pat $line resvar]
    lappend res $resvar
} {0 6}

# Tests reg-33.*: Checks for bug fixes

test reg-33.1 {Bug 230589} {
    regexp {[ ]*(^|[^%])%V} "*%V2" m s
} 1

test reg-33.2 {Bug 504785} {
    regexp -inline {([^_.]*)([^.]*)\.(..)(.).*} bbcos_001_c01.q1la
} {bbcos_001_c01.q1la bbcos _001_c01 q1 l}

test reg-33.3 {Bug 505048} {
    regexp {\A\s*[^<]*\s*<([^>]+)>} a<a>
} 1

test reg-33.4 {Bug 505048} {
    regexp {\A\s*([^b]*)b} ab
} 1

test reg-33.5 {Bug 505048} {
    regexp {\A\s*[^b]*(b)} ab
} 1

test reg-33.6 {Bug 505048} {
    regexp {\A(\s*)[^b]*(b)} ab
} 1

test reg-33.7 {Bug 505048} {
    regexp {\A\s*[^b]*b} ab
} 1

test reg-33.8 {Bug 505048} {
    regexp -inline {\A\s*[^b]*b} ab
} ab

test reg-33.9 {Bug 505048} {
    regexp -indices -inline {\A\s*[^b]*b} ab
} {{0 1}}

test reg-33.10 {Bug 840258} {
    regsub {(^|\n)+\.*b} \n.b {} tmp
} 1

test reg-33.11 {Bug 840258} {
    regsub {(^|[\n\r]+)\.*\?<.*?(\n|\r)+} \
            "TQ\r\n.?<5000267>Test already stopped\r\n" {} tmp
} 1

# cleanup
::tcltest::cleanupTests
return