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## Metacharacter tests
. a y dot (.)
. \n y dot (.)
. '' n dot (.)
a\s+f abcdef n whitespace (\s)
ab\s+cdef ab cdef y whitespace (\s)
a\S+f abcdef y not whitespace (\S)
a\S+f ab cdef n not whitespace (\S)
^ abc abcdef y start and end of string (^)
^ abc abc\ndef y start and end of string (^)
^ abc def\nabc n start and end of string (^)
def \n ^ abc def\nabc n start and end of string (^)
def $ abcdef y start and end of string ($)
def $ abc\ndef y start and end of string ($)
def $ def\nabc n start and end of string ($)
def $ \n abc def\nabc n start and end of string (^)
abc \n $ abc\n y end of string ($)
abc $ abc\n n end of string ($)
<<def abc-def y left word boundary, beginning of word
<<bc abc-def n left word boundary, mid-word
c<< abc-def n left word boundary, end of word
<<abc abc-def y left word boundary, BOS
def<< abc-def n left word boundary, EOS
<< ------- n left word boundary, no word chars
>>def abc-def n right word boundary, beginning of word
>>bc abc-def n right word boundary, mid-word
c>> abc-def y right word boundary, end of word
>>abc abc-def n right word boundary, BOS
def>> abc-def y right word boundary, EOS
>> ------- n right word boundary, no word chars
abc <( def abcdefghi <def @ 3> from <( marker
abc <( def abcde n from <( marker in failed match
abc )> def abcdefghi <abc @ 0> to )> marker
abc <( \d+ )> def abc123def <123 @ 3> from <( and to >)
abc <( \d+ def abc456def <456def @ 3> from <( only
abc \d+ )> def abc789def <abc789 @ 0> to )> only
abc <( def || ..... abc123def <abc12 @ 0> backtracked from <(
abc <( \d+ <( def abc123def <def @ 6> multiple <('s
c \n d abc\ndef y logical newline (\n)
c \n d abc\rdef y logical newline matches \r
c \n+ d abc\n\ndef y logical newline quantified
a\n+f abcdef n logical newline (\n)
c \n d abc\n\rdef n logical newline doesn't match \n\r
c \n d abc\r\ndef y logical newline matches \r\n
b \n c abc\ndef n logical newline (\n)
\N a y not logical newline (\N)
a \N c abc y not logical newline (\N)
\N '' n not logical newline (\N)
c \N d abc\ndef n not logical newline (\N)
c \N d abc\rdef n not logical newline (\N)
c \N+ d abc\n\ndef n not logical newline (\N)
a\N+f abcdef y not logical newline (\N)
c \N d abc\n\rdef n not logical newline (\N)
c \N d abc\r\ndef n not logical newline (\N)
b \N \n abc\ndef y not logical newline (\N)
\Aabc Aabc [Unsupported] retired metachars (\A)
\Aabc abc\ndef [Unsupported] retired metachars (\A)
abc\Z abcZ [Unsupported] retired metachars (\Z)
abc\Z abc\ndef [Unsupported] retired metachars (\Z)
abc\z abcz [Unsupported] retired metachars (\z)
def\z abc\ndef [Unsupported] retired metachars (\z)
abc # def abc#def y comments (#)
abc # xyz abc#def y comments (#)
abc # def \n \$ abc#def y comments (#)
abc '#' def abc#def y comments (#)
abc '#' xyz abc#def n comments (#)
^ abc '#' def $ abc#def y comments (#)
^^ abc \n ^^ def abc\ndef y line beginnings and endings (^^)
^^ abc \n ^^ def \n ^^ abc\ndef\n n line beginnings and endings (^^)
^^ \n \n y line beginnings and endings (^^)
\n ^^ \n n line beginnings and endings (^^)
abc $$ \n def $$ abc\ndef y line beginnings and endings ($$)
abc $$ \n def $$ \n $$ abc\ndef\n n line beginnings and endings ($$)
$$ \n \n y line beginnings and endings ($$)
\n $$ \n n line beginnings and endings ($$)
<[a..d]> | <[b..e]> c y alternation (|)
<[a..d]> | <[d..e]> c y alternation (|)
<[a..b]> | <[b..e]> c y alternation (|)
<[a..b]> | <[d..e]> c n alternation (|)
<[a..d]>+ | <[b..e]>+ bcd y alternation (|)
^ [ <[a..d]>+ | <[b..e]>+ ] $ bcd y alternation (|)
^ [ <[a..c]>+ | <[b..e]>+ ] $ bcd y alternation (|)
^ [ <[a..d]>+ | <[c..e]>+ ] $ bcd y alternation (|)
b| bcd [Null regex] alternation (|) - null right arg illegal
|b bcd y alternation (|) - null left arg ignored
| bcd [Null regex] alternation (|) - null both args illegal
\| | y alternation (|) - literal must be escaped
| | [Null regex] alternation (|) - literal must be escaped
<[a..d]> && <[b..e]> c y conjunction (&&)
<[a..d]> && <[d..e]> c n conjunction (&&)
<[a..b]> && <[b..e]> c n conjunction (&&)
<[a..b]> && <[d..e]> c n conjunction (&&)
<[a..d]>+ && <[b..e]>+ bcd y conjunction (&&)
^ [ <[a..d]>+ && <[b..e]>+ ] $ bcd y conjunction (&&)
<[a..c]>+ && <[b..e]>+ bcd y conjunction (&&)
<[a..d]>+ && <[c..e]>+ bcd y conjunction (&&)
b& bcd [Null regex] conjunction (&) - null right arg illegal
& bcd [Null regex] conjunction (&) - null both args illegal
\& & y conjunction (&) - literal must be escaped
& & [Null regex] conjunction (&) - literal must be escaped
a&|b a&|b [Null regex] alternation and conjunction (&|) - parse error
& & [Null regex] conjunction (&) - literal must be escaped
a|&b a|&b y alternation and conjunction (|&) - leading & inside | is okay
|d|b abc y leading alternation ignored
|d|b abc y leading alternation ignored
|d |b abc y leading alternation ignored
| d | b abc y leading alternation ignored
\pabc pabc [Unrecognized] retired metachars (\p)
\p{InConsonant} a [Unrecognized] retired metachars (\p)
\Pabc Pabc [Unrecognized] retired metachars (\P)
\P{InConsonant} a [Unrecognized] retired metachars (\P)
\Labc\E LabcE [Unrecognized] retired metachars (\L...\E)
\LABC\E abc [Unrecognized] retired metachars (\L...\E)
\Uabc\E UabcE [Unrecognized] retired metachars (\U...\E)
\Uabc\E ABC [Unrecognized] retired metachars (\U...\E)
\Qabc\E QabcE [Unsupported] retired metachars (\Q...\E)
\Qabc d?\E abc d [Unsupported] retired metachars (\Q...\E)
\Gabc Gabc [Unrecognized] retired metachars (\G)
\1abc 1abc [Unrecognized] retired metachars (\1)
^ \s+ $ \x0009\x0020\x00a0\x000a\x000b\x000c\x000d\x0085 y 0-255 whitespace (\s)
^ \h+ $ \x0009\x0020\x00a0 y 0-255 horizontal whitespace (\h)
^ \V+ $ \x0009\x0020\x00a0 y 0-255 horizontal whitespace (\V)
^ \v+ $ \x000a\x000b\x000c\x000d\x0085 y 0-255 vertical whitespace (\v)
^ \h+ $ \x000a\x000b\x000c\x000d\x0085 n 0-255 horizontal whitespace (\h)
^ \v+ $ \x0009\x0020\x00a0 n 0-255 vertical whitespace (\v)
^ \s+ $ \x1680\x2000\x2001\x2002\x2003\x2004\x2005\x2006\x2007\x2008\x2008\x2009\x200a\x202f\x205f\x3000 y unicode whitespace (\s)
^ \h+ $ \x1680\x180e\x2000\x2001\x2002\x2003\x2004\x2005\x2006\x2007\x2008\x2008\x2009\x200a\x202f\x205f\x3000 y unicode whitespace (\h)
^ \V+ $ \x1680\x180e\x2000\x2001\x2002\x2003\x2004\x2005\x2006\x2007\x2008\x2008\x2009\x200a\x202f\x205f\x3000 y unicode whitespace (\V)
^ \v+ $ \x1680\x180e\x2000\x2001\x2002\x2003\x2004\x2005\x2006\x2007\x2008\x2008\x2009\x200a\x202f\x205f\x3000 n unicode whitespace (\v)
c \t d abc\tdef y horizontal tab (\t)
c \t+ d abc\t\tdef y horizontal tab (\t)
a \t+ f abcdef n horizontal tab (\t)
b \t c abc\tdef n horizontal tab (\t)
\T a y not horizontal tab (\T)
a \T c abc y not horizontal tab (\T)
\T '' n not horizontal tab (\T)
c \T d abc\tdef n not horizontal tab (\T)
c \T+ d abc\t\tdef n not horizontal tab (\T)
a \T+ f abcdef y not horizontal tab (\T)
c \r d abc\rdef y return (\r)
c \r+ d abc\r\rdef y return (\r)
a \r+ f abcdef n return (\r)
b \r c abc\rdef n return (\r)
\R a y not return (\R)
a \R c abc y not return (\R)
\R '' n not return (\R)
c \R d abc\rdef n not return (\R)
c \R+ d abc\r\rdef n not return (\R)
a \R+ f abcdef y not return (\R)
c \f d abc\fdef y formfeed (\f)
c \f+ d abc\f\fdef y formfeed (\f)
a \f+ f abcdef n formfeed (\f)
b \f c abc\fdef n formfeed (\f)
\F a y not formfeed (\F)
a \F c abc y not formfeed (\F)
\F '' n not formfeed (\F)
c \F d abc\fdef n not formfeed (\F)
c \F+ d abc\f\fdef n not formfeed (\F)
a \F+ f abcdef y not formfeed (\F)
c \e d abc\edef y escape (\e)
c \e+ d abc\e\edef y escape (\e)
a \e+ f abcdef n escape (\e)
b \e c abc\edef n escape (\e)
\E a y not escape (\E)
a \E c abc y not escape (\E)
\E '' n not escape (\E)
c \E d abc\edef n not escape (\E)
c \E+ d abc\e\edef n not escape (\E)
a \E+ f abcdef y not escape (\E)
c \x0021 d abc!def y hex (\x)
c \x0021+ d abc!!def y hex (\x)
a \x0021+ f abcdef n hex (\x)
b \x0021 c abc!def n hex (\x)
c \x[0021] d abc!def y hex (\x[])
c \x[0021]+ d abc!!def y hex (\x[])
c \x[21,21] d abc!!def y hex (\x[])
c \x[21, 21] d abc!!def y hex (\x[])
c \x[ 21 , 21 ] d abc!!def y hex (\x[])
a \x[0021]+ f abcdef n hex (\x[])
b \x[0021] c abc!def n hex (\x[])
\X0021 a y not hex (\X)
a \X0021 c abc y not hex (\X)
\X0021 '' n not hex (\X)
c \X0021 d abc!def n not hex (\X)
c \X0021+ d abc!!def n not hex (\X)
a \X0021+ f abcdef y not hex (\X)
\X[0021] a y not hex (\X[])
a \X[0021] c abc y not hex (\X[])
\X[0021] '' n not hex (\X[])
c \X[0021] d abc!def n not hex (\X[])
c \X[0021]+ d abc!!def n not hex (\X[])
a \X[0021]+ f abcdef y not hex (\X[])
c \c33 d abc!def y hex (\c)
c \c33+ d abc!!def y hex (\c)
a \c33+ f abcdef n hex (\c)
b \c33 c abc!def n hex (\c)
c \c[33] d abc!def y hex (\c[])
c \c[33]+ d abc!!def y hex (\c[])
c \c[33,33] d abc!!def y hex (\c[])
c \c[ 33, 33] d abc!!def y hex (\c[])
c \c[ 33 , 33 ] d abc!!def y hex (\c[])
a \c[33]+ f abcdef n hex (\c[])
b \c[33] c abc!def n hex (\c[])
\C33 a y not hex (\C)
a \C33 c abc y not hex (\C)
\C33 '' n not hex (\C)
c \C33 d abc!def n not hex (\C)
c \C33+ d abc!!def n not hex (\C)
a \C33+ f abcdef y not hex (\C)
\C[33] a y not hex (\C[])
a \C[33] c abc y not hex (\C[])
\C[33] '' n not hex (\C[])
c \C[33] d abc!def n not hex (\C[])
c \C[33]+ d abc!!def n not hex (\C[])
a \C[33]+ f abcdef y not hex (\C[])
c \o041 d abc!def y octal (\o)
c \o41+ d abc!!def y octal (\o)
a \o41+ f abcdef n octal (\o)
b \o41 c abc!def n octal (\o)
c \o[41] d abc!def y octal (\o[])
c \o[41]+ d abc!!def y octal (\o[])
c \o[41,41] d abc!!def y octal (\o[])
a \o[41]+ f abcdef n octal (\o[])
b \o[41] c abc!def n octal (\o[])
\O41 a y not octal (\O)
a \O41 c abc y not octal (\O)
\O41 '' n not octal (\O)
c \O41 d abc!def n not octal (\O)
c \O41+ d abc!!def n not octal (\O)
a \O41+ f abcdef y not octal (\O)
\O[41] a y not octal (\O[])
a \O[41] c abc y not octal (\O[])
\O[41] '' n not octal (\O[])
c \O[41] d abc!def n not octal (\O[])
c \O[41]+ d abc!!def n not octal (\O[])
a \O[41]+ f abcdef y not octal (\O[])
a\w+f a=[ *f n word character
a\w+f abcdef y word character
a\W+f a&%- f y not word character
a\W+f abcdef n not word character
a\d+f abcdef n digit
ab\d+cdef ab42cdef y digit
a\D+f abcdef y not digit
a\D+f ab0cdef n not digit
a[b<!>]?cd abcd n failing assertion reached
a[b<!>]?cd acd y failing assertion not reached
## vim: noexpandtab tabstop=4 shiftwidth=4
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