Brief Regular Expression Definition
all Unicode lowercase letters except q and w.
[char-set1 & [char-set2]] Character set intersection. Matches all characters in
char-set1 that are also in char-set2. For ex-
ample, [\x{0}-\x{7f}&[\p{L}]] matches all letters
between 0 and 127.
\x{hhhh} Matches up to 31-bit Unicode hexadecimal charac-
ter specified by hhhh.
\p{UnicodeCategorySpec] (Only valid in character set) Matches characters in
UnicodeCategorySpec. Where UnicodeCat-
egorySpec uses the standard general categories
specified by the Unicode consortium. For example,
[\p{L}] matches all letters. [\p{Lu}] matches all up-
percase letters. See Unicode Category Specifica-
tions for Regular Expressions.
\P{UnicodeCategorySpec] (Only valid in character set) Matches characters not
in UnicodeCategorySpec. For example, [\P{L}]
matches all characters that are not letters. This is
equivalent to [^\p{L}]. [\P{Lu}] matches all charac-
ters that are not uppercase letters. See Unicode
Category Specifications for Regular Expressions.
\p{UnicodeIsBlockSpec] (Only valid in character set) Matches characters in
UnicodeIsBlockSpec. Where UnicodeIsB-
lockSpec one of the standard character blocks
specified by the Unicode consortium. For example,
[\p{isGreek}] matches Unicode characters in the
Greek block. See Unicode Character Blocks for
Regular Expressions.
\P{UnicodeIsBlockSpec] (Only valid in character set) Matches characters not
in UnicodeIsBlockSpec. For example,
[\P{isGreek}] matches all characters that are not in
the Unicode Greek block. This is equivalent to
[^\p{isGreek}]. See Unicode Character Blocks for
Regular Expressions.
\xhh Matches hexadecimal character hh where
0<=hh<=0xff.
\dddd Matches decimal character ddd where
0<=ddd<=255.
Brief Regular Expressions
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