diff options
Diffstat (limited to 'doc/RE')
| -rw-r--r-- | doc/RE | 69 |
1 files changed, 62 insertions, 7 deletions
@@ -1,4 +1,4 @@ -Oniguruma Regular Expressions Version 6.4.0 2017/06/28 +Oniguruma Regular Expressions Version 6.5.0 2017/07/30 syntax: ONIG_SYNTAX_RUBY (default) @@ -52,8 +52,8 @@ syntax: ONIG_SYNTAX_RUBY (default) Not Unicode: \t, \n, \v, \f, \r, \x20 - Unicode: - 0009, 000A, 000B, 000C, 000D, 0085(NEL), + Unicode case: + U+0009, U+000A, U+000B, U+000C, U+000D, U+0085(NEL), General_Category -- Line_Separator -- Paragraph_Separator -- Space_Separator @@ -70,6 +70,16 @@ syntax: ONIG_SYNTAX_RUBY (default) \H non-hexdigit char + \R general newline (* can't be used in character-class) + "\r\n" or \n,\v,\f,\r (* but doesn't backtrack from \r\n to \r) + + Unicode case: + "\r\n" or \n,\v,\f,\r or U+0085, U+2028, U+2029 + + \N negative newline (?-m:.) + + \O true anychar (?m:.) (* original function) + Character Property @@ -133,6 +143,8 @@ syntax: ONIG_SYNTAX_RUBY (default) \Z end of string, or before newline at the end \z end of string \G where the current search attempt begins + \K keep (keep start position of the result string) + 6. Character class @@ -183,9 +195,9 @@ syntax: ONIG_SYNTAX_RUBY (default) Final_Punctuation | Initial_Punctuation | Other_Punctuation | Open_Punctuation space Space_Separator | Line_Separator | Paragraph_Separator | - 0009 | 000A | 000B | 000C | 000D | 0085 + U+0009 | U+000A | U+000B | U+000C | U+000D | U+0085 upper Uppercase_Letter - xdigit 0030 - 0039 | 0041 - 0046 | 0061 - 0066 + xdigit U+0030 - U+0039 | U+0041 - U+0046 | U+0061 - U+0066 (0-9, a-f, A-F) word Letter | Mark | Decimal_Number | Connector_Punctuation @@ -228,6 +240,50 @@ syntax: ONIG_SYNTAX_RUBY (default) Assigning the same name to two or more subexps is allowed. + <Absent functions> + + (?~absent) Absent repeater (* proposed by Tanaka Akira) + This works like .* (more precisely \O*), but it is + limited by the range that does not include the string + match with absent. + This is a written abbreviation of (?~|absent|\O*). + \O* is used as a repeater. + + (?~|absent|exp) Absent expression (* original) + This works like "exp", but it is limited by the range + that does not include the string match with absent. + + ex. (?~|345|\d*) "12345678" ==> "12", "1", "" + + (?~|absent) Absent cutter (* original) + After passed this operator, string right range is limited + at the point that does not include the string match whth + absent. + + (?~|) Absent clear + Clear the effects caused by Absent cutters. + (* This operation is not cancelled by backtrack.) + + * Nested Absent functions are not supported and the behavior + is undefined. + + + (?(condition_exp)then_exp|else_exp) if-then-else + (?(condition_exp)then_exp) if-then + + condition_exp can be a backreference number/name or a normal + regular expression. + When condition_exp is a backreference, both then_exp and + else_exp can be omitted. + Then it works as a backreference validity checker. + + [ backreference validity checker ] (* original) + + (?(n)), (?(-n)), (?(+n)), (?(n+level)) ... + (?(<n>)), (?('-n')), (?(<+n>)) ... + (?(<name>)), (?('name')), (?(<name+level>)) ... + + 8. Backreferences @@ -282,7 +338,7 @@ syntax: ONIG_SYNTAX_RUBY (default) p r.match("<foo>f<bar>bbb</bar>f</foo>").captures -9. Subexp calls ("Tanaka Akira special") +9. Subexp calls ("Tanaka Akira special") (* original function) When we say "call a group," it actually means, "re-execute the subexp in that group." @@ -367,7 +423,6 @@ A-3. Missing features compared with perl 5.8.0 + \l,\u,\L,\U, \X, \C + (?{code}) + (??{code}) - + (?(condition)yes-pat|no-pat) * \Q...\E This is effective on ONIG_SYNTAX_PERL and ONIG_SYNTAX_JAVA. |