[sword-devel] diatheke search type regex and the dot ?

[Jaak Ristioja]

Another possibility is to use Boost.Xpressive [1], which I think
supports the Perl regular expressions at runtime, and also static
regular expressions using C++ syntax:

    using namespace boost::xpressive;
    // sregex rex = sregex::compile( "(\\w+) (\\w+)!" );
    sregex rex = (s1= +_w) >> ' ' >> (s2= +_w) >> '!';

But I suppose you don't want to introduce Boost as a dependency.

J


[1]: http://www.boost.org/doc/libs/1_63_0/doc/html/xpressive.html

On 07.03.2017 03:17, Troy A. Griffitts wrote:
> Yeah, so this page shows that c11x regex is still mostly unsupported in gcc:
> 
> http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.tr1
> 
> (see section 7)
> 
> And the old school gnu regex we use otherwise I don't think knows
> anything about wide chars.  It simply compares bytes and does have a
> clue if some should be considered part of the same byte.  I suspect that
> because nowhere do we tell it that we're giving it UTF-8.
> 
> Ultimately my hope is that gcc will improve eventually and solve our
> problem for us.  We could use
> 
> We could add an option to use ICU RegexMatcher, but I'm still holding
> out for our compiler.
> 
> Troy
> 
> 
> On 03/06/2017 05:52 PM, Karl Kleinpaste wrote:
>> On 03/06/2017 05:25 PM, Greg Hellings wrote:
>>> being off by 2 would seem strange to me
>> I don't understand this question at all.
>>
>> 0xE2 = 226 = 0342
>> 0x80 = 128 = 0200
>> 0x93 = 147 = 0223
>>
>> There's no off-by error at all.
>>
>> "od" is the "octal dump" tool; given -c, it tries to dump characters,
>> but outside 7-bit ASCII, it still dumps octal.
>>
>> For those familiar with dc(1), this will make sense
>> $ dc
>> 8o
>> 226p
>> 342
>> 128p
>> 200
>> 147p
>> 223
>> 16i
>> 0XE2p
>> 342
>> 0X80p
>> 200
>> 0X93p
>> 223
>>
>> The interesting questions are why C++11 regex can't find /en dash/,
>> and why non-C++11 regex doesn't understand multibyte.
>>
>>
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