Em 08-08-2016 19:25, Bernardo Ezequiel Contreras escreveu:

Hi,

�� have you try with ��(World>>Help>>Help Browser>>Regular Expressions Framework>>Usage)

SUBEXPRESSION MATCHES

After a successful match attempt, you can query the specifics of which

part of the original string has matched which part of the whole

expression.

(...)

Thanks, but thing is: my need is little more complex than finding sequences. I'm looking for expressions in natural language text. The expressions must be extracted without ambiguities so I have cases for occurrences in the beginning of line (aka '^(#\w+)([\s.,;\:!?]*)') in the middle of the line (aka '([\s.,;\:!?]+)(#\w+)([\s.,;\:!?]+)') or at the end (which may be simplified to the second case...). So, if I find several hashtags in a text like:

'A pol��tica no Brasil est�� complicada #FAIL porque a corrup��o impera #CRIME. De qualquer forma os #PETRALHAS, que tudo justificam, levam o pa��s ao #CAOS'

I want two things:

1st and obvious: #( '#FAIL' '#CRIME' '#PETRALHAS' '#CAOS')
2nd: the line minus hashtags: 'A pol��tica no Brasil est�� complicada porque a corrup��o impera. De qualquer forma os, que tudo justificam, levam o pa��s ao'

When I use regexps to process the line, for instance:

bfr := line copyWithRegex: '#\w+' matchesReplacedUsing [ :e | '' ].

I can have trouble because it will extract things like #ANOTA��O# which is not a hashtag but will match.

And I'm trying to avoid doing the Lex/Yacc thing here :D

Best regards,

CdAB

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