regex - Match a Regular Expression by simple 2 cases: -

i'm trying use regex pattern in fpc (free pascal) - more here: http://wiki.freepascal.org/ide_regular_expressions

however! can't determine how match first occurrence (if any) of 3or4 lowercase (a-z) character strand.

i'd proceed trying same expression time allowing upper case & numbers in make 3or4 char strand.

help appreciated! :]

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for example (things i've tried + examples):

s := 'my name'; // want 'ame' portion 1st since there exists consecutive string of 3 lowercase chars.  // attempts:     splitregexpr('[[:alnum:]]{3,4}'); splitregexpr('[a-z]{3,4}'); splitregexpr('[[:alnum:]]{3,4}?'); 

in response ken white, think right link, no? http://www.gnu-pascal.de/gpc/regex.html understand definitions, fail see how use them create (for example i'm trying do) match patterns , returns them.

here program extracting 3 or 4 lowercase character sequences.

{$apptype console} {$ifdef fpc}{$mode delphi}{$endif}  uses   regexpr;  var   expr: tregexpr;  begin   expr := tregexpr.create;    expr.expression := '[a-z]{3,4}';    if expr.exec('my name bunny.')     repeat       writeln(expr.match[0]);     until not expr.execnext;    expr.free;   readln; end.