From: ts <decoux@...>
Date: 2002-07-27T20:57:01+09:00
Subject: Re: regex: move minus sign to front for negative numbers w trailing "	-"

>>>>> "P" == =?iso-8859-1?Q?=22Pe=F1a=2C Botp=22?= <iso-8859-1> writes:

P> 99.99-  9999-    99-99  99-99-  99999.99-       9.99-

 It really depend on what you want : for a regexp the most difficult task
 is the specification. When you have a *complete* specification, then you
 can try to write it. For example I've added some cases

pigeon% cat b.rb
#!/usr/bin/ruby
DATA.each do |line|
   puts line
   puts line.gsub(/(^|[^-.\d])(\d+(?:\.\d+)?)-(?=[^-.\d]|$)/,'>>\1-\2<<')
   puts
end
__END__
99.99-  9999- 9.- .99- -99.99- 9.9-.  99-99  99-99-  99999.99-       9.99-
pigeon% 

pigeon% b.rb
99.99-  9999- 9.- .99- -99.99- 9.9-.  99-99  99-99-  99999.99-       9.99-
>>-99.99<< >> -9999<< 9.- .99- -99.99- 9.9-.  99-99  99-99- >> -99999.99<<      >> -9.99<<

pigeon% 



Guy Decoux