Hi Yogesh, I am not sure what you are trying to accomplish, but I think that you would benefit from learning a little more about how regular expressions work. I have looked quickly and found the following link: http://gnosis.cx/publish/programming/regular_expressions.html There are probably many other web sites on the subject. There are many books on the subject, too. Have fun reading! Etienne Yogesh Sharma wrote: > I am using sableCC for defining grammar to validate command line inputs > (cli). Please suggest any work around solution. > I am facing some problem , please suggest something. >... -- Etienne M. Gagnon, Ph.D. http://www.info2.uqam.ca/~egagnon/ SableVM: http://www.sablevm.org/ SableCC: http://www.sablecc.org/
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