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I use this a lot, usually with the shorter command-line invocation ('-Dr', available if perl was built with debugging enabled). However the output was designed primarily for internals debugging, and is likely to be more scary than helpful to the casual user.

Various people have taken advantage of the information it provides to offer a friendlier interface to regexp debugging. Though I haven't tried any of them, I'm aware of ReBug (I believe this is open source, but I can't get to the website: the author gave a talk on it at the 2001 OSCON), Komodo (commercial, with "try before you buy"), and The Regex Coach ("donationware", donate if you like it) which was recently mentioned on PM.

Hugo


In reply to Re^2: How will my regular expression match? by hv
in thread How will my regular expression match? by hv

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    [LanX]: I remeber M::S (it was dialog driven?) to be buggy
    [stevieb]: As far as Dist::Zilla goes, I don't like installing that other than on systems my test platorm runs on. I find it too heavy. I prefer being able to glean a Makefile.PL
    [LanX]: what's frustrating me is that a distribution has lots of dupplicated info
    [stevieb]: LanX I don't know if it's dialog driven; I just use it in the simplest of terms (just run module-starter at the CLI, and the very last couple of lines are how I use it.
    [stevieb]: which dist are you speaking of regarding dups, LanX?
    [LanX]: readme version number and so on ...
    [stevieb]: with M::S, you can also add other tags, but defaults work... such as --license=perl --eumm
    [LanX]: I'm not a big fan of pure make, apparently the auto generated ones are so complicated to be able to work with all possible makes

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