If your goal at looking through the source is to discover what regexp the module will use for a certain type of match, this is the trick I use:

perl -MRegexp::Common=RE_ALL -E 'say $RE{num}{real}'
(?:(?i)(?:[-+]?)(?:(?=[.]?[0123456789])(?:[0123456789]*)(?:(?:[.])(?:[
+0123456789]{0,}))?)(?:(?:[E])(?:(?:[-+]?)(?:[0123456789]+))|))

[download]

Of course there are many other reasons for reading the source. I've just found this shortcut useful when I want to try to understand the behavior of the patterns that are being used, or when an expression's behavior is almost but not quite what I need.


Dave

In reply to Re: Regex: What does ?k: mean? by davido
in thread Regex: What does ?k: mean? by hoppfrosch

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