Provide regex-style --omit

[nedbat]

In http://bitbucket.org/ned/coveragepy/issue/14/o-option-no-longer-works-with-relative#comment-59772, <> asked for regex-style module omission.

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• Bitbucket: https://bitbucket.org/ned/coveragepy/issue/36

[nedbat]

Original comment by Zooko O'Whielacronx (Bitbucket: zooko, GitHub: zooko)

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For what it is worth I don't currently need this and am not particularly in favor of it. There is a famous quote
from Jamie Zawinski: "Some people when they have a problem say 'I know! I'll use a regex!'. Now they have two problems."

[nedbat]

Original comment by Zooko O'Whielacronx (Bitbucket: zooko, GitHub: zooko)

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This is a related ticket: http://bitbucket.org/ned/coveragepy/issue/34/enhanced-omit-globbing-handling

[nedbat]

I won't be adding regex matching, but in <<changeset b03faea6d93f (bb)>> both --omit and --include both use fnmatch to match filename patterns.