improve whitespace handling in image processing

[serap]

Hi Brad,

thank you for your work on Text::Textile.

We love your module and impressed by your regex skills. However we feel that we found a bug in the image parsing part.

Please check an hopefully apply the patch if you agree with my version.

NB: I have not checked other tags for the same issue ...

Best regards and Happy Easter! Serap

prevent images parser from interpreting ! noimage ! as image tag

(?:(?<=[^!])\s+)?

optionally match one or more spaces that must not be preceeded by an exclamation mark. if any of the optional alignment or css options are used a space is acceptable otherwise not.

[pepl]

Hey Brad,

This pull request would be really helpful if applied.

Are you still interested in the module? Do you want to orphan the CPAN module?

Regards, Michael

[serap]

Hey Brad,

thank you for merging!

Regards, Serap