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Adds element validators to Drupal that that fit into Drupal's form API. Instead of writing the (almost) same _validate function over and over, you can use the element's #element_validate property when building a custom form. Drupal doesn't provide out-of-the-box functions to assign to that. (You'd still have to write the validation shell yourself.) This module does.

Implemented:

• Integer (with optional #min and/or #max)
• Number (with optional #min and/or #max)
• E-mail

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