modestmaps/modestmaps-js — pull request #21 by aibram (2012-06-19 14:24:10+00:00)
Title: Fix negative coordinate column wrapping

When panning west, past coordinate column -4, the coordinate column would be wrapped incorrectly causing tiles to not show. For example, column -5 was wrapped to -1, when it should have been wrapped to 3.

This fixes mapbox/tilemill#1395