mozilla/source-map — pull request #9 by ConradIrwin (2012-02-28 21:09:50+00:00)
Title: Fix off-by-one error

Lines should be stored 0-based according to the current version of the spec:

https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit

I clarified this instruction with concavelenz on irc://irc.freenode.net#chromium, and it is implemented that way in the current dev versions of chrome.