NDS Rom Trimmer v0.22a

Heres a new version that fixes a couple of reported problems. The output filename munging routine has been re-written and overall is more cautious in regards to trimming. Thanks to _psychowood_ and Rejk. I haven’t tested this version much and I’m thinking it will need more tweaking to get the right compromise between trimming and preventing overtrim. As always if you find problems please comment.

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