Strings extracted from gcodetools_*.inx don't preserve spaces and newlines so gettext can't find translation for them.
I hope my trivial patch will fix this issue.
Same issue as tracked in Bug #980527 “Gcodetools: Unlocalized messages”? <https://bugs.launchpad.net/inkscape/+bug/980527>
~suv> Same issue as tracked in Bug #980527 “Gcodetools: Unlocalized messages”?
Yes. Note that all the INX files are generated based on gcodetools-dev.inx and that it is not necessary to patch all files individually.
Bug watches keep track of this bug in other bug trackers.
I hope my trivial patch will fix this issue.