v.overlay: fix collapsed lines after snapping#6388
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metzm merged 1 commit intoOSGeo:mainfrom Sep 22, 2025
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nilason
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Sep 21, 2025
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Backported to G84 |
neteler
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Vect_snap_line()can reduce lines/boundaries to zero-length lines with only one vertex. Such lines with only one vertex are not supported byVect_break_lines_list(). Deleting these lines/boundaries is apparently safe because adjoining lines/boundaries will be snapped to the same anchor point, preserving topology. This PR adds a check if a line has been collapsed to one vertex and deletes such lines.