R Under development (unstable) (2023-05-24 r84463 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> options("rgdal_show_exportToProj4_warnings"="none")
> library(sp)
The legacy packages maptools, rgdal, and rgeos, underpinning this package
will retire shortly. Please refer to R-spatial evolution reports on
https://r-spatial.org/r/2023/05/15/evolution4.html for details.
This package is now running under evolution status 0 
> 
> if (require(rgeos, quietly = TRUE)) {
+ g = SpatialGrid(GridTopology(c(0,0), c(1,1), c(3,3)))
+ p = as(g, "SpatialPolygons")
+ over(g,g)
+ over(p,p)
+ over(p,p, minDimension = 0) # orders; different names
+ over(p,g)
+ over(g,p)
+ 
+ over(p,p,returnList=TRUE)
+ over(p,p,returnList=TRUE, minDimension=0)
+ over(p,p,returnList=TRUE, minDimension=1)
+ over(p,p,returnList=TRUE, minDimension=2)
+ over(p,p[1:6],minDimension=2)
+ 
+ x2 = x1 = cbind(c(0,1,1,0,0), c(0,0,1,1,0))
+ x1[,1] = x1[,1]+0.5
+ x1[,2] = x1[,2]+0.25
+ sp = SpatialPolygons(list(
+  Polygons(list(Polygon(x1)), "x1"),
+  Polygons(list(Polygon(x2)), "x2")))
+ pt = SpatialPoints(cbind(0.5,0.5)) # on border of x1
+ row.names(pt) = "pt1"
+ over(pt,sp)
+ over(pt,sp,returnList=TRUE)
+ 
+ rgeos::overGeomGeom(pt,sp)
+ rgeos::overGeomGeom(pt,sp,returnList=TRUE)
+ 
+ plot(sp)
+ plot(pt,add=TRUE,col='red',pch=16)
+ #    x1     x2 
+ #	"F0FF" "0FFF" 
+ # it would be nice to have these sorted "2, 1" instead of "1, 2" - use
+ rgeos::overGeomGeom(pt,sp,returnList=TRUE, minDimension = 0)
+ 
+ rgeos::overGeomGeom(pt,pt,minDimension=2)
+ rgeos::overGeomGeom(pt,pt,minDimension=1)
+ rgeos::overGeomGeom(pt,pt,minDimension=0)
+ }
rgeos version: 0.6-3, (SVN revision 696)
 GEOS runtime version: 3.11.2-CAPI-1.17.2 
 Please note that rgeos will be retired during October 2023,
plan transition to sf or terra functions using GEOS at your earliest convenience.
See https://r-spatial.org/r/2023/05/15/evolution4.html for details.
 GEOS using OverlayNG
 Linking to sp version: 1.6-0 
 Polygon checking: TRUE 

pt1 
  1 
> 
> proc.time()
   user  system elapsed 
   0.48    0.06    0.53