CSV for VRT SrcDataSource relativeToVRT=1 fails with CSV:filename.xyz

[drf5n]

I was attempting to use some CSV formatted files named *.xyz using the VRT format.

When in the same directory as the files, a VRT file identified with "CSV:H08724.xyz" worked and found all the features, with or without the relativeToVRT="1" attribute. However, when changing into the parent directory and running a 'ogrinfo -so -al Downloads/H08724.vrt' the command would with an error, and features would not be found or counted:

$ ogrinfo -ro -so -al Downloads/H08724.vrt |less ERROR 1: Failed to open datasource `Downloads/CSV:H08724.xyz'. INFO: Open of `Downloads/H08724.vrt'

using driver `VRT' successful.

Layer name: H08724 Geometry: Point Feature Count: 0 Layer SRS WKT:

....

versus:

$ ogrinfo -ro -so -al Downloads/H08724csv.vrt |less INFO: Open of `Downloads/H08724csv.vrt'

using driver `VRT' successful.

Layer name: H08724 Geometry: Point Feature Count: 13373

Renaming or symlinking the .xyz file to .csv and using the 'H08724.csv' with the relativeToVRT="1" attribute worked in both cases.

[Even Rouault]

trunk r27079 "OGR VRT: make relativeToVRT=1 work with CSV:filename or GPSBABEL:driver:filename (#5419)"