[gdal-dev] Failure to convert to Airy

[Even Rouault]

> used to work before the GDAL3+PROJ6 combo.

That would be surprising: with GDAL 2.4 and PROJ < 6, you also get an error, 
but with a different message:

$ gdalinfo --version
GDAL 2.4.1, released 2019/03/15

$ echo 4.897 52.371 | \
	gdaltransform -s_srs +proj=longlat -t_srs "+proj=airy +wktext"

ERROR 6: Failed to initialize PROJ pipeline from `+proj=airy +wktext' to `
+proj=longlat +ellps=WGS84 +no_defs': malformed pipeline
328249.00331295 4987937.10144727 0


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