[QGIS-Developer] GDAL processing algorithms issues due the default output layer extensions weirdly changed

[Andrea Giudiceandrea]

Hi all,

Il 26/02/2024 00:23, Nyall Dawson ha scritto:
 > Hmm, I wonder if it's a plugin changing this setting. I've definitely
 > seen plugins before doing unfriendly things like this...

I also suspected that a plugin may be involved, but I was unable to find 
a common plugin in all the reports.

Now it seems to me more likely that it may be the management of the 
settings, after seeing https://github.com/qgis/QGIS/issues/53204 and 
https://github.com/qgis/QGIS/pull/53458 precisely relating to the 
DefaultOutputRasterLayerExt and the DefaultOutputVectorLayerExt settings 
and the -1 index.


Il 26/02/2024 01:38, Even Rouault ha scritto:
 > For example when using the ".xml" extension as a vector output, you'll
 > probably be surprised that the obscure PDS4 vector driver (tabular data
 > for planetary datasets) is used!

> ==> Those settings should actually be deprecated and replaced by others 
> that save a GDAL driver name ... plus an extension, because the "MapInfo 
> File" driver produces quite different output if you chose ".tab" or 
> ".mif" (or the GeoJSONSeq driver that will use different separators if 
> you select the ".geojsonl" or ".geojsons" extensions)

The problem occurs also when saving the algorithm output to a file, 
instead of a temporary output, and choosing an extension.


Best regards.

Andrea