Since two null QVariants can be reported as not equal if they have
different underlying types we need to ensure that we don't flag
this situation as a changed value.
Now fields using text edit widgets will keep the column filter
as the entered text.
Additionally, the extended filter has been improved to always
take the initial filter from the current filter, even if it's
not an extended filter.
(fix#12422)
This commit adds a new mode to the attribute table dialog for searching
and filtering features. When activated (using a button on the toolbar
or by pressng CTRL+F), the dialog will switch to form view and all
widgets are replaced with their search widget wrapper variant.
Alongside each widget is a tool button with options for controlling
the search/filter behaviour for that field, eg "equal to", "not equal
to", "is null", "greater than", etc.., with the options presented
matching themselves to the corresponding field and widget type.
New buttons appear at the bottom of the form for either selecting
matching features (with options for add to selection/remove from
selection/select within current selection) or filtering features
in the table (with options for adding features to a current filter
or further restricting a current filter).
Sponsored by SIGE
fix#14582
See: https://hub.qgis.org/issues/14582
The commit removes the a-flag when the grass region for raster analysis is set. The a-flag causes in some cases unwanted rounding of raster extend / resolution, and should not be set hardcoded in processing. It is usually used in combination with the "res" option.
For aligning the pixels of the GRASS region to a specific raster, the align option should be used (and not the a-flag). See: https://grass.osgeo.org/grass70/manuals/g.region.html
GRASS 6.4 algs do not use the a-flag either, which explains why this bug appears only for GRASS 7.
