Project not considered dirty when it has no layers

[qgib]

Author Name: Sebastian Dietrich (Sebastian Dietrich)
Original Redmine Issue: 13887
Affected QGIS version: master
Redmine category:project_loading/saving

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When a project has no layers in it, it is never considered dirty, e.g. the user is not asked to save the changes when exiting QGIS.

[qgib]

Author Name: Sebastian Dietrich (Sebastian Dietrich)

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To reproduce:

• Create a new project
• Edit some project attributes, e.g. the title, a project variable, a default marker, ...
• Exit QGIS

You are not asked whether you want to save the changes.

[qgib]

Author Name: Sebastian Dietrich (Sebastian Dietrich)

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To reproduce in a weird way:

• Load a project with some layers
• Delete all layers
• Exit QGIS

You are not asked whether you want to save the changes.

[qgib]

Author Name: Sebastian Dietrich (Sebastian Dietrich)

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• done_ratio was changed from 0 to 50
• assigned_to_id was configured as Sebastian Dietrich
• fixed_version_id was configured as Future Release - Nice to have

[qgib]

Author Name: Sebastian Dietrich (Sebastian Dietrich)

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• fixed_version_id removed Future Release - Nice to have
• done_ratio was changed from 50 to 0
• assigned_to_id removed Sebastian Dietrich

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• crashes_corrupts_data was changed from 1 to 0

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• regression was configured as 0
• easy_fix was configured as 0

[qgib]

Author Name: Giovanni Manghi (@gioman)

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End of life notice: QGIS 2.18 LTR

Source:
http://blog.qgis.org/2019/03/09/end-of-life-notice-qgis-2-18-ltr/

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• resolution was changed from to end of life
• status_id was changed from Open to Closed