What happens:
When trying to import a file from a wiki project that uses different namespace identifiers for files, the importer gets confused about the colon character in the filename.
e.g. Try to import https://de.wikipedia.org/wiki/Datei:Barmbek.png
You will get The title you are currently trying to import to contains invalid filename characters. warning with Datei:Barmbek.png in the filename input field
Expected behavior:
Autodetect the foreign file namespace and remove it from the title.
Also note, that in this case he keeps the file extension also as part of the filename input field.
Change 363588 had a related patch set uploaded (by Addshore; owner: Addshore):
[mediawiki/extensions/FileImporter@master] Fix ApiDetailRetriever for foreign file namespaces
Change 363588 merged by jenkins-bot:
[mediawiki/extensions/FileImporter@master] Fix ApiDetailRetriever for foreign file namespaces
There seems to be a remaining issue with importing files from foreign namespaces. Steps to reproduce:
You see, that the foreign namespace (Fichier:) became a part of the new file title.
Change 366239 had a related patch set uploaded (by WMDE-Fisch; owner: WMDE-Fisch):
[mediawiki/extensions/FileImporter@master] Remove foreign NS when importing file
Change 366239 merged by jenkins-bot:
[mediawiki/extensions/FileImporter@master] Remove foreign NS when importing file