In D16806#358163, @apol wrote:

Maybe it would make sense to use the SyntaxHighlighting framework?

Actually, we already use KSyntaxHighlighting, but still only Repository class. We plan rewrite our highlighting code on KSyntaxHighlighting, but we support adding new variables and functions in runtime for different sessions and backends, and as I know KSyntaxHighlighting don't have features for adding new variables and functions, so it is not very easy and we are planning start work on this after 18.12

D16333 was merged.

Well, @filipesaraiva, I hope, that you have read my message and you don't write answer, because you haven't objections.
The release is soon and Alexander agree with this patch, so I merge this patch to master.
We could return to this theme later, after 18.12, if needed.

In T9980#166420, @starbuck wrote:

Upload from within programs is not possible due to abuse reasons.

Could you explain it please? Do you mean, that KNS3::UploadDialog and KNS3::DownloadDialog don't work, because server reject any download/upload requests (except from web interface)?

The server does not recognize the category Cantor (Octave) to which you are trying to upload.

As I see, category for Octave on kde.store.org for this is "Octave Worksheet". Is visible name equals to category name?

So, @filipesaraiva, what do you think about it?
We plan to merge this code to master November 7, if there aren't objections.

Small improvments (change else if to else)

Added cyclic moving for tabs