Not sure if it's possible, but it's will be great if tilix support to open several session at the same time.
Actually, it's limiting to open only one file on the file chooser "Load Session"
At this moment, if i want to open several session, i need to open one session per one session ...
There is support from the command line with the --session parameter where you can specify it multiple times. The UI doesn't currently support it as you noted.
The file open dialog now supports selecting multiple files.
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The file open dialog now supports selecting multiple files.