How does extended filename presentation work?

[piotr-dobrogost]

After opening two remote files in lnav with the following paths
some_host:/a/b/c/x/file.log
and
some_host:/a/b/d/x/file.log
and pressing left arrow key to see extended filenames lnav shows
[c]/file.log
or
[d]/file.log for entries from the first and the second file respectively.
c and d are the first different directories in these two paths.
Is this the algorithm used for choosing what to show in brackets?
Is this documented somewhere in the docs?

[tstack]

Is this the algorithm used for choosing what to show in brackets?

Yes, the unique portions of the name are shown in the square brackets.

Is this documented somewhere in the docs?

I added a mention in the UI section.

Note that you can press the left arrow key again to show the full path.

[piotr-dobrogost]

Additional question, why is that after invoking lnav with
lnav 'some_host:/some/path/to/logfile*'
the path shown is of the form
/tmp/lnav-user-1002-work/remotes/some_host_/some/path/to/logifle1 etc.
but after invoking lnav the second time with the same arguments the path shown is of the form
some_host:/some/path/to/logfile1' etc. ?

Can the path has proper (the latter) form the first time lnav is invoked?