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The CI currently fails because the latest libhandly release is not yet
in rawhide. Let's add libhandy master to our image to fix the pipeline.

We can't use HdyStatusPage right now because it would break DnD, as
reported in gtk#808

So, update the styling instead.

Currently, gtk_builder_add_from_resource silently fails with old libhandy
version which leads to weird crashes. Let's print the returned error to
be obvious what is going on.

Nautilus currenlty crashes with libhandy version older than 1.1.90.
Let's bump the dependency to prevent that.

We have been matching the Star column by it's title, ever since it was
first introduced by commit a9c446af

Worse: we have been using an untranslated string. This means that if
the string is localized clicking the star icons does nothing.

Match the column by its key in the hash table instead.

While "Star" is 4 chars long in English, it's longer in other languages.

This means the column may become much wider than needed for displaying
a small star icon, which both looks bad and takes away space from other
columns.

Since this is a column of star symbols, we don't really need a title.

But setting an empty title makes the columns too narrow (16px), which
gets covered by the overlay scrollbar.

So, in addition to removing the title label, set a 48 fixed width for
the column, which provides enough gutter for the overlay scrollbar.

Or, rather, dim the dirnames so the basenames stand out.

If the user enters a relative path, we get absolute paths as in the
completion popover, which is quite jarring and makes it less useful.

Instead, truncate the prefix, such that the completions dropdown text
aligns with the entry text.

Replace g_strchomp and g_strchug with g_strstrip, for simplicity.

Improves tab completion in the location entry. GtkEntryCompletion
shows a popup when there are multiple matches, so you can choose one
or continue typing. The completion's tree model is populated
dynamically as you type using a GFilenameCompleter.

#1171

When you press Tab in the location entry and there's no autocomplete
suggestion, play an error bell instead of closing the location entry.

Closes #1171

It hasn't been useful for quite a while, and messes with the visual alignment
of the GtkEntryCompletion.