I'm currently using Debian 6 with Xfce desktop, and I can't find any setting to make Thunar sort files properly; i.e., by ASCII order. I haven't been able to turn up anything via search engines either. Is there a setting in some config file somewhere that will do this?
3 Answers
As of Thunar version 1.6.10 (Xfce 4.12), this is still broken
There is a good alternative to Thunar, however. LXDE's default file manager is PCManFM, and it's a perfect stand-in for Thunar. Not only does it have a toggleable option for case-sensitive sorting, it also has tabs, side-by-side windowing, a tree view as well as the more-common "Places" view, and a host of other options that Thunar doesn't have. This isn't a band-aid solution, it's a perfectly suitable replacement. From the aforementioned article, here is a list of features:
- Full gvfs support with seamless access to remote filesystems (Able to handle sftp://, webdav://, smb://, ...etc when related backends of gvfs are installed.)
- Thumbnails for pictures (default only for local pictures) with optional EXIF support
- Desktop management - shows wallpaper and desktop icons, highly customisable, with possibility to have different wallpapers on each desktop and on each monitor
- Bookmarks - saved places. You can see them in the left panel of PCManFM. Visible from other Gtk+ applications.
- Multilingual (translated in several languages)
- Can be started in one second on normal machine
- Tabbed windows (similar to Firefox tabs)
- Volume management (mount/unmount/eject, requires gvfs) with optional automounting
- Drag & Drop support
- Files can be dragged among tabs
- File association support (e.g. default application to open)
- Provides icon view, compact view, detailed list view and thumbnail view.
- Standard compliant (follows the FreeDesktop.org guidelines)
- Clean and user-friendly interface (GTK+ 2)
- Trash can support
- Applications menu virtual folder support
- Applications system menu full editing is available
- File system advanced search
- Optional two-panel view mode
- Full accessibility support for persons with disabilities
- A possibility to have different view options for some folders
- Customizable main window layout
- Third-party plugins support
- Extended terminal emulators support
- File templates support (both GNOME and KDE styles are supported) to simple creation of new files

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The normal thing to try is setting LC_COLLATE=C
in your environment, but according to Debian bug 436524, Thunar does not respect that setting.
In that bug, the suggestion is to set MiscCaseSensitive to True in ~/.config/Thunar/thunarrc
.
I don't know if that sorts symbols first or not, but it might help.
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1As of v.1.6.10 (early year 2017) neither of this works (or not for me, on OpenSuse 42.2): It is not even Case Sensitive! – Rolazaro Azeveires Feb 27 '17 at 01:55
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2As of 1.8.15 thunar respects
LC_COLLATE=C
. However, you will need to runthunar --quit
to kill the existing thunar process, and start a new one with the environment variable set (thunar --daemon &
for daemon,thunar
for one-offs) – rjh Aug 29 '20 at 19:16
I click on the column header, "Name", and it sorts alphanumerically. You could go into Preferences and unselect "Sort folders before files" to have the entire list sorted (instead of grouped).

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No, that still doesn't sort properly...still getting '5' sorted before '0A' and the like. – Wolf Apr 05 '11 at 13:32
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It sorts '0A' before '5' in Thunar 1.0.2. Make sure that the sort is the correct direction. The default may not sort them 'correctly', but after sorting, it is correct. – Arcege Apr 07 '11 at 01:24
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I should have been more clear: the '5' in my example above should actually be 5 followed by non-digit characters. Bare '5' does after '0A'. But it also sorts '5' after '05c', and '01' after '0A'. And yes, the sort is in the correct (ascending) direction. – Wolf Apr 07 '11 at 20:21
A-Z
beforea-z
with[ \ ^ ] _ \`` between them... Or do you mean that the Latin alphabetic characters sort together and the symbols sort higher or lower than the alphabetic characters (instead of
=Amixing in with all the
A` entries?... btw. I don't know how to do it for Xfce, and I gave up looking for a solution to this Latin Alphabet collation order in nautilus... I found that 'PCMan File Manager' sorts all the symbols to the top (the rest got to the bottom) and is case insensitive. but I just got used to nautilus :) – Peter.O Apr 04 '11 at 12:52