Re: File sort order
- From: <tpgww@xxxxxxxxxxx>
- To: emelfm2@xxxxxxxxxxxxx
- Date: Tue, 5 Oct 2010 18:40:00 +1100
On Mon, 04 Oct 2010 19:26:26 -0400
"Prof. John C Nash" <nashjc@xxxxxxxxxx> wrote:
> This is an issue that is not unique to elemfm2. It also afflicts
> gnome-commander and I'd
> guess some other apps. It does not affect ls.
>
> I'm running Ubuntu Lucid 10.04.1 (Gnome). I have a directory with a number of
> files. Here
> are a few of the names:
>
> jnrv_07312010.pdf
> jnrv101004.tex
> jnrv20100811.ps
> jnrv2010a.tex
>
> But the sorted pane for this directory (and in Gnome-Commander) is
>
> jnrv2010a.tex
> jnrv101004.tex
> jnrv20100811.ps
> jnrv_07312010.pdf
>
> Does anyone know of documentation of this? I suspect some strange collating
> sequence rules
> that have been embedded somewhere that will be awkward to find. In this case,
> there is
> really no problem, but I came across this in a directory with several hundred
> files and
> couldn't find one I'd just moved into the directory, at least not for a while.
Name-sorting relies on comparing strings created with glib functions - by
default, g_utf8_collate_key(), or if built with support for gtk >= 2.8, then
g_utf8_collate_key_for_filename().
According to glib documentation, they both "depend on the current locale", but
the latter treats the dot '.' as a special case, and treats numbers
intelligently so that "file1" "file10" "file5" are sorted as "file1" "file5"
"file10".
Notwithstanding such claim, quite some time ago we investigated reported
sorting anomalies by playing with the inherent collation-string creation
process, but eventually concluded there's nothing reasonably practicable to be
done to improve it.
Regards
Tom
>
> For completeness, mc gets the ordering
>
> jnrv101004.tex
> jnrv20100811.ps
> jnrv2010a.tex
> jnrv_07312010.pdf
>
> which increases my suspicions about collate sequence etc.
>
>
> JN
>
>
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