[texdoc] Bug#561785: texlive-base: texdoc does not use standard pdf-viewer defined in KDE

[Norbert Preining]

Hi Manuel,

here is a bug report from Debian that suggests something regarding
viewer selection. Can you please comment on it?

On Sun, 20 Dec 2009, Johannes Fichtinger wrote:
> Hallo!
> 
> When calling texdoc PACKAGENAME in KDE, the pdf description of the package is actually opened with GIMP, instead of using the KDE system-wide setting for the default pdf viewer, e.g. okular.
> 
> The problem arises due to a wrong selection of the application based on the existance of certain commands in /usr/share/texmf-texlive/scripts/texdoc/texdoc.tlu (starting from line 747):
> 
>            viewer_pdf      = first_in_path {
>                 {'gnome-open',  '(gnome-open %s) &'},   -- gnome
>                 {'kde-open',    '(kde-open %s) &'},     -- kde 4
>                 {'kfmclient',   '(kfmclient exec %s) &'}, -- older kde
>                 {'exo-open',    '(exo-open %s) &'},     -- xfce
>                 {'xdg-open',    '(xdg-open %s) &'},     -- freedesktop.org
>                 {'evince',      '(evince %s) &'},
>                 {'okular',      '(okular %s) &'},
> 		[...] 
> 
> Selecting the pdf-viewer based on the existence of eg. gnome-open in the path is incorrect since being in a KDE session still gnome-open might be found in the path. It would be better to base the selection instead on some environment variables. KDE provides eg.
> 	declare -x KDE_FULL_SESSION="true" 
> which can be used to detect if we are in a running KDE session. Gnome might provide similar variables.
> 
> Johannes

For Manuel: This is the texdoc version as shipped on the DVD, not that
fixes you put it after release.

Best wishes

Norbert

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Norbert Preining                preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan               TU Wien, Austria            Debian TeX Task Force
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