Add a "change language" option in GRASS GUI

[antoniorocha]

Instead of changing GRASS language in init.bat files (or other), the user would change its language without quitting GRASS session.

Hamish comment was: I would suggest to put it in Config->GRASS working environment->

I suppose it would have to be a g.gisenv GRASS variable not an environment variable to work system-wide. But then we've have to add some G_getenv() -> setenv() magic in G_parser() and the start of wxgui.py?

[glynn]

Replying to antoniorocha:

Instead of changing GRASS language in init.bat files (or other), the user would change its language without quitting GRASS session.

Is there some reason why GRASS shouldn't just use the same locale settings as every other application?

Currently, this doesn't work on Windows, as localisation relies upon the LANG/LC_* environment variables being set, and Windows doesn't set those, so init.bat needs the fix proposed ​here or something similar.

This should probably be closed as "invalid" once someone opens a bug report for LANG not being set on Windows.

[marisn]

Replying to glynn:

Is there some reason why GRASS shouldn't just use the same locale settings as every other application?

Ability to switch application language instead of changing whole work environment language is a nice feature. I use it quite often for QGIS and KDE applications (bug reports, testing l18n regressions etc.). Not everyone is capable of changing system-wide locale settings (read - restricted user rights on shared computers) also "export LANG" is not an lamer friendly way how to do this.

[neteler]

Replying to glynn:

Is there some reason why GRASS shouldn't just use the same locale settings as every other application?

Yes: If I am visiting for example Japan/China/Brasil/... I am not necessarily able to understand the local language, i.e. use the localized menus of the PC provided to me.

Currently, this doesn't work on Windows, as localisation relies upon the LANG/LC_* environment variables being set, and Windows doesn't set those, so init.bat needs the fix proposed ​here or something similar.

This should probably be closed as "invalid" once someone opens a bug report for LANG not being set on Windows.

If it is better to have a separate bug report for this, let's do it. But it won't change the need for a solution.

Markus

[neteler]

See also ​http://trac.osgeo.org/qgis/ticket/3634 "GRASS language is taken from system, not from QGIS settings"

[lucadelu]

implemention of language preference

[lucadelu]

I implemented it for grass7, please check the diff attached.

Best Luca

[neteler]

When adding the "LANGUAGE" variable, too, it works nicely.

[lucadelu]

Committed as r49670 with "LANGUAGE" variable added.

TODO: replace locales in combobox, reduce list to only installed locales

[lucadelu]

Replying to lucadelu:

Committed as r49670 with "LANGUAGE" variable added.

TODO: replace locales in combobox, reduce list to only installed locales

some improvement of this commit was done by MartinL in r49910, someone has an idea how to reduce list to only installed locales?

[martinl]

Please try recent version...

[martinl]

Update: changing language settings from wxGUI should work in 6.4.3. It still requires GRASS restart even in GRASS 7. Moving milestone to 6.4.4.

[marisn]

Replying to martinl:

Update: changing language settings from wxGUI should work in 6.4.3. It still requires GRASS restart even in GRASS 7. Moving milestone to 6.4.4.

It could be possible to try to reset active WXGUI instance language instantly, still it's not possible to change parent process environment and thus anything not inheriting environment from WXGUI AFTER language change will still be in previous language. Save, restart cycle ensures that GRASS gets the new language and probably locale too, from the start and thus whole GRASS session has correct LANG and other parameters (CLI, all WXGUI instances etc.). Hope that clears a bit.

[marisn]

Language switching is working in 7. As GRASS 6 should be feature frozen, moving milestone and closing as implemented. Issues with its implementation in GRASS 7 should be tracked in separate tickets.