Menu extension/insertion i18n problems

[Christian Stimming]

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Various people are still reporting the problems with menu insertion, where the 
symption are console messages like

GnomeUI-WARNING **: gnome_app_insert_menus_custom: couldn't find
insertion point for menus!

You don't get that in LANG=C and also not for a number of other 
relatively-western locales (e.g. da_SK, sv_SE, da_DK, de_DE for fine on my 
system), but with other locales these problems keep on coming. On my system, 
these are e.g. fr_FR, ru_RU, zh_TW. 

When you uncomment the fprintf in gnc-menu-extensions.c:357, it turns out that 
these problems occur when we address something inside a menu that has been 
created through the macros GNOMEUIINFO_MENU_*, described in Gnome-UI's page 
about gnome-app-helper. This means that at creation time, gnucash doesn't 
know any of the strings that will later make up this menu; instead, gnucash 
only uses the macros from gnome-app-helper. Opposed to that, during the 
addition of the menu extensions (gnc-menu-extensions.c) the menus are 
addressed through various strings (e.g. "Edit/_Preferences...") -- even 
though gnucash didn't know the strings in the first place! The strings that 
we use in the gnc-menu-extensions code are not more than rough guesses. And 
that's why IMHO they only work in those locales where the developers have 
"guessed right", namely the C locale and its closest relatives. For example, 
it's unclear at which points the gnome-app code needs the menu item names 
translated, or not translated, or with underscore, or without. In locales 
where the item translations (provided by gnucash's po file) happens to match 
with the system-wide Gnome translation of that menu item, things seem to work 
fine -- but e.g. in fr_FR, the system-wide translation of "_Edit" is 
different from the translation in gnucash's po file, and IMHO that's why the 
insertion in these places fails.

I think the only real locale-independent solution is that gnc-menu-extensions 
switches its menu "addressing"/lookup to use only the gnome-app macros for 
those menus that have been created though the macros. More comments?

Christian
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