Gettext literal #3
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lanurmi
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Point translation macros to wrapper functions that only accept
string literals. This is a backward-incompatible change,
though most incompatibilities found are likely to be bugs.
While at present the arguments do not technically need to be string
literals, variables can easily introduce subtle bugs that are not
obvious to spot. The fact that xgettext only picks string literals
is easy to forget.
Consider the following code:
wxString itm("item");
_(itm);
wxGETTEXT_IN_CONTEXT("context_1", itm);
wxGETTEXT_IN_CONTEXT(itm, "item");
wxPLURAL(wxString::Format("%s", "singX"), "plurX", 1);
wxPLURAL("singY", wxString::Format("%s", "plurY"), 2);
wxGETTEXT_IN_CONTEXT_PLURAL("context_1", _("singZ"), "plurZ", 1);
All of these lines compile without warnings. However, only one string,
"singZ", is picked by xgettext, all others are silently ignored. Some
lines would work if accompanied by a proper wxTRANSLATE* call, but nested
calls (see the last line) to translation macros do not make sense in the
first place.
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