lupdate -tr-function-alias works for tr+= but not translate+=

I've made a #define Q_TR(text) that calls QCoreApplication::translate(FIXED_CONTEXT, text)

I called `lupdate file.cpp -ts trans.fr.ts -tr-function-alias tr+=Q_TR`

and it works, although complaining that my class lacks Q_OBJECT.

But when I call `lupdate file.cpp -ts trans.fr.ts -tr-function-alias translate+=Q_TR` it does not see the source texts at all.

eg:

#define Q_TR_CONTEXT "something"

#define Q_TR_C(context,mesg) QCoreApplication::translate(context,mesg)

#define Q_TR(mesg) Q_TR_C(Q_TR_CONTEXT,mesg)

...

display_text( Q_TR("press me") );