2013/6/14 Peter Bex <peter....@xs4all.nl> > On Fri, Jun 14, 2013 at 10:30:28PM +0800, Xin Wang wrote: > > Hi, > > > > I encountered a problem that previously defined macro can not be used > > inside other macro defination. > > > > It seems that newly defined syntax does not available in macro expansion > > environment, is it intended? > > That's correct; this problem is known as "phasing"; macros are defined in > their own compilation phase. Each phase can only see macros defined in > earlier phases. > > To define a macro for the macro environment, you can wrap it in a > begin-for-syntax block, or put it inside its own module and then > use import-for-syntax to import it in the module that uses it. > > Thanks, it works.
> Cheers, > Peter > -- > http://www.more-magic.net >
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