On 03/14/2015 05:01 PM, Matěj Týč wrote: > Hello again, > In my m4 project where I use autom4te and m4sugar (for those who are > curious - https://github.com/matejak/d8 ), > in order to be able to output anything, one has to call > m4_divert_push(1) (or something similar) at certain point. However, > every time I do that, I get the > warning: prefer named diversions > warning. I know that I can use m4_divert_push(KILL) in place of > m4_divert_push(0), but a trivial diversion e.g. for stdout is not > available (or documented). There is also a lack of documentation on how > to register a named diversion, using a macro instead of a number isn't > the right way how to make a named diversion. > Do you have any solution to this in mind? Telling autom4te to suppress > warnings doesn't feel right. According to the manual, m4sugar defines KILL and GROW as named diversions; m4sh (if you use AS_INIT instead of m4_init) also adds BINSH, several HEADER-*, M4SH-SANITIZE, M4SH-INIT, and BODY. That is, if you are using autom4te to generate a shell script, then you eventually want to m4_divert_push([BODY]) (although you get it free by using AS_INIT). As for creating new named diversions, they are not documented in the manual, but you can learn about them in the m4sugar source code (basically, m4_define([_m4_divert(NAME)], NUMBER) will define m4_divert_push(NAME) to use that diversion number). -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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