[yocto] BB_DANGLINGAPPENDS_WARNONLY = "1" or "true"?

[Robert P. J. Day]

  (i can see it's going to be that kind of weekend.) ref manual reads:

     BB_DANGLINGAPPENDS_WARNONLY = "1"

but some layers define:

meta-linaro/meta-aarch64/conf/layer.conf:BB_DANGLINGAPPENDS_WARNONLY = "true"
meta-linaro/meta-linaro-toolchain/conf/layer.conf:BB_DANGLINGAPPENDS_WARNONLY = "true"
meta-linaro/meta-linaro/conf/layer.conf:BB_DANGLINGAPPENDS_WARNONLY = "true"
poky-extras/meta-kernel-dev/conf/layer.conf:BB_DANGLINGAPPENDS_WARNONLY ?= "true"

so general question(s) -- is it understood that "1" and "true" are
equivalent? should there be a standard? should the ref manual be
enhanced, or should the above layers clean themselves up?

rday

-- 

========================================================================
Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
========================================================================