Newly defined units unavailable to u_str

[ggggggggg]

Following the docs I tried:

julia> using Unitful

julia> @unit M "M" Molar 1u"mol/L" true
M

julia> 1M
1 M

julia> 1u"M"
ERROR: Symbol M could not be found in registered unit modules.

edit: Expected behavior is that 1M==1u"M"

[ajkeller34]

I wouldn't expect this to work, since Main isn't a registered unit module by default. On the other hand, it appears like it was not possible before to even register Main as a unit module. I've patched master, it should work for you now provided you do Unitful.register(Main) before using @u_str, like:

julia> using Unitful
INFO: Recompiling stale cache file /Users/ajkeller/.julia/lib/v0.6/Unitful.ji for module Unitful.

julia> Unitful.register(Main)
2-element Array{Module,1}:
 Unitful
 Main   

julia> @unit M "M" Molar 1u"mol/L" true
M

julia> 1M
1 M

julia> 1u"M"
1 M