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util.openmetrics: Prettify format of histogram buckets "%g" turns 1GB into 1.07374e+09, which is a bit awkward for the bytes measurements IMO. Turning up the precision, at "%.17g" turns 0.1 into 0.10000000000000001 while "%0.16" gives 0.1, hiding most of those pesky floating point artefacts. Lua version 5.2 uses "%.14g" ( see LUA_NUMBER_FMT in luaconf.h.html ) so it seems like a sensible choice here.

local record lib
	urlencode : function (s : string) : string 
	urldecode : function (s : string) : string 
	formencode : function (f : { string : string }) : string 
	formdecode : function (s : string) : { string : string } 
	contains_token : function (field : string, token : string) : boolean 
	normalize_path : function (path : string) : string 
end
return lib