id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
10193,[Spirit.qi] real_parser is too strict with the exponent part,anonymous,Joel de Guzman,"E.g. parsing  ""4em"" string fails with 
{{{
double_ >> lit(""em"")
}}}

""e"" is considered start of exponent part and integer is expected after it.

Exponent handling as described in documentation as follows:
{{{
exponent_part
    =   (lit('e') | 'E') >> -sign >> +digit
    ;
}}}

But as it is implemented now, grammar should be:
{{{
exponent_part
    =   (lit('e') | 'E') > -sign > +digit
    ;
}}}

It will be better if ""e"" is treated as exponent part only if it is followed by integer (with optional sign).",Bugs,closed,To Be Determined,spirit,Boost 1.55.0,Problem,fixed,,