possible `%g` minor non-compliance

[ledvinap]

There is minor problem with %g specifier:

from https://www.gnu.org/software/libc/manual/html_node/Floating_002dPoint-Conversions.html#Floating_002dPoint-Conversions

The ‘%g’ and ‘%G’ conversions print the argument in the style of ‘%e’ or ‘%E’ (respectively) if the exponent would be less than -4 or greater than or equal to the precision; otherwise they use the ‘%f’ style. A precision of 0, is taken as 1. Trailing zeros are removed from the fractional portion of the result and a decimal-point character appears only if it is followed by a digit.

printf("%0-15.3g", -42.); :

"-42.0          "

glibc printf:

"-42            "

It seems to me that %g should use shortest representation, precision is only upper limit, # modifier may be used if decimal point is requested (unimplemented now) (https://stackoverflow.com/questions/30658919/the-precision-of-printf-with-specifier-g)

[eyalroz]

See also issue #75.

Seems to be resolved by commit 84e66ae32e6225e1d9510f3b130337bd7607ea5b on my fork.