Although working - the fix to bug #113 contains partly ineffective code starting at line #875 of dmd161's "src\phobos\std\format.d".

It might be worthwhile to consider re-using original code to fix bug #113. This would more in line with subsequent code found in the std.format module:


-----------

##### Original - starting at line # 866 (as of dmd 161):

if (vnumber < base)
{
  if (vnumber == 0 && precision == 0 && flags & FLprecision &&
    !(fc == 'o' && flags & FLhash))
  {
    putstr(null);
    return;
  }
  if (precision == 0 || !(flags & FLprecision))
  { vchar = '0' + vnumber;
    if (vnumber < 10)
      vchar = '0' + vnumber;
    else
      vchar = (uc ? 'A' - 10 : 'a' - 10) + vnumber;
    goto L2;
  }
}

int n = tmpbuf.length;
char c;
int hexoffset = uc ? ('A' - ('9' + 1)) : ('a' - ('9' + 1));

-----------

##### Proposed changes:

int hexoffset = uc ? ('A' - ('9' + 1)) : ('a' - ('9' + 1));

if (vnumber < base)
{
  if (vnumber == 0 && precision == 0 && flags & FLprecision &&
    !(fc == 'o' && flags & FLhash))
  {
    putstr(null);
    return;
  }
  if (precision == 0 || !(flags & FLprecision))
  {
    vchar = '0' + vnumber;
    if (vnumber > 9)
      vchar += hexoffset;
    goto L2;
  }
}

int n = tmpbuf.length;
char c;

-----------

Note: The line containing "int hexoffset = ..." needs to be moved up to line 866, then hexoffset can be used the same way as it is done already in subsequent parts of the module's code.