The scan man page states that scan functions "...  in a fashion similar to the ANSI C sscanf procedure ...", with a few explicitly identified exceptions. 
With this in mind, I conclude that the scan is functioning as designed, matching C's sscanf behavior as shown in these results:


```
usage: ./cscan <string-value> <format-string> <value-type:(i|b|d|f|c)>
Uninitialized variables have value of -777, -7.77, or "BAAD"

sscanf("0o110", "%o%s", &i, &remainder) -> returned 2, results i=0 remainder="o110"
 scan  "0o110"  "%o%s"  i    remainder  -> returned 2, results i=0 remainder="o110"
sscanf("0d110", "%d%s", &i, &remainder) -> returned 2, results i=0 remainder="d110"
 scan  "0d110"  "%d%s"  i    remainder  -> returned 2, results i=0 remainder="d110"
sscanf("0x110", "%x%s", &i, &remainder) -> returned 1, results i=272 remainder="BAAD"
 scan  "0x110"  "%x%s"  i    remainder  -> returned 1, results i=272 remainder="BAAD"
sscanf("0b110", "%b%s", &i, &remainder) -> returned 0, results i=-777 remainder="BAAD"
 scan  "0b110"  "%b%s"  i    remainder  -> returned 1, results i=6 remainder="BAAD"
sscanf("true", "%b%s", &i, &remainder) -> returned 0, results i=-777 remainder="BAAD"
 scan  "true"  "%b%s"  i    remainder  -> returned 0, results i=-777 remainder="BAAD"
sscanf("0", "%b%s", &i, &remainder) -> returned 0, results i=-777 remainder="BAAD"
 scan  "0"  "%b%s"  i    remainder  -> returned 1, results i=0 remainder="BAAD"
sscanf("0110", "%o%s", &i, &remainder) -> returned 1, results i=72 remainder="BAAD"
 scan  "0110"  "%o%s"  i    remainder  -> returned 1, results i=72 remainder="BAAD"
sscanf("110", "%o%s", &i, &remainder) -> returned 1, results i=72 remainder="BAAD"
 scan  "110"  "%o%s"  i    remainder  -> returned 1, results i=72 remainder="BAAD"
sscanf("110", "%i%s", &i, &remainder) -> returned 1, results i=110 remainder="BAAD"
 scan  "110"  "%i%s"  i    remainder  -> returned 1, results i=110 remainder="BAAD"
sscanf("110.3ms", "%lg%s", &d, &remainder) -> returned 2, results d=110.300000 remainder="ms"
 scan  "110.3ms"  "%lg%s"  d    remainder  -> returned 2, results d=110.3 remainder="ms"
sscanf("0d10", "%x%s", &i, &remainder) -> returned 1, results i=3344 remainder="BAAD"
 scan  "0d10"  "%x%s"  i    remainder  -> returned 1, results i=3344 remainder="BAAD"
sscanf("0b10", "%x%s", &i, &remainder) -> returned 1, results i=2832 remainder="BAAD"
 scan  "0b10"  "%x%s"  i    remainder  -> returned 1, results i=2832 remainder="BAAD"
sscanf("0x10", "%x%s", &i, &remainder) -> returned 1, results i=16 remainder="BAAD"
 scan  "0x10"  "%x%s"  i    remainder  -> returned 1, results i=16 remainder="BAAD"

```

See the attached files to reproduce these results.

I am closing this as "wont fixed", works as intended.