set_field omits trailing dots from a literal string with digits

[netsensei]

e.g.

catmandu convert Null to YAML --fix "set_field('foo', '1234.')" will yield:

---
foo: 1234
...

These values do work correctly:

• .1234.
• d1234.
• 1234.d
• 1234d.

When converting to JSON we get this result:

catmandu convert Null to JSON --fix "set_field('foo', '1234.')" will yield:

[{"foo":1234.0}]

Note how 1234. is converted to 1234.0

Escaping the dot doesn't work:

catmandu convert Null to JSON --fix "set_field('foo', '1234\.')" will yield:

[{"foo":1234\\.}]

[nics]

fixed in 1.2009