Incorrect parsing of constants in compilemodule.py::expression_to_code_fragments

[Marco Morandini]

An simple expression like

e = Expression(".5")

is not compiled correctly, see the attached test case.

[Jan Blechta]

Correctly parse constants, fix #636

Use the regular expression from the Python library reference manual to parse floating poin numbers

→ <<cset d9300ee7ec30>>

[Jan Blechta]

Not yet in master.

[Jan Blechta]

b0b70f0

[Johannes Ring]

Issue #653 was marked as a duplicate of this issue.

[Anders Logg (Chalmers)]

Removing milestone: 1.7 (automated comment)