Addressed bug #2310 and replaced anomaly "unknown meta" raised by "refine"

by a regular error in v8.3.
Example behaves better in trunk thanks to new proof engine. In fact,
there are two distinct solutions to a unification problem: should
"refine" commit to one of them or leave the problem open? For trunk,
improved the unification error message by enforcing nf_evar (but at
some time, nf_evar in error messages should move to himsg because it
is costly when errors are used for backtracking).

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13127 85f007b7-540e-0410-9357-904b9bb8a0f7

0 files changed, 0 insertions, 0 deletions