Fail to recognize keys ending with :

[Tux]

$ cat  /tmp/Test-Database-merijn/CSV/mapping.yml

---
dbi:CSV::
   /pro/3gl/CPAN/DBI-Test-git/sandbox/tim: tdd_csv_merijn_0
$

PASSs with YAML, YAML::XS, and YAML::Syck, but FAILs with YAML::Tiny

YAML::Tiny failed to classify line 'dbi:CSV::' at …

If I dig, I come to the conclusion that this line is too restrictive:

my $re_capture_unquoted_key  = qr/([^:]+(?::+\S[^:]*)*)(?=\s*\:(?:\s+|$))/;

if I change that to

my $re_capture_unquoted_key  = qr/([^:]+(?::+\S(?:[^:]*|.*?(?=:)))*)(?=\s*\:(?:\s+|$))/;

YAML::Tiny also passes and its test suite also still passes, but I am by far a YAML expert and leave that conclusion to the experts