meld-3.13.1 was released on 20 Apr 2015. Please, update portage. Reproducible: Always
Most gnome projects use odd minor version numbers (like 3.13.x) for development releases not meant for wide public use, and even versions (3.12.x) for stable. I am not sure whether meld follows that pattern.
http://meldmerge.org/ -> Meld follows the same, look at "Getting it" section, it's a development version then
Upstream says that 3.13.1 is a development version, but they recommend it for general use over 3.12.x. So let's bump it. +*meld-3.13.1 (12 Jun 2015) + + 12 Jun 2015; Alexandre Rostovtsev <tetromino@gentoo.org> -meld-3.12.2.ebuild, + meld-3.12.3.ebuild, +meld-3.13.1.ebuild: + Version bump (bug #551824, thanks to José Romildo Malaquias). Drop old.